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1,669 results on '"GRAWE, H."'

203. Ultrafast-timing lifetime measurements in Ru-94 and Pd-96 : Breakdown of the seniority scheme in N=50 isotones

Author

Mach, H., Korgul, A., Gorska, M., Grawe, H., Matea, I., Stanoiu, M., Fraile, L. M., Penionzkevich, Yu. E., Santos, F. De Oliviera, Verney, D., Lukyanov, S., Cederwall, B, Covello, A., Dlouhy, Z., Fogelberg, B., De France, G., Gargano, A., Georgiev, G., Grzywacz, R., Lisetskiy, A. F., Mrazek, J., Nowacki, F., Plociennik, W. A., Podolyak, Zs., Ray, S., Ruchowska, E., Saint-Laurent, M. -G, Sawicka, M., Stodel, Ch., Tarasov, O., Mach, H., Korgul, A., Gorska, M., Grawe, H., Matea, I., Stanoiu, M., Fraile, L. M., Penionzkevich, Yu. E., Santos, F. De Oliviera, Verney, D., Lukyanov, S., Cederwall, B, Covello, A., Dlouhy, Z., Fogelberg, B., De France, G., Gargano, A., Georgiev, G., Grzywacz, R., Lisetskiy, A. F., Mrazek, J., Nowacki, F., Plociennik, W. A., Podolyak, Zs., Ray, S., Ruchowska, E., Saint-Laurent, M. -G, Sawicka, M., Stodel, Ch., and Tarasov, O.

Abstract

The advanced time-delayed gamma gamma(t) method has been applied to determine half-lives of low-lying states in the N = 50 isotones Ru-94 and Pd-96. The inferred experimental E2 strengths for the 4(+) -> 2(+) transitions in the two nuclei show a dramatic deviation with respect to the shell model predictions in the (f(5/2), p, g(9/2)) proton hole space in Sn-100. The anomalous behavior can be ascribed to a breakdown of the seniority quantum number in the pi g(9/2)(n) configuration due to particle-hole excitations across the N = Z = 50 shell as confirmed by large-scale shell model calculations., QC 20170222

Published
2017
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204. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Bäck, Torbjörn, Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Bäck, Torbjörn, Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state., QC 20170522

Published
2017
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205. Observation of a gamma-decaying millisecond isomeric state in Cd-128(80)

Author

Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Wendt, A., Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., and Wendt, A.

Abstract

A new high-spin isomer in the neutron-rich nucleus Cd-128 was populated in the projectile fission of a U-238 beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T-1/2 = 6.3(8) mswas measured for the new state which was tentatively assigned a spin/parity of (15(-)). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus Cd-129. In the present experiment no evidence was found for the decay of a 18(+) E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h(11/2) and the 0g(9/2) orbit, respectively, which is predicted to exist by the shell model. (C) 2017 The Author(s). Published by Elsevier B.V.

Published
2017

206. Properties of gamma-decaying isomers and isomeric ratios in the Sn-100 region

Author

Park, J., Krucken, R., Lubos, D., Gernhaeuser, R., Lewitowicz, M., Nishimura, S., Ahn, D. S., Baba, H., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Celikovic, I., de France, G., Doornenbal, P., Faestermann, T., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Gorska, M., Grawe, H., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M. M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L., Soderstrom, P. -A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Wang, Z., Watanabe, H., Wu, J., Xu, Z. Y., Park, J., Krucken, R., Lubos, D., Gernhaeuser, R., Lewitowicz, M., Nishimura, S., Ahn, D. S., Baba, H., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Celikovic, I., de France, G., Doornenbal, P., Faestermann, T., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Gorska, M., Grawe, H., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M. M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L., Soderstrom, P. -A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Wang, Z., Watanabe, H., Wu, J., and Xu, Z. Y.

Abstract

Half-lives and energies of gamma rays emitted in the decay of isomeric states of nuclei in the vicinity of the doubly magic Sn-100 weremeasured in a decay spectroscopy experiment at RikagakuKenkyusho (The Institute of Physical and Chemical Research) of Japan Nishina Center. The measured half-lives, some with improved precision, are consistent with literature values. Three new results include a 55-keV E2 gamma ray from a new (4(+)) isomer with T-1/2 = 0.23(6) mu s in Rh-92, a 44-keV E2 gamma ray from the (15(+)) isomer in Ag-96, and T-1/2(6(+)) = 13(2) ns in Cd-98. Shell-model calculations of electromagnetic transition strengths in the (p(1/2), g(9/2)) model space agree with the experimental results. In addition, experimental isomeric ratios were compared to the theoretical predictions derived with an abrasion-ablation model and the sharp cutoff model. The results agreed within a factor of 2 for most isomers. From the nonobservation of time-delayed gamma rays in Sn-100, new constraints on the T-1/2, gamma-ray energy, and internal conversion coefficients are proposed for the hypothetical isomer in Sn-100.

Published
2017

207. Hindered E4 decay of the 12+ yrast trap in 52Fe

Author

Gadea, A., Lenzi, S.M., Napoli, D.R., Axiotis, M., Ur, C.A., Martínez-Pinedo, G., Górska, M., Roeckl, E., Caurier, E., Nowacki, F., de Angelis, G., Batist, L., Borcea, R., Brandolini, F., Cano-Ott, D., Döring, J., Fahlander, C., Farnea, E., Grawe, H., Hellström, M., Janas, Z., Kirchner, R., La Commara, M., Mazzocchi, C., Nácher, E., Plettner, C., Płochocki, A., Rubio, B., Schmidt, K., Schwengner, R., Tain, J.L., and Żylicz, J.

Subjects
Nuclear and High Energy Physics
Published
2005
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208. Superdeformation in194Pb

Author

Theine, K., Hannachi, F., Willsau, P., Hübel, H., Mehta, D., Schmitz, W., Yang, C. X., Fossan, D. B., Grawe, H., Kluge, H., and Maier, K. H.

Published
1990
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209. STRUCTURE OF Pb-207 POPULATED IN Pb-208+Pb-208 DEEP-INELASTIC COLLISIONS

Author

Shand, CM, Wilson, E, Podolyak, Z, Grawe, H, Brown, BA, Fornal, B, Janssens, RVF, Bowry, M, Bunce, M, Carpenter, MP, Carroll, RJ, Chiara, CJ, Cieplicka-Orynczak, N, Deo, AY, Dracoulis, GD, Hoffman, CR, Kempley, RS, Kondev, FG, Lane, GJ, Lauritsen, T, Lotay, G, Reed, MW, Regan, PH, Rodriguez-Triguero, C, Seweryniak, D, Szpak, B, Walker, PM, and Zhu, S

Subjects
TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY
Abstract

The yrast structure of 207Pb above the 13=2+ isomeric state has been investigated in deep-inelastic collisions of 208Pb and 208Pb at ATLAS, Argonne National Laboratory. New and previously observed transitions were measured using the Gammasphere detector array. The level scheme of 207Pb is presented up to ∼ 6 MeV, built using coincidence and γ-ray intensity analyses. Spin and parity assignments of states were made, based on angular distributions and comparisons to shell model calculations.

Published
2015

210. Octupole transitions in the Pb-208 region

Author

Podolyak, Z, Shand, CM, Wilson, E, Brown, BA, Grawe, H, Chiara, CJ, Zhu, S, Fornal, B, Janssens, RVF, Bowry, M, Bunce, M, Carpenter, MP, Cieplicka, N, Deo, AY, Dracoulis, GD, Hoffman, CR, Kempley, RS, Kondev, FG, Lane, GJ, Lauritsen, T, Lotay, G, Reed, MW, Regan, PH, Triguero, CR, Seweryniak, D, Szpak, B, Walker, PM, Gargano, A, Coraggio, L, and Itaco, N

Published
2015

211. Study of ground and excited state decays in N approximate to Z Ag nuclei

Author

Moschner, K., Blazhev, A., Warr, N., Boutachkov, P., Davies, P., Wadsworth, R., Ameil, F., Baba, H., Bäck, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Go, S., Górska, M., Grawe, H., Gregor, E., Hotaka, H., Isobe, T., Jenkins, G.D., Jolie, J., Jung, H.S., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Pietralla, N., Schaffner, H., Söderström, P.-A., Steiger, K., Sumikama, T., Taprogge, J., Thöle, P., Watanabe, H., Werner, V., Xu, Z.Y., Yagi, A., Yoshinaga, K., Zhu, Y., RIKEN Nishina Center for Accelerator-Based Science, University of Tokyo, Federal Ministry of Education and Research (Germany), and Department of Energy (US)

Abstract

4 pags., 4 figs. -- CGS15 – Capture Gamma-Ray Spectroscopy and Related Topics, A decay spectroscopy experiment was performed within the EURICA campaign at RIKEN in 2012. It aimed at the isomer and particle spectroscopy of excited states and ground states in the mass region below the doubly magic 100Sn. The N = Z nuclei 98In, 96Cd and 94Ag were of particular interest for the present study. Preliminary results on the neutron deficient nuclei 93Ag and 94Ag are presented. In 94Ag a more precise value for the half-life of the ground state’s superallowed Fermi transition was deduced. In addition the energy spectra of the mentioned decay could be reproduced through precise Geant4 simulations of the used active stopper SIMBA. This will enable us to extract Qβ values from the measured data. The decay of 93Ag is discussed based on the observed implantation-decay correlation events., This work was carried out at the RIBF operated by RIKEN Nishina Center, RIKEN and CNS, University of Tokyo. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. This work was supported by the German BMBF under Contract No. 05P12PKFNE and by the U.S. Department of Energy under grant No. DE-FG02-91ER-40609.

Published
2015

212. Octupole transitions in the 208Pb region

Author

Hoffman, C.R., Fornal, B., Deo, A.Y., Shand, C.M., Regan, P.H., Reed, M.W., Podolyák, Z., Brown, B.A., Kondev, F.G., Cieplicka, N., Chiara, C.J., Seweryniak, D., Carpenter, M.P., Bowry, M., Lotay, G., Lauritsen, T., Wilson, E., Walker, P.M., Lane, G.J., Szpak, B., Kempley, R.S., Dracoulis, G.D., Janssens, R.V.F., Bunce, M., Zhu, S., Triguero, C.R., and Grawe, H.

Abstract

The 208Pb region is characterised by the existence of collective octupole states. Here we populated such states in 208Pb + 208Pb deep-inelastic reactions. γ-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17- 14+ in 208Pb, 2485 keV 19/2- 13/2+ in 207Pb, 2419 keV 15/2- 9/2+ in 209Pb and 2465 keV 17/2+ 11/2- in 207Tl transitions was demonstrated for the first time. In addition, shell model calculations were performed using two different sets of two-body matrix elements. Their predictions were compared with emphasis on collective octupole states.

Published
2015
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213. β decay of $^{129}$Cd and excited states in $^{129}$In

Author

Taprogge, J., Jungclaus, A., Baba, H., Browne, F., Fukuda, N., Gernhäuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Grawe, H., Kim, Y.-K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Nishimura, S., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Doornenbal, P., Covello, A., Daugas, J.-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Lorusso, G., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyák, Zs., Wendt, A., Simpson, G. S., RIKEN, EUROBALL, PreSpec Collaboration, Söderström, P.-A., Sumikama, T., and Xu, Z. Y.

Subjects
ddc:530
Published
2015
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214. [Beta] decay of 129Cd and excited states in 129In

Author

Taprogge, Jan, Jungclaus, A., Grawe, H., Nishimura, Shunji, Doornenbal, Pieter, Lorusso, Giuseppe, Simpson, G. S., Söderström, Pär-Anders, Sumikama, Toshiyuki, Xu, Z. Y., Baba, H., Browne, Frank, Fukuda, Naoki, Gernhäuser, R., Gey, Guillaume, Inabe, Naohiro, Isobe, Tadaaki, Jung, H. S., Kameda, Daisuke, Kim, G. D., Kim, Y.-K., Kojouharov, I., Kubo, Toshiyuki, Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, Hiroshi, Takeda, Hiroyuki, Vajta, Zsolt, Watanabe, Hiroshi, Wu, J., Yagi, Ayumi, Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Covello, A., Daugas, J.-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, Hiroki, Odahara, Atsuko, Orlandi, R., Patel, Zena, Podolyák, Zs., and Wendt, A.

Subjects
Természettudományok, Fizikai tudományok
Published
2015

215. Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar-33

Author

Wendt, A, Taprogge, J, Reiter, P, Golubev, P, Grawe, H, Pietri, S, Boutachkov, P, Algora, A, Ameil, F, Bentley, MA, Blazhev, A, Bloor, D, Bondili, NS, Bowry, M, Bracco, A, Braun, N, Camera, F, Cederkall, J, Crespi, F, de la Salle, A, DiJulio, D, Doornenbal, P, Geibel, K, Gellanki, J, Gerl, J, Grebosz, J, Guastalla, G, Habermann, T, Hackstein, M, Hoischen, R, Jungclaus, A, Merchan, E, Million, B, Morales, A, Moschner, K, Podolyak, Z, Pietralla, N, Ralet, D, Reese, M, Rudolph, D, Scruton, L, Siebeck, B, Warr, N, Wieland, O, and Wollersheim, HJ

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (Tz = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way

Published
2014

216. A decay spectroscopy experiment was performed within the EURICA campaign at RIKEN in 2012.It aimed at the isomer and particle spectroscopy of excited states and ground states in the mass region belowthe doubly magic 100Sn. The N = Z nuclei 98In, 96Cd and 94Ag were of particular interest for the present study.Preliminary results on the neutron deficient nuclei 93Ag and 94Ag are presented. In 94Ag a more precise valuefor the half-life of the ground state’s superallowed Fermi transition was deduced. In addition the energy spectraof the mentioned decay could be reproduced through precise Geant4 simulations of the used active stopperSIMBA. This will enable us to extract Qβ values from the measured data. The decay of 93Ag is discussed basedon the observed implantation-decay correlation events

Author

Moschner, K., Blazhev, A., Boutachkov, P., Davies, P., Wadsworth, R., Ameil, F., Baba, H., Bäck, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeuser, R., Go, S., Górska, M., Grawe, H., Gregor, E., Hotaka, H., Isobe, T., Jenkins, D. G., Jolie, J., Jung, H. S., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Pietralla, N., Schaffner, H., Söderström, P.-A., Steiger, K., Sumikama, T., Taprogge, J., Thöle, P., Warr, N., Watanabe, H., Werner, V., Xu, Z., Yagi, A., Yoshinaga, K., Zhu, Y., Grand Accélérateur National d'Ions Lourds (GANIL), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

This an Open Access article distributed under the terms of the Creative Commons Attribution Licence 4.0; International audience

Published
2014
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218. 1p3/2 proton-hole state in Sn 132 and the shell structure along N=82

Author

Taprogge, J., Jungclaus, Andrea, Grawe, H., Nishimura, S., Gadea, Andrés, Montaner-Pizá, A., Podolyák, Zs., and Wendt, A.

Abstract

5 pags. ; 3 figs. ; PACS numbers: 23.40.-s, 21.10.Pc, 27.60.+j, 21.60.Cs ; Taprogge, J., et al., A low-lying state in In82131, the one-proton hole nucleus with respect to double magic Sn132, was observed by its γ decay to the Iπ=1/2- β-emitting isomer. We identify the new state at an excitation energy of Ex=1353keV, which was populated both in the β decay of Cd13183 and after β-delayed neutron emission from Cd13284, as the previously unknown πp3/2 single-hole state with respect to the Sn132 core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below Sn132. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed. © 2014 American Physical Society., This work was supported by the Spanish Ministerio de Ciencia e Innovación under Contracts No. FPA2009-13377-C02 and No. FPA2011-29854-C04, the Generalitat Valenciana (Spain) under grant PROMETEO/2010/101, the Japanese government under contract KAKENHI (25247045), the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. NRF- 2012R1A1A1041763), the Priority Centers Research Program in Korea (2009-0093817), OTKA contract number K-100835, the European Commission through the Marie Curie Actions call FP7-PEOPLE-2011-IEF under Contract No. 300096, the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02- 06CH11357 and the German BMBF (No. 05P12RDCIA and 05P12RDNUP) and HIC for FAIR.

Published
2014

219. Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion

Author

Ferrer, R., primary, Barzakh, A., additional, Bastin, B., additional, Beerwerth, R., additional, Block, M., additional, Creemers, P., additional, Grawe, H., additional, de Groote, R., additional, Delahaye, P., additional, Fléchard, X., additional, Franchoo, S., additional, Fritzsche, S., additional, Gaffney, L. P., additional, Ghys, L., additional, Gins, W., additional, Granados, C., additional, Heinke, R., additional, Hijazi, L., additional, Huyse, M., additional, Kron, T., additional, Kudryavtsev, Yu., additional, Laatiaoui, M., additional, Lecesne, N., additional, Loiselet, M., additional, Lutton, F., additional, Moore, I. D., additional, Martínez, Y., additional, Mogilevskiy, E., additional, Naubereit, P., additional, Piot, J., additional, Raeder, S., additional, Rothe, S., additional, Savajols, H., additional, Sels, S., additional, Sonnenschein, V., additional, Thomas, J-C, additional, Traykov, E., additional, Van Beveren, C., additional, Van den Bergh, P., additional, Van Duppen, P., additional, Wendt, K., additional, and Zadvornaya, A., additional

Published
2017
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220. Ultrafast-timing lifetime measurements in Ru94 and Pd96 : Breakdown of the seniority scheme in N=50 isotones

Author

Mach, H., primary, Korgul, A., additional, Górska, M., additional, Grawe, H., additional, Matea, I., additional, Stănoiu, M., additional, Fraile, L. M., additional, Penionzkevich, Yu. E., additional, Santos, F. De Oliviera, additional, Verney, D., additional, Lukyanov, S., additional, Cederwall, B., additional, Covello, A., additional, Dlouhý, Z., additional, Fogelberg, B., additional, De France, G., additional, Gargano, A., additional, Georgiev, G., additional, Grzywacz, R., additional, Lisetskiy, A. F., additional, Mrazek, J., additional, Nowacki, F., additional, Płóciennik, W. A., additional, Podolyák, Zs., additional, Ray, S., additional, Ruchowska, E., additional, Saint-Laurent, M.-G., additional, Sawicka, M., additional, Stodel, Ch., additional, and Tarasov, O., additional

Published
2017
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221. First observation of gamma rays emitted from excited states south-east of Sn-132: The pi g(9/2)(-1) circle times nu f(7/2) multiplet of In-132(83)

Author

Jungclaus, A., Gargano, A., Grawe, H., Taprogge, J., Nishimura, S., Doornenbal, P., Lorusso, G., Shimizu, Y., Simpson, G. S., Soederstroem, P. -A., Sumikama, T., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Boenig, S., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Ilieva, S., Itaco, N., Kroell, T., Montaner-Piza, A., Moschner, K., Muecher, D., Nishibata, H., Odahara, A., Orlandi, R., Wendt, A., Jungclaus, A., Gargano, A., Grawe, H., Taprogge, J., Nishimura, S., Doornenbal, P., Lorusso, G., Shimizu, Y., Simpson, G. S., Soederstroem, P. -A., Sumikama, T., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Boenig, S., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Ilieva, S., Itaco, N., Kroell, T., Montaner-Piza, A., Moschner, K., Muecher, D., Nishibata, H., Odahara, A., Orlandi, R., and Wendt, A.

Abstract

For the first time, the gamma decay of excited states has been observed in a nucleus situated in the quadrant south-east of doubly magic Sn-132, a region in which experimental information so far is limited to ground-state properties. Six gamma rays with energies of 50, 86, 103, 227, 357, and 602 keV were observed following the beta-delayed neutron emission from Cd-133(85), populated in the projectile fission of a U-238 beam at the Radioactive Isotope Beam Factory at RIKEN within the EURICA project. The new experimental information is compared to the results of a modern realistic shell-model calculation, the first one in this region very far from stability, focusing in particular on the pi 0g(9/2)(-1) circle times nu 1f(7/2) particle-hole multiplet in In-132(83). In addition, theoretical estimates based on a scaling of the two-body matrix elements for the pi h(11/2)(-1) circle times nu g(9/2) analog multiplet in Tl-208(127), one major proton and one major neutron shell above, are presented.

Published
2016

222. beta decay of semi-magic Cd-130: Revision and extension of the level scheme of In-130

Author

Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soederstroem, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Wendt, A., Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soederstroem, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., and Wendt, A.

Abstract

The beta decay of the semi-magic nucleus Cd-130 has been studied at the RIBF facility at the RIKEN Nishina Center. The high statistics of the present experiment allowed for a revision of the established level scheme of In-130 and the observation of additional beta feeding to high- lying core-excited states in In-130. The experimental results are compared to shell-model calculations employing a model space consisting of the full major N = 50-82 neutron and Z = 28-50 proton shells and the NA-14 interaction, and good agreement is found.

Published
2016

223. Proton-hole and core-excited states in the semi-magic nucleus In-131(82)

Author

Taprogge, J., Jungclaus, A., Grawe, H., Borzov, I. N., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Wendt, A., Taprogge, J., Jungclaus, A., Grawe, H., Borzov, I. N., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., and Wendt, A.

Abstract

The decay of the N = 83 nucleus Cd-131 has been studied at the RIBF facility at the RIKEN Nishina Center. The main purpose of the study was to identify the position of the and proton-hole states and the energies of core-excited configurations in the semi-magic nucleus In-131. From the radiation emitted following the decay, a level scheme of In-131 was established and the feeding to each excited state determined. Similarities between the single-particle transitions observed in the decays of the N = 83 isotones In-132 and Cd-131 are discussed. Finally the excitation energies of several core-excited configurations in In-131 are compared to QRPA and shell-model calculations.

Published
2016

224. Proton-hole and core-excited states in the semi-magic nucleus In-131(82) (vol 52, pg 347, 2016)

Author

Taprogge, J., Jungclaus, A., Grawe, H., Borzov, I. N., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soederstroem, P-A, Sumikama, T., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y-K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Wendt, A., Taprogge, J., Jungclaus, A., Grawe, H., Borzov, I. N., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soederstroem, P-A, Sumikama, T., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y-K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., and Wendt, A.

Published
2016

225. The 68mCu/68Cu isotope as a new probe for hyperfine studies:the nuclear moments

Author

Fenta, A. S., Pallada, Stavroula, Correia, J. G., Stachura, M., Johnston, K., Gottberg, A., Gerami, A. Mokhles, Röder, J., Grawe, H., Brown, B. A., Köster, U., Mendonça, T. M., Ramos, J. P., Marsh, B. A., Goodacre, T. Day, Amaral, V. S., Pereira, L. M. C., Borge, M. J. G., Haas, H., Fenta, A. S., Pallada, Stavroula, Correia, J. G., Stachura, M., Johnston, K., Gottberg, A., Gerami, A. Mokhles, Röder, J., Grawe, H., Brown, B. A., Köster, U., Mendonça, T. M., Ramos, J. P., Marsh, B. A., Goodacre, T. Day, Amaral, V. S., Pereira, L. M. C., Borge, M. J. G., and Haas, H.

Published
2016

226. The 68m Cu/ 68 Cu isotope as a new probe for hyperfine studies: The nuclear moments

Author

Fenta, A. S., primary, Pallada, S., additional, Correia, J. G., additional, Stachura, M., additional, Johnston, K., additional, Gottberg, A., additional, Mokhles Gerami, A., additional, Röder, J., additional, Grawe, H., additional, Brown, B. A., additional, Köster, U., additional, Mendonça, T. M., additional, Ramos, J. P., additional, Marsh, B. A., additional, Day Goodacre, T., additional, Amaral, V. S., additional, C. Pereira, L. M., additional, Borge, M. J. G., additional, and Haas, H., additional

Published
2016
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227. βdecay of semi-magicCd130: Revision and extension of the level scheme ofIn130

Author

Jungclaus, A., primary, Grawe, H., additional, Nishimura, S., additional, Doornenbal, P., additional, Lorusso, G., additional, Simpson, G. S., additional, Söderström, P.-A., additional, Sumikama, T., additional, Taprogge, J., additional, Xu, Z. Y., additional, Baba, H., additional, Browne, F., additional, Fukuda, N., additional, Gernhäuser, R., additional, Gey, G., additional, Inabe, N., additional, Isobe, T., additional, Jung, H. S., additional, Kameda, D., additional, Kim, G. D., additional, Kim, Y.-K., additional, Kojouharov, I., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y. K., additional, Li, Z., additional, Sakurai, H., additional, Schaffner, H., additional, Shimizu, Y., additional, Steiger, K., additional, Suzuki, H., additional, Takeda, H., additional, Vajta, Zs., additional, Watanabe, H., additional, Wu, J., additional, Yagi, A., additional, Yoshinaga, K., additional, Benzoni, G., additional, Bönig, S., additional, Chae, K. Y., additional, Coraggio, L., additional, Daugas, J.-M., additional, Drouet, F., additional, Gadea, A., additional, Gargano, A., additional, Ilieva, S., additional, Itaco, N., additional, Kondev, F. G., additional, Kröll, T., additional, Lane, G. J., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Mücher, D., additional, Naqvi, F., additional, Niikura, M., additional, Nishibata, H., additional, Odahara, A., additional, Orlandi, R., additional, Patel, Z., additional, Podolyák, Zs., additional, and Wendt, A., additional

Published
2016
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228. First observation ofγrays emitted from excited states south-east ofSn132: Theπg9/2−1⊗νf7/2multiplet ofIn83132

Author

Jungclaus, A., primary, Gargano, A., additional, Grawe, H., additional, Taprogge, J., additional, Nishimura, S., additional, Doornenbal, P., additional, Lorusso, G., additional, Shimizu, Y., additional, Simpson, G. S., additional, Söderström, P.-A., additional, Sumikama, T., additional, Xu, Z. Y., additional, Baba, H., additional, Browne, F., additional, Fukuda, N., additional, Gernhäuser, R., additional, Gey, G., additional, Inabe, N., additional, Isobe, T., additional, Jung, H. S., additional, Kameda, D., additional, Kim, G. D., additional, Kim, Y.-K., additional, Kojouharov, I., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y. K., additional, Li, Z., additional, Sakurai, H., additional, Schaffner, H., additional, Steiger, K., additional, Suzuki, H., additional, Takeda, H., additional, Vajta, Zs., additional, Watanabe, H., additional, Wu, J., additional, Yagi, A., additional, Yoshinaga, K., additional, Bönig, S., additional, Coraggio, L., additional, Daugas, J.-M., additional, Drouet, F., additional, Gadea, A., additional, Ilieva, S., additional, Itaco, N., additional, Kröll, T., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Mücher, D., additional, Nishibata, H., additional, Odahara, A., additional, Orlandi, R., additional, and Wendt, A., additional

Published
2016
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229. Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

Author

Wendt, A., Taprogge, J., Reiter, P., Golubev, Pavel, Grawe, H., Pietri, S., Boutachkov, P., Algora, A., Ameil, F., Bentley, M. A., Blazhev, A., Bloor, D., Bondili, N. S., Bowry, M., Bracco, A., Braun, N., Camera, F., Cederkäll, Joakim, Crespi, F., de la Salle, A., DiJulio, Douglas, Doornenbal, P., Geibel, K., Gellanki, Jnaneswari, Gerl, J., Grȩbosz, J., Guastalla, G., Habermann, T., Hackstein, M., Hoischen, R., Jungclaus, A., Merchán, E., Million, B., Morales, A., Moschner, K., Podolyák, Zs., Pietralla, N., Ralet, D., Reese, M., Rudolph, Dirk, Scruton, L., Siebeck, B., Warr, N., Wieland, O., and Wollersheim, H. J.

Subjects
isospin symmetry, gamma-ray spectroscopy, Nuclear Theory, Subatomic Physics, Nuclear Experiment, relativistic projectile fragmentation
Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (Tz = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

Published
2014

230. Identification of a millisecond isomeric state in 129Cd81via the detection of internal conversion and Compton electrons

Author

Taprogge, J., Jungclaus, A., Grawe, H., Nishimura, S., Xu, Z.Y., Doornenbal, P., Lorusso, G., Nácher, E., Simpson, G.S., Söderström, P.-A., Sumikama, T., Baba, H., Browne, F., Fukuda, N., Gernhäuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H.S., Kameda, D., Kim, G.D., Kim, Y.-K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y.K., Li, Zhenyu, Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Takeda, H., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K.Y., Coraggio, L., Covello, A., Daugas, J.-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F.G., Kröll, T., Lane, G.J., Montaner-Pizá, A., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyák, Zs., Wendt, A., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
Published
2014
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231. Study of (TI126)-T-207 Produced in Deep-Inelastic Reactions

Author

Wilson, E, Podolyak, Z, Fornal, B, Janssens, RVF, Bowry, M, Bunce, M, Carpenter, MP, Chiara, CJ, Cieplicka, N, Deo, AY, Dracoulis, GD, Grawe, H, Hoffman, CR, Kempley, RS, Kondev, FG, Lane, GJ, Lauritsen, T, Reed, MW, Regan, PH, Triguero, CR, Szpak, B, Walker, PM, Zhu, S, Lunardi, S, Bizzeti, PG, Kabana, S, Bucci, C, Chiari, M, Dainese, A, DiNezza, P, Menegazzo, R, Nannini, A, Signorini, C, and ValienteDobon, JJ

Published
2014

232. 1p(3/2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82

Author

Taprogge, J, Jungclaus, A, Grawe, H, Nishimura, S, Doornenbal, P, Lorusso, G, Simpson, GS, Soederstroem, P-A, Sumikama, T, Xu, ZY, Baba, H, Browne, F, Fukuda, N, Gernhaeuser, R, Gey, G, Inabe, N, Isobe, T, Jung, HS, Kameda, D, Kim, GD, Kim, Y-K, Kojouharov, I, Kubo, T, Kurz, N, Kwon, YK, Li, Z, Sakurai, H, Schaffner, H, Steiger, K, Suzuki, H, Takeda, H, Vajta, Zs, Watanabe, H, Wu, J, Yagi, A, Yoshinaga, K, Benzoni, G, Boenig, S, Chae, KY, Coraggio, L, Covello, A, Daugas, J-M, Drouet, F, Gadea, A, Gargano, A, Ilieva, S, Kondev, FG, Kroell, T, Lane, GJ, Montaner-Piza, A, Moschner, K, Muecher, D, Naqvi, F, Niikura, M, Nishibata, H, Odahara, A, Orlandi, Riccardo, Patel, Z, Podolyak, Zs, and Wendt, A

Abstract

A low-lying state in 131In82, the one-proton hole nucleus with respect to double magic 132Sn, was observed by its γ decay to the Iπ ¼ 1=2− β-emitting isomer. We identify the new state at an excitation energy of Ex ¼ 1353 keV, which was populated both in the β decay of 131Cd83 and after β-delayed neutron emission from 132Cd84, as the previously unknown πp3=2 single-hole state with respect to the 132Sn core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N ¼ 82 isotones below 132Sn. The results evidence a surprising absence of proton subshell closures along the chain of N ¼ 82 isotones. The consequences of this finding for the evolution of the N ¼ 82 shell gap along the r-process path are discussed. ispartof: Physical Review Letters vol:112 issue:13 pages:1-5 ispartof: location:United States status: published

Published
2014

233. 1p3=2 Proton-Hole State in 132Sn and the Shell Structure Along N ¼ 82

Author

Taprogge, Jan, Jungclaus, A., Grawe, H., Nishimura, Shunji, Doornenbal, Pieter, Lorusso, Giuseppe, Simpson, G. S., Söderström, Pär-Anders, Sumikama, Toshiyuki, Xu, Z. Y., Baba, H., Browne, Frank, Fukuda, Naoki, Gernhäuser, R., Gey, Guillaume, Inabe, Naohiro, Isobe, Tadaaki, Jung, H. S., Kameda, Daisuke, Kim, G. D., Kim, Y.-K., Kojouharov, I., Kubo, Toshiyuki, Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, Hiroshi, Takeda, Hiroyuki, Vajta, Zsolt, Watanabe, Hiroshi, Wu, J., Yagi, Ayumi, Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Covello, A., Daugas, J.-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, Hiroki, Odahara, Atsuko, Orlandi, R., Patel, Zena, Podolyák, Zs., Wendt, A., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), and ILL

Subjects
Természettudományok, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], ddc:550, Fizikai tudományok
Abstract

A low-lying state in 131In82, the one-proton hole nucleus with respect to double magic 132Sn, was observed by its γ decay to the Iπ=1/2- β-emitting isomer. We identify the new state at an excitation energy of Ex=1353 keV, which was populated both in the β decay of 131Cd83 and after β-delayed neutron emission from 132Cd84, as the previously unknown πp3/2 single-hole state with respect to the 132Sn core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below 132Sn. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed.

Published
2014
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234. PROPERTIES OF γ-DECAYING ISOMERS IN THE 100Sn REGION REVISITED.

Author

HAEFNER, G., MOSCHNER, K., BLAZHEV, A., BOUTACHKOV, P., DAVIES, P. J., WADSWORTH, R., AMEIL, F., BABA, H., BÄCK, T., DEWALD, M., DOORNENBAL, P., FAESTERMANN, T., GENGELBACH, A., GERL, J., GERNHÄUSER, R., GO, S., GÓRSKA, M., GRAWE, H., GREGOR, E., and HOTAKA, H.

Subjects
FRAGMENTATION reactions, NUCLEAR astrophysics, ISOMERS, NUCLEAR structure, RADIOACTIVE nuclear beams, SILICON detectors, ION beams
Abstract

The study of nuclei in the region around the N = Z doubly-magic nucleus 100Sn has been of long standing interest for the nuclear structure and nuclear astrophysics. Recently, Park et al. have reported on properties of -decaying isomers and isomeric ratios in the vicinity of 100Sn. That experiment was performed at the Radioactive Ion Beam Factory (RIBF) of the RIKEN Nishina Center in Japan as a part of the EURICA campaign. Neutron-deficient nuclei were produced in a fragmentation reaction of a 124Xe primary beam on a 9Be target at an energy of 345 MeV/A. Secondary ions were separated and identified in the BigRIPS fragment separator and implanted in the silicon detector array WAS3ABi. The data presented here were obtained in another experiment performed at the RIBF using the same reaction but slightly different separator settings. New results of ratios of isomeric population and half-lives of -decaying isomers populated in the experiment are presented. [ABSTRACT FROM AUTHOR]

Published
2019
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235. beta-delayed gamma-ray spectroscopy of Au-203,Au-204 and Pt200-202

Author

Morales, AI, Benlliure, J, Gorska, M, Grawe, H, Verma, S, Regan, PH, Podolyak, Z, Pietri, S, Kumar, R, Casarejos, E, Algora, A, Alkhomashi, N, Alvarez-Pol, H, Benzoni, G, Blazhev, A, Boutachkov, P, Bruce, AM, Caceres, LS, Cullen, IJ, Bacelar, AMD, Doornenbal, P, Estevez-Aguado, ME, Farrelly, G, Fujita, Y, Garnsworthy, AB, Gelletly, W, Gerl, J, Grebosz, J, Hoischen, R, Kojouharov, I, Kurz, N, Lalkovski, S, Liu, Z, Mihai, C, Molina, F, Muecher, D, Prokopowicz, W, Rubio, B, Schaffner, H, Steer, SJ, Tamii, A, Tashenov, S, Valiente-Dobon, JJ, Walker, PM, Wollersheim, HJ, and Woods, PJ

Published
2013

248. High spin states in128Ba

Author

Wolters, H., Schiffer, K., Gelberg, A., Dewald, A., Eberth, J., Reinhardt, R., Zell, K. O., Brentano, P. V., Alber, D., and Grawe, H.

Published
1987
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