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Your search keyword '"Dababneh, S."' showing total 7 results
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7 results on '"Dababneh, S."'

1. Electron capture of Xe54+ in collisions with H2 molecules in the energy range between 5.5 and 30.9 MeV/u

Author

Kröger, F. M., Weber, G., Herdrich, M. O., Glorius, J., Langer, C., Slavkovská, Z., Bott, L., Brandau, C., Brückner, B., Blaum, K., Chen, X., Dababneh, S., Davinson, T., Erbacher, P., Fiebiger, S., Gaßner, T., Göbel, K., Groothuis, M., Gumberidze, A., Gyürky, Gy., Hagmann, S., Hahn, C., Heil, M., Hess, R., Hensch, R., Hillmann, P., Hillenbrand, P.-M., Hinrichs, O., Jurado, B., Kausch, T., Khodaparast, A., Kisselbach, T., Klapper, N., Kozhuharov, C., Kurtulgil, D., Lane, G., Lederer-Woods, C., Lestinsky, M., Litvinov, S., Litvinov, Yury, Löher, B., Nolden, F., Petridis, N., Popp, U., Reed, M., Reifarth, R., Sanjari, M. S., Simon, H., Spillmann, U., Steck, M., Stumm, J., Szücs, T., Nguyen, T. T., Taremi Zadeh, A., Thomas, B., Torilov, S. Yu., Törnqvist, H., Trageser, C., Trotsenko, S., Volknandt, M., Weigand, M., Wolf, C., Woods, P. J., Shevelko, V. P., Tolstikhina, I. Yu., and Stöhlker, Th.

Subjects
Atomic Physics (physics.atom-ph), FOS: Physical sciences, ddc:530, Präzisionsexperimente - Abteilung Blaum, Nuclear Experiment, physics.atom-ph, Physics - Atomic Physics
Abstract

Physical review / A 102(4), 042825 (2020). doi:10.1103/PhysRevA.102.042825, Published by AIP Publishing, Woodbury, NY

Published
2020

2. Approaching the Gamow window with stored ions: Direct measurement of $^{124}$Xe(p,$��$) in the ESR storage ring

Author

Glorius, J., Langer, C., Slavkovsk��, Z., Bott, L., Brandau, C., Br��ckner, B., Blaum, K., Chen, X., Dababneh, S., Davinson, T., Erbacher, P., Fiebiger, S., Ga��ner, T., G��bel, K., Groothuis, M., Gumberidze, A., Gy��rky, G., Heil, M., Hess, R., Hensch, R., Hillmann, P., Hillenbrand, P. -M., Hinrichs, O., Jurado, B., Kausch, T., Khodaparast, A., Kisselbach, T., Klapper, N., Kozhuharov, C., Kurtulgil, D., Lane, G., Lederer-Woods, C., Lestinsky, M., Litvinov, S., Litvinov, Yu. A., L��her, B., Nolden, F., Petridis, N., Popp, U., Rauscher, T., Reed, M., Reifarth, R., Sanjari, M. S., Savran, D., Simon, H., Spillmann, U., Steck, M., St��hlker, T., Stumm, J., Surzhykov, A., Sz��cs, T., Nguyen, T. T., Zadeh, A. Taremi, Thomas, B., Torilov, S. Yu., T��rnqvist, H., Tr��ger, M., Trageser, C., Trotsenko, S., Varga, L., Volknandt, M., Weick, H., Weigand, M., Wolf, C., Woods, P. J., and Xing, Y. M.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

We report the first measurement of low-energy proton-capture cross sections of $^{124}$Xe in a heavy ion storage ring. $^{124}$Xe$^{54+}$ ions of five different beam energies between 5.5 AMeV and 8 AMeV were stored to collide with a windowless hydrogen target. The $^{125}$Cs reaction products were directly detected. The interaction energies are located on the high energy tail of the Gamow window for hot, explosive scenarios such as supernovae and X-ray binaries. The results serve as an important test of predicted astrophysical reaction rates in this mass range. Good agreement in the prediction of the astrophysically important proton width at low energy is found, with only a 30% difference between measurement and theory. Larger deviations are found above the neutron emission threshold, where also neutron- and $��$-widths significantly impact the cross sections. The newly established experimental method is a very powerful tool to investigate nuclear reactions on rare ion beams at low center-of-mass energies.

Published
2019
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3. Neutron activation of natural zinc samples at kT = 25 keV

Author

Reifarth, R., Dababneh, S., Heil, M., Käppeler, F., Plag, R., Sonnabend, K., and Uberseder, E.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex), Astrophysics - Instrumentation and Methods for Astrophysics, Nuclear Experiment, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

The neutron-capture cross sections of 64Zn, 68Zn, and 70Zn have been measured with the activation technique in a quasistellar neutron spectrum corresponding to a thermal energy of kT = 25 keV. By a series of repeated irradiations with different experimental conditions, an uncertainty of 3% could be achieved for the 64Zn(n,g)65Zn cross section and for the partial cross section 68Zn(n,g)69Zn-m feeding the isomeric state in 69Zn. For the partial cross sections 70Zn(n,g)71Zn-m and 70Zn(n,g)71Zn-g, which had not been measured so far, uncertainties of only 16% and 6% could be reached because of limited counting statistics and decay intensities. Compared to previous measurements on 64,68Zn, the uncertainties could be significantly improved, while the 70Zn cross section was found to be two times smaller than existing model calculations. From these results Maxwellian average cross sections were determined between 5 and 100 keV. Additionally, the beta-decay half-life of 71Zn-m could be determined with significantly improved accuracy. The consequences of these data have been studied by network calculations for convective core He burning and convective shell C burning in massive stars.

Published
2013
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4. The 14C(n,g) cross section between 10 keV and 1 MeV

Author

Reifarth, R., Heil, M., Forssen, C., Besserer, U., Couture, A., Dababneh, S., Doerr, L., Goerres, J., Haight, R. C., Kaeppeler, F., Mengoni, A., O'Brien, S., Patronis, N., Plag, R., Rundberg, R. S., Wiescher, M., and Wilhelmy, J. B.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Astrophysics - Instrumentation and Methods for Astrophysics, Nuclear Experiment, Instrumentation and Methods for Astrophysics (astro-ph.IM), astro-ph.IM
Abstract

The neutron capture cross section of 14C is of relevance for several nucleosynthesis scenarios such as inhomogeneous Big Bang models, neutron induced CNO cycles, and neutrino driven wind models for the r process. The 14C(n,g) reaction is also important for the validation of the Coulomb dissociation method, where the (n,g) cross section can be indirectly obtained via the time-reversed process. So far, the example of 14C is the only case with neutrons where both, direct measurement and indirect Coulomb dissociation, have been applied. Unfortunately, the interpretation is obscured by discrepancies between several experiments and theory. Therefore, we report on new direct measurements of the 14C(n,g) reaction with neutron energies ranging from 20 to 800 keV.

Published
2009
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5. The stellar (n,gamma) cross section of 62Ni

Author

Nassar, H., Paul, M., Ahmad, I., Berkovits, D., Bettan, M., Collon, P., Dababneh, S., Ghelberg, S., Greene, J. P., Heger, A., Heil, M., Henderson, D. J., Jiang, C. L., Kaeppeler, F., Koivisto, H., O'Brien, S., Pardo, R. C., Patronis, N., Pennington, T., Plag, R., Rehm, K. E., Reifarth, R., Scott, R., Sinha, S., Tang, X., and Vondrasek, R.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The 62Ni(n,gamma)63Ni(t_1/2=100+-2 yrs) reaction plays an important role in the control of the flow path of the slow neutron-capture (s-) nucleosynthesis process. We have measured for the first time the total cross section of this reaction for a quasi-Maxwellian (kT = 25 keV) neutron flux. The measurement was performed by fast-neutron activation, combined with accelerator mass spectrometry to detect directly the 63Ni product nuclei. The experimental value of 28.4+-2.8 mb, fairly consistent with a recent theoretical estimate, affects the calculated net yield of 62Ni itself and the whole distribution of nuclei with 62, Comment: 4 pages, 3 figures, revised paper, published PRL 94, 092504 (2005)

Published
2004
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7. Measurements of neutron capture cross-sections at n_TOF

Author

Tagliente, G., Abbondanno, U., Aerts, G., Alvarez-Velarde, F., Hector Alvarez Pol, Andriamonje, S., Andrzejewski, J., Badurek, G., Baumann, P., Becvar, F., Benlliure, J., Berthoumieux, E., Calvino, F., Cano-Ott, D., Capote, R., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., Dahlfors, M., David, S., Dolfini, R., Domingo-Pardo, C., Duran, I., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Frais-Koelbl, H., Furman, W., Goncalves, J., Gallino, R., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Isaev, S., Jericha, E., Kaeppeler, F., Kadi, Y., Karadimos, D., Kerveno, M., Ketlerov, V., Koehler, P., Konovalov, V., Krticka, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lorusso, G., Lozano, M., Lukic, S., Marganiec, J., Marrone, S., Martinez-Val, J., Massimi, C., Mastinu, P., Mengoni, A., Milazzo, P. M., Molina-Coballes, A., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O Brien, S., Pancin, J., Papaevangelou, I., Paradela, C., Pavlik, A., Pavlopoulos, P., Perlado, J. M., Perrot, L., Pignatari, M., Plag, R., Plompen, A., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, J., Rapp, W., Rauscher, T., Reifarth, R., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Soares, J. C., Stephan, C., Tain, J. L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vincente, M. C., Vlachoudis, V., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Civitarese, O., Dorso, C., Bermudez, Gg, Kreiner, Aj, Pacheco, Aj, and Scoccola, Nn

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