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Start Over Author "Mantica, P" Journal physical review letters
28 results on '"Mantica, P"'

1. Charge Radii of Neutron DeficientFe52,53Produced by Projectile Fragmentation

Author

Minamisono, K., primary, Rossi, D. M., additional, Beerwerth, R., additional, Fritzsche, S., additional, Garand, D., additional, Klose, A., additional, Liu, Y., additional, Maaß, B., additional, Mantica, P. F., additional, Miller, A. J., additional, Müller, P., additional, Nazarewicz, W., additional, Nörtershäuser, W., additional, Olsen, E., additional, Pearson, M. R., additional, Reinhard, P.-G., additional, Saperstein, E. E., additional, Sumithrarachchi, C., additional, and Tolokonnikov, S. V., additional

Published
2016
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3. A Key to Improved Ion Core Confinement in the JET Tokamak: Ion Stiffness Mitigation due to Combined Plasma Rotation and Low Magnetic Shear

Author

Mantica, P., primary, Angioni, C., additional, Challis, C., additional, Colyer, G., additional, Frassinetti, L., additional, Hawkes, N., additional, Johnson, T., additional, Tsalas, M., additional, deVries, P. C., additional, Weiland, J., additional, Baiocchi, B., additional, Beurskens, M. N. A., additional, Figueiredo, A. C. A., additional, Giroud, C., additional, Hobirk, J., additional, Joffrin, E., additional, Lerche, E., additional, Naulin, V., additional, Peeters, A. G., additional, Salmi, A., additional, Sozzi, C., additional, Strintzi, D., additional, Staebler, G., additional, Tala, T., additional, Van Eester, D., additional, and Versloot, T., additional

Published
2011
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4. Tripathiet al.Reply

Author

Tripathi, Vandana, primary, Tabor, S. L., additional, Mantica, P. F., additional, Utsuno, Y., additional, Bender, P., additional, Cook, J., additional, Hoffman, C. R., additional, Lee, Sangjin, additional, Otsuka, T., additional, Pereira, J., additional, Perry, M., additional, Pepper, K., additional, Pinter, J. S., additional, Stoker, J., additional, Volya, A., additional, and Weisshaar, D., additional

Published
2010
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5. Experimental Study of the Ion Critical-Gradient Length and Stiffness Level and the Impact of Rotation in the JET Tokamak

Author

Mantica, P., primary, Strintzi, D., additional, Tala, T., additional, Giroud, C., additional, Johnson, T., additional, Leggate, H., additional, Lerche, E., additional, Loarer, T., additional, Peeters, A. G., additional, Salmi, A., additional, Sharapov, S., additional, Van Eester, D., additional, de Vries, P. C., additional, Zabeo, L., additional, and Zastrow, K.-D., additional

Published
2009
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7. Production andβDecay ofrp-Process NucleiCd96,In98, andSn100

Author

Bazin, D., primary, Montes, F., additional, Becerril, A., additional, Lorusso, G., additional, Amthor, A., additional, Baumann, T., additional, Crawford, H., additional, Estrade, A., additional, Gade, A., additional, Ginter, T., additional, Guess, C. J., additional, Hausmann, M., additional, Hitt, G. W., additional, Mantica, P., additional, Matos, M., additional, Meharchand, R., additional, Minamisono, K., additional, Perdikakis, G., additional, Pereira, J., additional, Pinter, J., additional, Portillo, M., additional, Schatz, H., additional, Smith, K., additional, Stoker, J., additional, Stolz, A., additional, and Zegers, R. G. T., additional

Published
2008
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8. Intruder Configurations in theA=33Isobars:Mg33andAl33

Author

Tripathi, Vandana, primary, Tabor, S. L., additional, Mantica, P. F., additional, Utsuno, Y., additional, Bender, P., additional, Cook, J., additional, Hoffman, C. R., additional, Lee, Sangjin, additional, Otsuka, T., additional, Pereira, J., additional, Perry, M., additional, Pepper, K., additional, Pinter, J. S., additional, Stoker, J., additional, Volya, A., additional, and Weisshaar, D., additional

Published
2008
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9. Probing Shell Structure and Shape Changes in Neutron-Rich Sulfur Isotopes through Transient-Fieldg-Factor Measurements on Fast Radioactive Beams ofS38andS40.

Author

Davies, A. D., primary, Stuchbery, A. E., additional, Mantica, P. F., additional, Davidson, P. M., additional, Wilson, A. N., additional, Becerril, A., additional, Brown, B. A., additional, Campbell, C. M., additional, Cook, J. M., additional, Dinca, D. C., additional, Gade, A., additional, Liddick, S. N., additional, Mertzimekis, T. J., additional, Mueller, W. F., additional, Terry, J. R., additional, Tomlin, B. E., additional, Yoneda, K., additional, and Zwahlen, H., additional

Published
2006
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10. Nuclear Magnetic Moment of theCu57Ground State

Author

Minamisono, K., primary, Mantica, P. F., additional, Mertzimekis, T. J., additional, Davies, A. D., additional, Hass, M., additional, Pereira, J., additional, Pinter, J. S., additional, Rogers, W. F., additional, Stoker, J. B., additional, Tomlin, B. E., additional, and Weerasiri, R. R., additional

Published
2006
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11. Probing Internal Transport Barriers with Heat Pulses in JET

Author

Mantica, P., primary, Van Eester, D., additional, Garbet, X., additional, Imbeaux, F., additional, Laborde, L., additional, Mantsinen, M., additional, Marinoni, A., additional, Mazon, D., additional, Moreau, D., additional, Hawkes, N., additional, Joffrin, E., additional, Kiptily, V., additional, Pinches, S., additional, Salmi, A., additional, Sharapov, S., additional, Thyagaraja, A., additional, Voitsekhovitch, I., additional, de Vries, P., additional, and Zastrow, K.-D., additional

Published
2006
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13. Na29: Defining the Edge of the Island of Inversion forZ=11

Author

Tripathi, Vandana, primary, Tabor, S. L., additional, Mantica, P. F., additional, Hoffman, C. R., additional, Wiedeking, M., additional, Davies, A. D., additional, Liddick, S. N., additional, Mueller, W. F., additional, Otsuka, T., additional, Stolz, A., additional, Tomlin, B. E., additional, Utsuno, Y., additional, and Volya, A., additional

Published
2005
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14. Lowest Excitations inTi56and the PredictedN=34Shell Closure

Author

Liddick, S. N., primary, Mantica, P. F., additional, Janssens, R. V. F., additional, Broda, R., additional, Brown, B. A., additional, Carpenter, M. P., additional, Fornal, B., additional, Honma, M., additional, Mizusaki, T., additional, Morton, A. C., additional, Mueller, W. F., additional, Otsuka, T., additional, Pavan, J., additional, Stolz, A., additional, Tabor, S. L., additional, Tomlin, B. E., additional, and Wiedeking, M., additional

Published
2004
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19. Stabilization of Sawteeth with Additional Heating in the JET Tokamak

Author

Campbell, D. J., primary, Start, D. F. H., additional, Wesson, J. A., additional, Bartlett, D. V., additional, Bhatnagar, V. P., additional, Bures, M., additional, Cordey, J. G., additional, Cottrell, G. A., additional, Dupperex, P. A., additional, Edwards, A. W., additional, Challis, C. D., additional, Gormezano, C., additional, Gowers, C. W., additional, Granetz, R. S., additional, Hammen, J. H., additional, Hellsten, T., additional, Jacquinot, J., additional, Lazzaro, E., additional, Lomas, P. J., additional, Cardozo, N. Lopes, additional, Mantica, P., additional, Snipes, J. A., additional, Stork, D., additional, Stott, P. E., additional, Thomas, P. R., additional, Thompson, E., additional, Thomsen, K., additional, and Tonetti, G., additional

Published
1988
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20. Charge Radii of Neutron Deficient 52,53Fe Produced by Projectile Fragmentation.

Author

Minamisono, K., Rossi, D. M., Beerwerth, R., Fritzsche, S., Garand, D., Klose, A., Liu, Y., Maaß, B., Mantica, P. F., Miller, A. J., Müller, P., Nazarewicz, W., Nörtershäuser, W., Olsen, E., Pearson, M. R., Reinhard, P.-G., Saperstein, E. E., Sumithrarachchi, C., and Tolokonnikov, S. V.

Subjects
*PROJECTILES, *SPECTROMETRY
Abstract

Bunched-beam collinear laser spectroscopy is performed on neutron deficient 52,53Fe prepared through in-flight separation followed by a gas stopping. This novel scheme is a major step to reach nuclides far from the stability line in laser spectroscopy. Differential mean-square charge radii δ⟨r²⟩ of 52,53Fe are determined relative to stable 56Fe as δ⟨r²⟩56,52 = -0.034(13) fm² and δ⟨r²⟩56,53 = -0.218(13) fm², respectively, from the isotope shift of atomic hyperfine structures. The multiconfiguration Dirac-Fock method is used to calculate atomic factors to deduce δ⟨r²⟩. The values of δ⟨r²⟩ exhibit a minimum at the N = 28 neutron shell closure. The nuclear density functional theory with Fayans and Skyrme energy density functionals is used to interpret the data. The trend of δ⟨r²⟩ along the Fe isotopic chain results from an interplay between single-particle shell structure, pairing, and polarization effects and provides important data for understanding the intricate trend in the δ⟨r²⟩ of closed-shell Ca isotopes. [ABSTRACT FROM AUTHOR]

Published
2016
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21. Charge Radii of Neutron Deficient ^{52,53}Fe Produced by Projectile Fragmentation.

Author

Minamisono K, Rossi DM, Beerwerth R, Fritzsche S, Garand D, Klose A, Liu Y, Maaß B, Mantica PF, Miller AJ, Müller P, Nazarewicz W, Nörtershäuser W, Olsen E, Pearson MR, Reinhard PG, Saperstein EE, Sumithrarachchi C, and Tolokonnikov SV

Abstract

Bunched-beam collinear laser spectroscopy is performed on neutron deficient ^{52,53}Fe prepared through in-flight separation followed by a gas stopping. This novel scheme is a major step to reach nuclides far from the stability line in laser spectroscopy. Differential mean-square charge radii δ⟨r^{2}⟩ of ^{52,53}Fe are determined relative to stable ^{56}Fe as δ⟨r^{2}⟩^{56,52}=-0.034(13)  fm^{2} and δ⟨r^{2}⟩^{56,53}=-0.218(13)  fm^{2}, respectively, from the isotope shift of atomic hyperfine structures. The multiconfiguration Dirac-Fock method is used to calculate atomic factors to deduce δ⟨r^{2}⟩. The values of δ⟨r^{2}⟩ exhibit a minimum at the N=28 neutron shell closure. The nuclear density functional theory with Fayans and Skyrme energy density functionals is used to interpret the data. The trend of δ⟨r^{2}⟩ along the Fe isotopic chain results from an interplay between single-particle shell structure, pairing, and polarization effects and provides important data for understanding the intricate trend in the δ⟨r^{2}⟩ of closed-shell Ca isotopes.

Published
2016
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22. Production and beta decay of rp-process nuclei 96Cd, 98In, and 100Sn.

Author

Bazin D, Montes F, Becerril A, Lorusso G, Amthor A, Baumann T, Crawford H, Estrade A, Gade A, Ginter T, Guess CJ, Hausmann M, Hitt GW, Mantica P, Matos M, Meharchand R, Minamisono K, Perdikakis G, Pereira J, Pinter J, Portillo M, Schatz H, Smith K, Stoker J, Stolz A, and Zegers RG

Abstract

The beta-decay properties of the N=Z nuclei 96Cd, 98In, and 100Sn have been studied. These nuclei were produced at the National Superconducting Cyclotron Laboratory by fragmenting a 120 MeV/nucleon 112Sn primary beam on a Be target. The resulting radioactive beam was filtered in the A1900 and the newly commissioned Radio Frequency Fragment Separator to achieve a purity level suitable for decay studies. The observed production cross sections of these nuclei are lower than predicted by factors of 10-30. The half-life of 96Cd, which was the last experimentally unknown waiting point half-life of the astrophysical rp process, is 1.03_{-0.21};{+0.24} s. The implications of the experimental T_{1/2} value of 96Cd on the abundances predicted by rp process calculations and the origin of A=96 isobars such as 96Ru are explored.

Published
2008
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23. Probing shell structure and shape changes in neutron-rich sulfur isotopes through transient-field g-factor measurements on fast radioactive beams of 38S and 40S.

Author

Davies AD, Stuchbery AE, Mantica PF, Davidson PM, Wilson AN, Becerril A, Brown BA, Campbell CM, Cook JM, Dinca DC, Gade A, Liddick SN, Mertzimekis TJ, Mueller WF, Terry JR, Tomlin BE, Yoneda K, and Zwahlen H

Abstract

The shell structure underlying shape changes in neutron-rich nuclei near N = 28 has been investigated by a novel application of the transient-field technique to measure the first-excited-state g factors in 38S and 40S produced as fast radioactive beams. There is a fine balance between proton and neutron contributions to the magnetic moments in both nuclei. The g factor of deformed 40S does not resemble that of a conventional collective nucleus because spin contributions are more important than usual.

Published
2006
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24. Nuclear magnetic moment of the 57Cu ground state.

Author

Minamisono K, Mantica PF, Mertzimekis TJ, Davies AD, Hass M, Pereira J, Pinter JS, Rogers WF, Stoker JB, Tomlin BE, and Weerasiri RR

Abstract

The nuclear magnetic moment of the ground state of (57)Cu(Iota(pi) = 3/2(-), T(1/2) = 196.3 ms) has been measured to be /mu((57)Cu)/ = (2.00 +/- 0.05)mu(N) using the beta-NMR technique. Together with the known magnetic moment of the mirror partner (57)Ni, the spin expectation value was extracted as = -0.078 +/- 0.13. This is the heaviest isospin mirror T = 1/2 pair above the (40)Ca region for which both ground state magnetic moments have been determined. The discrepancy between the present results and shell-model calculations in the full f p shell giving mu((57)Cu) approximately 2.4mu(N) and approximately 0.5 implies significant shell breaking at (56)Ni with the neutron number N = 28.

Published
2006
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25. 29Na: defining the edge of the island of inversion for Z=11.

Author

Tripathi V, Tabor SL, Mantica PF, Hoffman CR, Wiedeking M, Davies AD, Liddick SN, Mueller WF, Otsuka T, Stolz A, Tomlin BE, Utsuno Y, and Volya A

Abstract

The low-energy level structure of the exotic Na isotopes (28,29)Na has been investigated through beta-delayed gamma spectroscopy. The N=20 isotones for Z=10-12 are considered to belong to the "island of inversion" where intruder configurations dominate the ground state wave function. However, it is an open question as to where and how the transition from normal to intruder dominated configurations happens in an isotopic chain. The present work, which presents the first detailed spectroscopy of (28,29)Na, clearly demonstrates that such a transition in the Na isotopes occurs between 28Na (N=17) and 29Na (N=18), supporting the smaller N=20 shell gap in neutron-rich sd shell nuclei. The evidence for inverted shell structure is found in beta-decay branching ratios, intruder dominated spectroscopy of low-lying states, and shell model analysis.

Published
2005
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26. Half-life of the doubly magic r-process nucleus 78Ni.

Author

Hosmer PT, Schatz H, Aprahamian A, Arndt O, Clement RR, Estrade A, Kratz KL, Liddick SN, Mantica PF, Mueller WF, Montes F, Morton AC, Ouellette M, Pellegrini E, Pfeiffer B, Reeder P, Santi P, Steiner M, Stolz A, Tomlin BE, Walters WB, and Wöhr A

Abstract

Nuclei with magic numbers serve as important benchmarks in nuclear theory. In addition, neutron-rich nuclei play an important role in the astrophysical rapid neutron-capture process (r process). 78Ni is the only doubly magic nucleus that is also an important waiting point in the r process, and serves as a major bottleneck in the synthesis of heavier elements. The half-life of 78Ni has been experimentally deduced for the first time at the Coupled Cyclotron Facility of the National Superconducting Cyclotron Laboratory at Michigan State University, and was found to be 110(+100)(-60) ms. In the same experiment, a first half-life was deduced for 77Ni of 128(+27)(-33) ms, and more precise half-lives were deduced for 75Ni and 76Ni of 344(+20)(-24) ms and 238(+15)(-18) ms, respectively.

Published
2005
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27. Lowest excitations in 56Ti and the predicted N=34 shell closure.

Author

Liddick SN, Mantica PF, Janssens RV, Broda R, Brown BA, Carpenter MP, Fornal B, Honma M, Mizusaki T, Morton AC, Mueller WF, Otsuka T, Pavan J, Stolz A, Tabor SL, Tomlin BE, and Wiedeking M

Abstract

Recent experimental characterization of the subshell closure at N=32 in the Ca, Ti, and Cr isotones has stimulated shell-model calculations that indicated the possibility that the N=34 isotones of these same elements could exhibit characteristics of a shell closure, namely, a high energy for the first excited 2(+) level. To that end, we have studied the decay of 56Sc produced in fragmentation reactions and identified new gamma rays in the daughter N=34 isotone 56Ti. The first 2(+) level is found at an energy of 1127 keV, well below the expected position that would indicate the presence of an N=34 shell closure in 56Ti.

Published
2004
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28. Spin polarization of 37K produced in a single-proton pickup reaction at intermediate energies.

Author

Groh DE, Mantica PF, Stuchbery AE, Stolz A, Mertzimekis TJ, Rogers WF, Davies AD, Liddick SN, and Tomlin BE

Abstract

Spin polarization of 37K nuclei produced via single proton pickup from a 9Be target by a beam of 150 MeV/nucleon 36Ar has been observed. Positive spin polarization with magnitude (8.5+/-0.6)% was deduced near the peak of the 37K momentum distribution. The variation of the spin polarization as a function of outgoing 37K momentum is explained by a classical conservation model, as previously applied to describe the induced spin polarization observed for fragments produced in intermediate-energy heavy-ion reactions, with the condition that the picked-up proton has an average momentum equal to the Fermi momentum and is aligned along the incident beam direction.

Published
2003
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