Structure of the N=50 As, Ge, Ga nuclei

SAHIN, E.; DE ANGELIS, G.; DUCHENE, G; FAUL, T.; GADEA, A.; Lisetskiy, A.; ACKERMANN, D.; ALGORA, A.; Aydin, S.; AZAIEZ, F.; BAZZACCO, D.; BENZONI, G.; Bostan, İsmail; BYRSKI, T.; CELIKOVIC, I.; CHAPMAN, R.; CORRADI, L.; COURTIN, S.; CURIEN, D.; PRAMANIK, U.; DIDIERJEAN, F.; DORVAUX, O.; Erduran, M.; ERTURK, S.; FARNEA, E.; FIORETTO, E.; DE FRANCE, G.; FRANCHOO, S.; GALL, B.; GOTTARDO, A.; GUIOT, B.; HAAS, F.; IBRAHIM, F.; Ince, Elif; KHOUAJA, A.; Kusoglu, Aslı; LA RANA, G.; LABICHE, M.; LEBHERTZ, D.; LENZI, S.; LEONI, S.; LUNARDI, S.; MASON, P.; MENGONI, D.; MICHELAGNOLI, C.; MODAMIO, V.; MONTAGNOLI, G.; MONTANARI, D.; MORO, R.; MOUGINOT, B.; NAPOLI, D.; O'DONNELL, D.; Oliveira, J.; OLLIER, J.; ORLANDI, R.; POLLAROLO, G.; RECCHIA, F.; ROBIN, J.; SALSAC, M.; SCARLASSARA, F.; SINGH, R.; SILVESTRI, R.; SMITH, J.; STEFAN, I.; STEFANINI, A.; SUBOTIC, K.; SZILNER, S.; TONEV, D.; TORRES, D.; TROTTA, M.; UJIC, P.; UR, C.; VALIENTE-DOBON, J.; VERNEY, D.; Yalcinkaya, Mehtap; WADY, P.; Wiedemann, K.; ZUBER, K.

doi:10.1016/j.nuclphysa.2012.08.007

Structure of the N=50 As, Ge, Ga nuclei

Atıf İçin Kopyala

SAHIN E., DE ANGELIS G., DUCHENE G., FAUL T., GADEA A., Lisetskiy A. F., ...Daha Fazla

NUCLEAR PHYSICS A, cilt.893, ss.1-12, 2012 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 893
Basım Tarihi: 2012
Doi Numarası: 10.1016/j.nuclphysa.2012.08.007
Dergi Adı: NUCLEAR PHYSICS A
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1-12
Anahtar Kelimeler: NUCLEAR REACTIONS U-238(Se-82, Ga-81), (Se-82, Ge-82), (Se-82, As-83), E=515 MeV, measured E gamma, I gamma (theta), gamma gamma-coin, reaction fragments, (fragment)gamma-coin, PRISMA magnetic spectrometer, gamma after deexcitation, Ge Compton-suppressed detectors of CLARA array, thin and thick target, deduced sigma(theta), levels, J, pi calculated levels, J, pi using shell model, STABILITY
İstanbul Üniversitesi Adresli: Evet

Özet

The level structures of the N = 50 As-83, Ge-82, and Ga-81 isotones have been investigated by means of multi-nucleon transfer reactions. A first experiment was performed with the CLARA PRISMA setup to identify these nuclei. A second experiment was carried out with the GASP array in order to deduce the gamma-ray coincidence information. The results obtained on the high-spin states of such nuclei are used to test the stability of the N = 50 shell closure in the region of Ni-78 (Z = 28). The comparison of the experimental level schemes with the shell-model calculations yields an N = 50 energy gap value of 4.7(3) MeV at Z = 28. This value, in a good agreement with the prediction of the finite-range liquid-drop model as well as with the recent large-scale shell model calculations, does not support a weakening of the N = 50 shell gap down to Z = 28. (c) 2012 Elsevier B.V. All rights reserved.