Evidence for octupole collectivity in Pt-172

Ertoprak, Ayşegül; Cederwall, B.; Qi, C.; Aktas, O.; Doncel, M.; Hadinia, B.; Liotta, R.; Sandzelius, M.; Scholey, C.; Andgren, K.; Back, T.; Badran, H.; Braunroth, T.; Calverley, T.; Cox, D.; Cullen, D.; Fang, Y.; Ganioglu, Ela; Giles, M.; Gomez Hornillos, M.; Grahn, T.; Greenlees, P.; Hilton, J.; Hodge, D.; Ideguchi, E.; Jakobsson, U.; Johnson, A.; Jones, P.; Julin, R.; Juutinen, S.; Ketelhut, S.; Khaplanov, A.; Kumar Raju, M.; Leino, M.; Li, H.; Liu, H.; Matta, S.; Modamio, V.; Nara Singh, B.; Niikura, M.; Nyman, M.; Ozgur, İffet; Page, R.; Pakarinen, J.; Papadakis, P.; Partanen, J.; Paul, E.; Petrache, C.; Peura, P.; Rahkila, P.; Ruotsalainen, P.; Saren, J.; Sorri, J.; Stolze, S.; Subramaniam, P.; Taylor, M.; Uusitalo, J.; Valiente-Dobon, J.; Wyss, R.

doi:10.1140/epja/s10050-020-00071-6

Evidence for octupole collectivity in Pt-172

Atıf İçin Kopyala

Ertoprak A., Cederwall B., Qi C., Aktas O., Doncel M., Hadinia B., ...Daha Fazla

EUROPEAN PHYSICAL JOURNAL A, cilt.56, sa.2, 2020 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 56 Sayı: 2
Basım Tarihi: 2020
Doi Numarası: 10.1140/epja/s10050-020-00071-6
Dergi Adı: EUROPEAN PHYSICAL JOURNAL A
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, INSPEC, zbMATH
İstanbul Üniversitesi Adresli: Evet

Özet

Excited states in the extremely neutron-deficient nucleus Pt-172 were populated via Ru-96(Kr-78, 2p) and Mo-92(Kr-83, 3n) reactions. The level scheme has been extended up to an excitation energy of approximate to 5MeV and tentative spin-parity assignments up to I-pi = 18(+). Linear polarization and angular distribution measurements were used to determine the electromagnetic E1 character of the dipole transitions connecting the positive-parity ground-state band with an excited side-band, firmly establishing it as a negativeparity band. The lowestmember of this negative-parity structure was firmly assigned spin-parity 3(-). In addition, we observed an E3 transition from this 3(-) state to the ground state, providing direct evidence for octupole collectivity in Pt-172. Large-scale shell model (LSSM) and total Routhian surface (TRS) calculations have been performed, supporting the interpretation of the 3(-) state as a collective octupole-vibrational state.