Proton emission from an oblate nucleus Lu-151

Procter, M.; Cullen, D.; Taylor, M.; Alharshan, G.; Ferreira, L.; Maglione, E.; Auranen, K.; Grahn, T.; Greenlees, P.; Jakobsson, U.; Julin, R.; Herzan, A.; Konki, J.; Leino, M.; Pakarinen, J.; Partanen, J.; Peura, P.; Rahkila, R.; Ruotsalainen, P.; Sandzelius, M.; Saren, J.; Stolze, S.; Scholey, C.; Sorri, J.; Uusitalo, J.; Braunroth, T.; Ellinger, E.; Dewald, A.; Joss, D.; McPeake, C.; Saygi, BAHADIR

doi:10.1016/j.physletb.2013.06.045

Proton emission from an oblate nucleus Lu-151

Procter M. G., Cullen D. M., Taylor M. J., Alharshan G. A., Ferreira L. S., Maglione E., ...Daha Fazla

PHYSICS LETTERS B, cilt.725, sa.1-3, ss.79-84, 2013 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 725 Sayı: 1-3
Basım Tarihi: 2013
Doi Numarası: 10.1016/j.physletb.2013.06.045
Dergi Adı: PHYSICS LETTERS B
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.79-84
Anahtar Kelimeler: Lifetimes, B(E2), Recoil-distance Doppler-shift method, Recoil-decay tagging, Isomeric states, A=151, DIFFERENTIAL-PLUNGER, LIFETIME MEASUREMENTS
Ankara Üniversitesi Adresli: Hayır

Özet

Excited states in the proton-unbound nucleus Lu-151 have been established using gamma-ray coincidence techniques. The lifetime of the first excited state above the proton-emitting ground state has been measured using the recoil-distance Doppler-shift method combined with recoil-decay tagging. The experimental level scheme and extracted lifetime have been compared with state-of-the-art theoretical calculations based upon a non-adiabatic deformed Woods-Saxon potential. This comparison suggests that the proton-emitting ground state in Lu-151 is mildly oblate with a deformation beta = -0.11(-0.05)(+0.02) and represents best evidence to date for proton emission from an oblate nucleus. (C) 2013 Elsevier B.V. All rights reserved.