New lifetime measurements in the stable semimagic Sn isotopes using the Doppler-shift attenuation technique

A. Jungclaus, J. Walker, J. Leske, K. H. Speidel, A. E. Stuchbery, M. East, P. Boutachkov, J. Cederkäll, P. Doornenbal, J. L. Egido, A. Ekström, J. Gerl, R. Gernhäuser, N. Goel, M. Górska, I. Kojouharov, P. Maier-Komor, V. Modamio, F. Naqvi, N. PietrallaS. Pietri, W. Prokopowicz, H. Schaffner, R. Schwengner, H. J. Wollersheim

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Abstract

Precise measurements of lifetimes in the picosecond range of excited states in the stable even-A Sn isotopes 112,114,116,122Sn have been performed using the Doppler shift attenuation technique. For the first excited 2+ states in 112Sn, 114Sn and 116Sn the E2 transition strengths deduced from the measured lifetimes are in disagreement with the previously adopted values. They indicate a shallow minimum at N = 66 in contrast to the maximum at mid-shell predicted by modern shell model calculations.

Original languageEnglish
Article number092033
JournalJournal of Physics: Conference Series
Volume312
Issue numberSECTION 9
DOIs
Publication statusPublished - 2011

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