1. New lifetime measurements in the stable semimagic Sn isotopes using the Doppler-shift attenuation technique
- Author
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Jungclaus, A., Walker, J., Leske, J., Speidel, K.-H., Stuchbery, A. E., East, M., Boutachkov, P., Cederkäll, J., Doornenbal, P., Egido, J. L., Ekström, A., Gerl, J., Gernhäuser, R., Goel, N., Górska, M., Kojouharov, I., Maier-Komor, P., Modamio, V., Naqvi, F., Pietralla, N., Pietri, S., Prokopowicz, W., Schaffner, H., Schwengner, R., Wollersheim, H.-J., Jungclaus, A., Walker, J., Leske, J., Speidel, K.-H., Stuchbery, A. E., East, M., Boutachkov, P., Cederkäll, J., Doornenbal, P., Egido, J. L., Ekström, A., Gerl, J., Gernhäuser, R., Goel, N., Górska, M., Kojouharov, I., Maier-Komor, P., Modamio, V., Naqvi, F., Pietralla, N., Pietri, S., Prokopowicz, W., Schaffner, H., Schwengner, R., and Wollersheim, H.-J.
- Abstract
Precise measurements of lifetimes in the picosecond range of excited states in the stable even-A Sn isotopes ¹¹²,¹¹⁴,¹¹⁶,¹¹²Sn 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.
- Published
- 2024