Fermi's golden rule applied to the γ decay in the quasicontinuum of Ti46

M. Guttormsen, A. C. Larsen, A. Bürger, A. Görgen, S. Harissopulos, M. Kmiecik, T. Konstantinopoulos, M. Krtička, A. Lagoyannis, T. Lönnroth, K. Mazurek, M. Norrby, H. T. Nyhus, G. Perdikakis, A. Schiller, S. Siem, A. Spyrou, N. U.H. Syed, H. K. Toft, G. M. TvetenA. Voinov

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Abstract

Particle-γ coincidences from the Ti46(p,p⊃′γ)Ti46 inelastic scattering reaction with 15-MeV protons are utilized to obtain γ-ray spectra as a function of excitation energy. The rich data set allows analyzsis of the coincidence data with various gates on excitation energy. For many independent data sets, this enables a simultaneous extraction of level density and radiative strength function (RSF). The results are consistent with one common level density. The data seem to exhibit a universal RSF as the deduced RSFs from different excitation energies show only small fluctuations provided that only excitation energies above 3 MeV are taken into account. If transitions to well-separated low-energy levels are included, the deduced RSF may change by a factor of 2-3, which might be expected because of the involved Porter-Thomas fluctuations.

Original languageEnglish
Article number014312
JournalPhysical Review C - Nuclear Physics
Volume83
Issue number1
DOIs
StatePublished - Jan 26 2011

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