engleski

Nuclear structure study of semi-magic 125Sn via (n,γ) and (d,p) reactions

The nuclear structure of the semi-magic isotope 125Sn was investigated by means of the 124Sn(nth, gamma-gamma)125Sn reaction and the 124Sn(d, p)125Sn reaction. More than 400 levels, in most cases with their spin, parity, (d, p) spectroscopic factor and gamma-decay, were identi¯ ; ed. About 750 ° transitions from our (n, gamma-gamma) experiment form the essentially complete gamma-decay scheme following thermal neutron capture. Using this extensive gamma-decay scheme the neutron binding energy was determined to be 5733.5(2) keV. The strong correlation of the (d, p) strengths and the (n, gamma) intensities for more than 50 levels gives evidence for the direct neutron capture process which was studied in detail. The experimental data were compared with predictions of the Quasiparticle Phonon Model (QPM).

Nuclear structure ; thermal neutron

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