Статья

Coulomb excitation of 117, 119Sn

P. H. StelsonOak Ridge National Laboratory††, Oak Ridge, Tennessee USA ††Research sponsored by the US Atomic Energy Commission under contract with Union Carbide CorporationW.T. MilnerOak Ridge National Laboratory††, Oak Ridge, Tennessee USA ††Research sponsored by the US Atomic Energy Commission under contract with Union Carbide CorporationF. K. McGowanOak Ridge National Laboratory††, Oak Ridge, Tennessee USA ††Research sponsored by the US Atomic Energy Commission under contract with Union Carbide CorporationR.L. RobinsonOak Ridge National Laboratory††, Oak Ridge, Tennessee USA ††Research sponsored by the US Atomic Energy Commission under contract with Union Carbide CorporationS. RamanOak Ridge National Laboratory††, Oak Ridge, Tennessee USA ††Research sponsored by the US Atomic Energy Commission under contract with Union Carbide Corporation

1972en

ABI

Аннотация

A total of 5 states in 117Sn and 4 states in 119Sn were observed to be Coulomb excited with α-particle and 16O projectiles. Level energies, spins, B(E2) and B(M1) transition probabilities and mean-lives were obtained. For 117Sn, spin 32+ states were observed at 158.7 and 1005 keV and spin 52+ states were observed at 1020, 1180 and 1447 keV. For 119Sn, spin 32+ states were observed at 23.9 and 920.5 keV and spin 52+ states were observed at 921.4, 1090 and 1354 keV. A total of 20 B(E2) values were obtained and they varied in magnitude from 110 to 10 times the single-particle estimate. About 12 B(M1) values were obtained and they range from 10−1 to 10−4 of the single-particle estimate. Evidence was found for the existence of quadrupole collective states built on low-lying excited quasiparticle states.

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Идентификаторы

DOI: 10.1016/0375-9474(72)90137-6

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