Study of the Fission Isomer /Sup 240M/Am (S.F.) Using Laser-Induced Nuclear Polarization

摘要

The optical isomer shift was measured for the spontaneously fissioning isomer /sup 240m/Am. This shift is approximately 27 times greater than the exp 241 Am- exp 243 Am isotope shift, and confirms the conventional identification of fission isomers with large deformation. The measured isomer shift is consistent with a nuclear quadrupole moment of 30.4 b, in agreement with theoretical expectations. 2 figures. (ERA citation 05:039067)