THE NUCLEAR STRUCTURE REFERENCES (NSR) FILE

摘要

Electromagnetic transitions between low-lying states in the odd proton nuclei 14459Pr82,14361PmB2, 14461Pm83 and 14361Pm84 with neutron numbers N≈82 were studied by means of m beam electron gamma spectroscopy The triple-focusing electron spectrum selector (TESS) was used to measure in beam conversion electrons The TESS, giving very good electron line spectra with small back ground was found to be very powerful for in beam spectroscopy Accurate values for the internal conversion coefficients (ICC) were obtained by measuring simultaneously both conversion electrons and -rays M2 E3 and some other multipolanties were uniquely assigned from the ICC for the transitions between low lying states Properties of these transitions and energy levels are discussed Analyses of the M2 and E3 transition rates gave respectively an isospm-spin (magnetic) core polarization effect and an couple core polarization effect The / forbidden Ml transitions were analyzed in terms of the tensor terms.