Internal-Conversion-Electron Study of the Decay ofRu103

Directional correlations of gamma-ray cascades in 103Rh

“…The isomeric state at 40 keV has been assigned by Goldhaber and Hill (1952) a configuration of [(g,12)5],,2 for the 5 protons outside the filled orbits and hence the spin and parity of this state have been taken to be 7/2+. The L-subshell ratio measurements by Manthuruthil et al (1968) of the 40-keV gamma transition are compatible with this assignment. From the same type of measurement, the 53-keV gamma-ray transition has been considered by the same authors to be a mixture of M1 + E2 with F 0.02.…”

“…This assignment can also be easily interpreted as an intrinsic g,/, state. However, a spin and parity assignment of 7/2+ to this state as suggested by Manthuruthil et al (1968) cannot be absolutely ruled out. Regarding the 537-and 650-keV levels various assignments are possible on the basis of published data.…”

“…The spin and parity of the ground states of lo3Ru and lo3Rh have been found to be 5/2+ (Mason et al 1959) and 112- (Kuhn and Woodgate 1951) respectively. The isomeric state at 40 keV has been assigned by Goldhaber and Hill (1952) a configuration of [(g,12)5],,2 for the 5 protons outside the filled orbits and hence the spin and parity of this state have been taken to be 7/2+.…”

“…Our results have been briefly reported previously (George et al 1967). Recently Manthuruthil et al (1968) combined our unpublished angular correlation data with their data on internal conversion coefficients of the gamma rays emitted in the decay of lo3Ru to assign spin and parity to the excited states of '03Rh. The purpose of the present paper is to give the details of our directional correlation measurements and also to indicate the compatibility of our data with interpretations other than those already given by Manthuruthil et al…”

“…The multipolarities of the gamma transitions deexciting these levels have also not been established. Manthuruthil et al (1968) undertook measurement of internal conversion coefficients (ICC) of the gamma-ray transitions following the beta decay of lo3Ru. The ICC values of some of the more intense radiations have been previously reported by several groups including Potnis et al (1966), de Rand et al (1 954), and Shpinel and Kuznetsova (1956).…”