SOLID STATE AND NUCLEAR RESULTS FROM MOSSBAUER STUDIES WITH I129

Abstract : The Mossbauer effect of the 26.8 keV transition in I129 was studied in a number of compounds. The isomeric shifts for the alkali iodides were found to be linearly dependent on the number of 5p holes in the iodine ion. A relative change of nuclear radius =0.00003 is computed. The isomeric shifts for some iodates indicate that their 5s-electron density is about 18% larger than that of the iodides. The quadrupole splitting of KIO3 was used to determine the I129 quadrupole ratio.