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Present work reports the production of 128 I atoms through 127 I (n,g) 128 I reactions in six iodine containing compounds ( viz. NaI, NaIO 3 , NaIO 4 , KI, KIO 3 and KIO 4 ) in solid state. An 241 Am-Be neutron source has been used for the production of 128 I atoms. The radioactivities produced have been measured by a thin end-window G.M. Counter. The irradiation time and counting geometry were constant throughout the present sets of experiments. Results obtained have been analyzed through time-decay analyses. From the decay curves, the half life of 128 I  has been estimated ~25 minutes. The average zero time activities of 128 I from three independent measurements in each of NaI, NaIO 3 .H 2 O, NaIO 4 , KI, KIO 3 and KIO 4 target, have been found 116 ± 2, 92 ± 4, 88 ± 6, 102 ± 6, 98 ± 1 and 93 ± 5 cpm respectively. It is interesting to note that the activities show a decreasing trend while passing through either from NaI to NaIO 4 or from KI to KIO 4 . Results are attributed to the quantity of 128 I produced in a specified volume element and, self absorption and self scattering of radiations within the target compounds studied. Keywords: Iodocompounds; 128 I; 241 Am-Be neutron source; Chemical effects of nuclear transformation. © 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi:10.3329/jsr.v3i2.6385J. Sci. Res. 3 (2), 357-366 (2011)

journal of scientific research

Production of 128I Atoms through 127I (n,&gamma;) 128I Reactions in some Solid Iodocompounds using an (241Am-Be) Neutron Source