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标题：Production of 128 I Atoms through 127 I (n,γ) 128 I Reactions in some Solid Iodocompounds using an ( 241 Am-Be) Neutron Source
其他标题：Production of 128I Atoms through 127I (n,γ) 128I Reactions in some Solid Iodocompounds using an (241Am-Be) Neutron Source
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作者：M. R. Zaman ; M. A. Hossain ; M. J. A. Sarkar 等
期刊名称：Journal of Scientific Research
印刷版ISSN：2070-0237
电子版ISSN：2070-0245
出版年度：2011
卷号：3
期号：2
页码：357-366
DOI：10.3329/jsr.v3i2.6385
语种：English
出版社：Rajshahi University
摘要：Present work reports the production of 128I atoms through 127I (n,g) 128I reactions in six iodine containing compounds (viz. NaI, NaIO3, NaIO4, KI, KIO3 and KIO4) in solid state. An 241Am-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 128I has been estimated ~25 minutes. The average zero time activities of 128I from three independent measurements in each of NaI, NaIO3.H2O, NaIO4, KI, KIO3 and KIO4 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 NaIO4 or from KI to KIO4. Results are attributed to the quantity of 128I produced in a specified volume element and, self absorption and self scattering of radiations within the target compounds studied. Keywords: Iodocompounds; 128I; 241Am-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.v3i2.6385 J. Sci. Res. 3 (2), 357-366 (2011)
关键词：Nuclear Science;Iodocompounds; 128I; 241Am-Be neutron source; Chemical effects of nuclear transformation.