INDC(IND)-35G - IAEA Nuclear Data Services
INDC(IND)-35G - IAEA Nuclear Data Services
INDC(IND)-35G - IAEA Nuclear Data Services
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- 9 _<br />
Effeot of excitation energy on the isotoplo yield distribution of Iodin» is vhe<br />
fission of 23 S.<br />
A.V.R. Reddy, T. Datta, S.M. Desbaukh, S.K. Sahakunda, S.B. llanohar, Satya Erakash<br />
and 11.7. iiaaaniah<br />
With an ata to examine the role of excitation energy on the charge/mass polariza-<br />
tion, studies on isotopio yield distribution of .iodine in the alpha induced fission<br />
of 252 Th ( 25 V\ 5* . 23.4 MeV) were oarried out and the obtained systeaatios of<br />
the distribution were ooapared with the ease in the thermal neutron induced fission<br />
of *"HJ ( *TJ , S -6.5 MeT), Irradiations wet* oaxxied out using external<br />
-particle beast of ener&- 30 ± 0.5 MeV at the 88" Variable Energy Cyolotron,<br />
Calcutta using thoriw aetal foil (29*7 •«/« ) target at a bean current of<br />
2.5 «A. Independent yields of iodlm f130-134) and cumulative yields of its<br />
precursors (Telluriua 131-134) were determined with and without radioohemioal<br />
separations for iodine using high resolution gana speotrometry, relative to the<br />
cumulative yield of ? 'l, and are given in Tables 1 and 2 respectively.<br />
Using the obtained independent yields of Iodine in the present work, the paraaeters<br />
of isotopic yield distribution via aost probable nass (A. ) and width of distribution<br />
( 0".) were evaluated aa 135*09 and 1.6 ±0.16 •ass units respectively and the<br />
corresponding values in low energy system are 135*90 and 1.21 + 0.12 aass units<br />
respectively* Inorease in