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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- 15 -<br />
Cumulative yielda of short-lived ruthenium iaotopea in the tbanial neutron<br />
induced fisaion of 233 U, ®% and 239 Pu.<br />
A.O.C. Hair, Alolt Srivaatava, A. Goawami and B.K. Srivastava<br />
Cumulative yielda of 107 Ru, 108 Ru and 109 Bu in the fission of S3A U, 256 D and<br />
Fu have teen determined using fast radioohemloal separation teohniquea<br />
followed by high resolution ^-ray speotrometry. The fissile material a ( 1OyUg)<br />
«ere irradiated in pneumatio oarrier faoility of CIRUS reaotox for 20 seo. The<br />
ruthenium isotopes were aepaxated from the irradiated target by distilling<br />
rathenitw as RuO. froa fission products in presence of NaBiO- and was oollected<br />
in ice cooled 1M HC1. Using this method a chemioal yield of 50^ and high de-<br />
contamination (>1000) fxoa teohnetiUB and halogens were obtained. Cunulatire<br />
yields of ^Eu, Ra and Ru were oaloulated from the experimentally obtained<br />
count rates whioh are corrected fox detection efficiency and -ray atandancea,<br />
using standard equations, further, these yields were converted into ohain yialda<br />
assuming normal charge distribution systematic a for comparison with the literature<br />
data on ohain yielda. The following table give a the values of cumulative yields<br />
and ohain yields.<br />
TAHfi 1<br />
Cumulative Yialda of Ruthenium Isotopes lotope in the<br />
thermal neutron induoed fission of 253u, 233n. 235tf and<br />
Haas 233 U(y0 235 U(?S) "**&) Reference<br />
107 0.111+0.012 0.145 ±0.032 3.068 ± 0.264 This work<br />
0.13 ±0.01*<br />
1OS 0.077 ± 0.005 0.067 ± 0.017 2.005 ± 0.165 This work<br />
0.042 ± 0.002* 1.89 ± 0.05*<br />
109 - 0.034 ±0.004 1.088 + 0.98 Thia work<br />
0.027 ±0.003*<br />
* P. Pettwela, P. Sal Marmol, Z. Physik A. Z&, 359 (1975)<<br />
© J.K. Dickens, J.V. Mo Connell, K.J. Horthout, Kiol. Soi. Bngg. 21* 146 (1981).