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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I. NUCLEAR FISSION<br />
MASS. ENERGY CORRELATIONS IN 4 He <strong>IND</strong>UCED FISSION OP 258 U<br />
AT MEDIUM ENERGIES<br />
R.K. CHOUDHURY, AIOK SAXENA, S.S. KAPOOR, D.M. HADKARNI,<br />
V.S. RAHAMURTHY and P.P.SINGH<br />
Bhabha Atonic Research Centre<br />
Trombay, Bombay 400083.<br />
The energy and mass distribution of fission fragments<br />
ill the fission of 238JJ induced by alphc. particles of<br />
boabarding energies of 32,40,43,56 MeY, were studied. The<br />
measurements were done by using two surface barrier detectors<br />
in the back-to-back geometry and the coincident pulse<br />
height information for each fission event was recorded on a<br />
aagnetic tape. The pulse height data were analyzed off<br />
line to obtain aass distributions and total kinetic energy<br />
distributions. The variation in the peak to valley ratio<br />
of the mass distribution was studied with increasing<br />
boabarding energy. The detailed correlations between<br />
the fragment mass (MJJ) and the total kinetic energy (<br />
were obtained* The width of the mass distribution,<br />
( © Kg) is found to decrease with increasing kinetic<br />
energy whereas, IL remains almost constant upto most<br />
probable kinetic energy of 174 MeY and then it decreases<br />
with E K. t The Implications of these results on the<br />
excitation energy dependence of the fission process will<br />
be discussed. Also from the present data the possibility<br />
of deducing, the first chance mass distribution at these<br />
energies will be discussed*