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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ANGULAR DISTRIBUTION OF POLAR LIGHT CHARGED PARTICLES IN<br />
THERMAL NEUTRON-<strong>IND</strong>UCBD FISSION OP 235<br />
M.M. ahanna, A.K. Sinha and G.K.. Mehta<br />
Indian Institute of Technology, Kanpur-208016,<strong>IND</strong>IA<br />
D.M. Nadfcarnl<br />
Bhabha Atomic Research Centre, Bombay-400085, <strong>IND</strong>IA*<br />
The angular distribution of polar ligfc* cLar^ed particles<br />
(LCPs) em it tad In thermal neutron-induced fission of 2"u has been<br />
measured. The method of detection of polar LCPs consists of using<br />
a pair of lonlzation chamber with a multi-hole collimator as a<br />
common cathode. The ionizatlon chambers detect the fission<br />
fragments related to polar and equatorial LGPs, the LCPs being<br />
detected by a semiconductor AB-£ telescope. The collimator<br />
arrangement thus separates tha polar and equatorial events. Using<br />
different collimation for polar LCP region of angular distribution*<br />
the yields of polar protons, tritons and alpha particles were<br />
measured. Using Mote Carlo simulation far the detection system*<br />
o(0J fcr the angular distribution of polar protons, tritons and<br />
alpha particles were determined (refer to table).<br />
Table<br />
The width of the angular distribution of polar LCPs.<br />
LCPs a(&)<br />
Alpha particle (28.0±7.0)°<br />
Proton (13.0+6.0)°<br />
Triton (25.0+15.0)°<br />
The errors Indicated in the table are statistical only. The<br />
angular distribution of polar protons was found to be narrow<br />
compared to a wide angular distribution of polar tritons and alpha<br />
particles as indicated in the table.
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