Multiparameter study of 1H, 3H and 4He in fast neutron induced fission of 235U

Sharma, S. C. L. ; Mehta, G. K. ; Choudhury, R. K. ; Nadkarni, D. M. ; Kapoor, S. S. (1981) Multiparameter study of 1H, 3H and 4He in fast neutron induced fission of 235U Nuclear Physics A, 355 (1). pp. 13-24. ISSN 0375-9474

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The emission probabilities per fission of α-particles, tritons and protons have been measured in fast neutron induced fission of 235U. The measurements were carried out at neutron energies of 120, 180, 230 and 550 keV. AΔE-E semiconductor detector telescope was used to identify different light charged particles and the fission fragments were detected with an ionization chamber. The three-parameter data corresponding to the pulse heights from the ΔE-E detectors and the ion-chamber were recorded event by event on magnetic tape and were analyzed off-line by computer. No significant variation in the most probable energy (E̅) and the standard deviation (σE) of the energy spectra of different light charged particles with incident neutron energy was observed, although E̅α was seen to have a slightly higher value beyond En=230 keV. The yield of α-particles in fission induced by neutrons of En ~200 keV was found to be higher by about 20 % than that in thermal neutron induced fission. The yields of tritons and protons were found to increase significantly with neutron energy.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Nuclear Reactions; Fission
ID Code:16983
Deposited On:16 Nov 2010 13:12
Last Modified:04 Jun 2011 05:46

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