Multiparameter study of 1H, 3H and 4He in fast neutron induced fission of 235U |
| |
Authors: | SCL Sharma GK Mehta RK Choudhury DM Nadkarni SS Kapoor |
| |
Institution: | Physics Department, Indian Institute of Technology, Kanpur, Kanpur 208 016, India;Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Bombay 400 085, India |
| |
Abstract: | 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 () and the standard deviation (σE) of the energy spectra of different light charged particles with incident neutron energy was observed, although 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. |
| |
Keywords: | Nuclear reactions fission |
本文献已被 ScienceDirect 等数据库收录! |
|