BARC/PUB/2011/0517

 
 

Measurement of photofission excitation of 237NP

 
     
 
Author(s)

Rajaprakash, H. G.; Sanjeev, G.; Kumar, K. B. V.; Siddappa, K.; Nayak, B. K.; Saxena, A.

Source

Radiation Measurements, 2011. Vol. 46 (4): pp. 413-417

ABSTRACT

The angular distribution of 237Np fission fragments was measured over the energy range 7.4 MeV e9.2 MeV in steps of 0.4 MeV of bremsstrahlung radiation. Lexan polycarbonate films (SSNTD) were used to detect the fission fragments. The photon intensity from the Microtron accelerator at a distance of 15 cm from the bremsstrahlung converter (tantalum target) facility was estimated to be 1010 photons s-1 using the code EGS-4. The photofission cross-section was calculated using the angular distribution of fission fragments and the results were compared with those obtained using the code EMPIRE-II and various barrier parameters of the RIPL-1, RIPL-2 libraries and with the new analytical fission barrier formula based on the HugenholtzeVan Hove theorem. The results are in good agreement with the prediction of the RIPL-1 barrier parameter and analytical fission barrier formula.

 
 
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