Measurement of photofission excitation of 237NP

被引：2
|
作者：
Rajaprakash, H. G. [1 ,2 ]
Sanjeev, Ganesh [1 ]
Kumar, K. B. Vijay [1 ]
Siddappa, K. [1 ]
Nayak, B. K. [3 ]
Saxena, A. [3 ]
机构：
[1] Mangalore Univ, Dept Studies Phys, Microtron Ctr, Mangalagangothri 574199, Karnataka, India
[2] JNNCE, Dept Phys, Shimoga 577204, Karnataka, India
[3] Bhabha Atom Res Ctr, NPD, Bombay 400085, Maharashtra, India
来源：
RADIATION MEASUREMENTS | 2011年 / 46卷 / 04期
关键词：
Fission; Bremsstrahlung:Np-237; (gamma; F); Emax; =7.4-9.2; MeV; Fission fragment angular distributions; Photon difference method; Solid state nuclear track detector; VARIABLE-ENERGY MICROTRON; ANGULAR-DISTRIBUTION; CROSS-SECTIONS; FISSION; BREMSSTRAHLUNG; FRAGMENTS; BARRIER; NP-237;
D O I：
10.1016/j.radmeas.2011.01.024
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The angular distribution of Np-237 fission fragments was measured over the energy range 7.4 MeV -9.2 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 10(10) 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 Hugenholtz-Van Hove theorem. The results are in good agreement with the prediction of the RIPL-1 barrier parameter and analytical fission barrier formula. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：413 / 417
页数：5
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