https://doi.org/10.1140/epja/i2016-16345-1
Regular Article - Experimental Physics
Measurement of fission cross-section for the 232Th(n,f )141Ba reaction induced by neutrons around 14 MeV
1
School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, Gansu Province, China
2
Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, 621900, Mianyang, Sichuan Province, China
3
Engineering Research Center for Neutron Application, Ministry of Education, Lanzhou University, 730000, Lanzhou, Gansu Province, China
* e-mail: lanchl@lzu.edu.cn
Received:
24
July
2016
Accepted:
31
October
2016
Published online:
24
November
2016
The fission cross-section of the 232Th(n,f)141Ba reaction induced by neutrons around 14MeV was measured precisely with the neutron activation and off-line gamma-ray spectrometric technique. Neutron fluence was monitored on-line using the accompanying -particles from the 3H(2H,n)4He reaction, whereas the neutron energies were measured by the method of cross-section ratios of 90Zr(n,2n)89Zr to 93Nb(n,2n)92mNb reactions. The experimentally determined 232Th(n,f)141Ba reaction cross-sections were
mb at
MeV, 13.0±0.5 mb at
MeV and 13.3±0.5 mb at
MeV, respectively.
© SIF, Springer-Verlag Berlin Heidelberg, 2016