EPJ Web Conf.
Volume 146, 2017ND 2016: International Conference on Nuclear Data for Science and Technology
|Number of page(s)||3|
|Section||Nuclear Reaction Measurements|
|Published online||13 September 2017|
Measurements of cross sections for the 209Bi(n, 4n) reaction by using high energy neutrons with continuous energy spectra
1 Department of Energy Science, Sungkyunkwan University, Suwon, Korea
2 Department of Physics, Sungkyunkwan University, Suwon, Korea
3 Department of Physics, Soongsil University, Seoul, Korea
4 Department of Physics, S. P. Pune University, Pune, India
a e-mail: email@example.com
Published online: 13 September 2017
We measured 209Bi(n, 4n) cross sections at neutron energies En = 29.8 ± 1.8 MeV and En = 34.8 ± 1.8 MeV. Bismuth oxide samples were irradiated with the neutrons produced by impinging 30, 35 and 40 MeV proton beams on a 1.05 cm thick beryllium target, where the proton beams were from the MC-50 Cyclotron of Korea Institute of Radiological Medical Sciences (KIRAMS). The neutron flux for each proton beam energy Ep, ΦEp(En), has a broad spectrum with respect to En. By taking the difference in the neutron fluxes, the difference spectra, Φ40(En) −Φ35(En) and Φ35(En) −Φ30(En), are obatined and found to be peaked at En = 29.8 and 34.8 MeV, respectively, with a width of about 3.6 MeV. By making use of this observation and employing the TENDL-2009 library we could extract the 209Bi(n, 4n)206Bi cross sections at the aforementioned neutron energies.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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