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Published: 2017-09-30
Abstract Views: 142
Views PDF: 45
DOI: https://doi.org/10.53747/jnst.v7i3.104
Issue
Vol. 7 No. 3 (2017)
Section
Articles
How to Cite
Chu, V. L., Nguyen, H. Q., Nguyen, N. Q., & Le, N. T. (2017). Calculation of response functions for cylindrical nested neutron spectrometer. Nuclear Science and Technology, 7(3), 52-56. https://doi.org/10.53747/jnst.v7i3.104

Calculation of response functions for cylindrical nested neutron spectrometer

Chu Vu Long1, Nguyen Huu Quyet1, Nguyen Ngoc Quynh1, Le Ngoc Thiem1
1 Institute for Nuclear Science and Technology. 179, Hoang Quoc Viet st., Cau Giay dist., Ha Noi, Vietnam

Main Article Content

Abstract

In a recent work, a new neutron spectrometer, namely Cylindrical Nested Neutron Spectrometer (CNNS). It works under the same principles as a Bonner Sphere Spectrometer (BSS), except that different amounts of moderator around a thermal neutron detector are configured by adding or removing cylindrical shells. The CNNS consists of a 4mm x 4mm 6LiI(Eu) scintillator crystal and nested cylindrical polyethylene moderators. The objective of this paper is describing the use of MCNPX code for determining a optimal ratio between height and diameter of the moderators in order to remain isotropic angular response to neutrons like BSS and determining of response functions for moderators of different diameters at 104 energy points from 0.001 eV to 19.95 MeV.

Article Details

Keywords

cylindrical nested neutron spectrometer, response function, MCNPX code

References

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