Characteristics of Filtered Neutron Beam Energy Spectra at Dalat Reactor

Tran Tuan Anh, Pham Ngoc Son, Vuong Huu Tan, Pham Dinh Khang, Phu Chi Hoa

Nuclear Research Institute, Dalat, Vietnam.
The University of Dalat, Dalat, Vietnam.
Vietnam Agency for Radiation and Nuclear Safety, Hanoi, Vietnam.

DOI: 10.4236/wjnst.2014.42015                

Abstract

Filtered neutron technique was applied for producing quasi-monoenergetic neutron beams of 24 keV, 54 keV, 133 keV and 148 keV at the horizontal neutron channel No. 4 of the Dalat Nuclear Research Reactor. The study on physical characteristics of these beam lines has been carried out for efficient applications in neutron capture experiments. The filtered neutron spectrum of each beam has been simulated by Monte-Carlo method and experimentally measured by a gas-filled protonrecoil spectrometer. The neutron fluxes of these filtered beams were measured by the activation technique with standard foils of ¹⁹⁷Au, using a high efficient HPGe digital gamma-ray spectrometer.

Keywords

Neutron Filter, Proton-Recoil

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Simpson, O.D. and Miller, L.G. (1968) A Technique to Measure Neutron cross Sections in the Low keV Energy Region. Nuclear Instruments and Methods, 61, 245-250. http://dx.doi.org/10.1016/0029-554X(68)90236-X
[2]	General Atomic (1961) TRIGA Mark II Reactor General Specifications and Description. GA-2627, Division of General Dynamics, USA.
[3]	Gritzay, O.O., Kolotyi, V.V. and Kaltchenko, O.I. (2001) Neutron Filters at Kyiv Research Reactor. National Academy of Sciences of Ukraine, Institute for Nuclear Research, Preprint KINR-01-6, Kiev.
[4]	X-5 Monte Carlo Team (2005) MCNP—A General N-Particle Transport Code, Version 5. Volume I: Overview and Theory, LA-UR-03-1987, Los Alamos National Laboratory, USA.
[5]	Verbinski, V.V. and Giovanni, R. (1974) Proportional Counter Characteristics and Applications to Reactor Neutron Spectrometry. Nuclear Instruments and Methods, 114, 205-231. http://dx.doi.org/10.1016/0029-554X(74)90536-9