Measurement of the total neutron cross-section and resonance parameters of molybdenum using pulsed neutrons generated by an electron linac

Khandaker, Mayeen Uddin and Namkung, W. and Wang, T.F. and Meaze, A. and Ko, I.S. and Rahman, M.S. and Kim, G.N. and Zhu, L.P. and Xia, H.H. and Zhou, Z.Y. and Oh, Y.D. and Kang, H. and Cho, M.H. (2008) Measurement of the total neutron cross-section and resonance parameters of molybdenum using pulsed neutrons generated by an electron linac. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 266 (4). pp. 561-569. ISSN 0168-583X

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Abstract

The neutron total cross-sections of molybdenum were measured in the neutron energy region from 0.01 eV to 200 eV by using the time-of-flight method at the Pohang Neutron Facility, which consists of an electron linear accelerator, a water-cooled tantalum target with a water moderator, and a 12-m long time-of-flight path. A Li-6-ZnS(Ag) scintillator with a diameter of 12.5 cm and a thickness of 1.6 cm was used as a neutron detector, and a high purity natural molybdenum metallic disc with a diameter of 6.2 cm and a thickness of 3 turn thickness was used for the neutron transmission measurement. Notch filters composed of Co, In, Cd were used to estimate the background level and to calculate the length of neutron flight path. In order to reduce the gamma-ray background from Bremsstrahlung and from neutron capture, we employed a neutron-gamma separation system based on their different pulse shapes. The present measurement was compared with the existing experimental and the evaluated data. The resonance parameters of Mo isotopes were extracted from the transmission by using the SAMMY code and were compared with other previous reported results. (C) 2007 Elsevier B.V. All rights reserved.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Neutron total cross-sections; Resonance parameters; Molybdenum; Time-of-flight method; Pohang neutron facility; Electron linac; Sammy fitting; Neutron-gamma separation; Facility
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 05 Jul 2013 09:48
Last Modified: 18 Mar 2019 09:08
URI: http://eprints.um.edu.my/id/eprint/8000

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