Measurements of the neutron total cross-sections of tantalum by using pulsed neutrons based on an electron linac

Yoo, K.J. and Lee, Y.Y. and Meaze, A. and Devan, K. and Khandaker, Mayeen Uddin and Kim, G. and Son, D. and Lee, Y.S. and Kang, H. and Cho, A.H. and Ko, I.S. and Namkung, W. and Kim, Y.A. (2006) Measurements of the neutron total cross-sections of tantalum by using pulsed neutrons based on an electron linac. Journal of the Korean Physical Society, 48 (4). pp. 827-834. ISSN 0374-4884

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Abstract

The neutron total cross-sections of tantalum (Ta-181) were measured in the neutron energy region from 0.01 eV to 100 eV by using the time-of-flight method at the Pohang Neutron Facility, which consists of an electron linac, 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 natural tantalum metal plate, 10 x 10 cm 2 in area by 0.45 mm in thickness, was used for the neutron transmission measurement. The background level was determined by using a notch-filter of Co, In, and Cd sheets. The present measurement was compared with the previous ones and the evaluated data in ENDF/B-VI.8. The resonance parameters of Ta-181 isotope were obtained from the transmission ratio by using the SAMMY code, which utilizes both Doppler and resolution broadening effects and Bayes' generalized least squares technique.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Electron linac; Pulsed neutrons; Total cross-sections; Tantalum; Resonance parameters; Sammy; Facility
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 08 Jul 2013 03:22
Last Modified: 18 Mar 2019 08:39
URI: http://eprints.um.edu.my/id/eprint/7987

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