Measurement of thermal neutron cross-section and resonance integral for the Ho-165(n,gamma)Ho-166g reaction using electron linac-based neutron source
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SCOPUS
- Title
- Measurement of thermal neutron cross-section and resonance integral for the Ho-165(n,gamma)Ho-166g reaction using electron linac-based neutron source
- Authors
- Van, DN; Duc Khue Pham; Tien Thanh Kim; Kim, G; Manwoo Lee,; Kyung Sook Kim; Heung-Sik Kang; Moo-Hyun Cho; Ko, IS; Won Namkung
- Date Issued
- 2011-01-15
- Publisher
- Elsevier
- Abstract
- The thermal neutron cross-section and the resonance integral of the Ho-165(n,gamma)Ho-166g reaction have been measured by the activation method using a Au-197(n,gamma)Au-198 monitor reaction as a single comparator. The high-purity natural Ho and Au foils with and without a cadmium shield case of 0.5 mm thickness were irradiated in a neutron field of the Pohang neutron facility. The induced activities in the activated foils were measured with a calibrated p-type high-purity Ge detector. The correction factors for the gamma-ray attenuation (F-g), the thermal neutron self-shielding (G(th)), the resonance neutron self-shielding (G(epi)) effects, and the epithermal neutron spectrum shape factor (alpha) were taken into account. The thermal neutron cross-section for the Ho-165(n,gamma)Ho-166g reaction has been determined to be 59.7 +/- 2.5 barn, relative to the reference value of 98.65 +/- 0.09 barn for the Au-197(n,gamma)Au-198 reaction. By assuming the cadmium cut-off energy of 0.55 eV, the resonance integral for the Ho-165(n,gamma)Ho-166g reaction is 671 +/- 47 barn, which is determined relative to the reference value of 1550 +/- 28 barn for the Au-197(n,gamma)Au-198 reaction. The present results are, in general, good agreement with most of the previously reported data within uncertainty limits. (C) 2010 Elsevier B.V. All rights reserved.
- Keywords
- Thermal neutron cross-section; Resonance integral; Ho-165(n,gamma)Ho-166g; Au-197(n,gamma)Au-198; 65 MeV electron linac; Activation method; SELF-SHIELDING FACTORS; NUCLEAR-DATA; ACTIVATION ANALYSIS; ALPHA-DETERMINATION; FACILITY; SPECTRUM; COMPILATION; ACCURACY; NUCLIDES; MONITOR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/108044
- DOI
- 10.1016/J.NIMB.2010.11.013
- ISSN
- 0168-583X
- Article Type
- Article
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, vol. 269, no. 2, page. 159 - 166, 2011-01-15
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