US EPA

1573753 

Journal Article 

Measurement of thermal neutron capture cross-section and resonance integral for the Ho-165(n,gamma)Ho-166 reaction by the activation method 

Zolghadri, S; Yousefnia, H; Afarideh, H; Bahrami-Samani, Ali; Jalilian, AR; Ghannadi-Maragheh, M 

2013 

1 

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
ISSN: 0168-583X 

295 

94-98 

10.1016/j.nimb.2012.11.013 

WOS:000314480900018 

The thermal neutron capture cross-section and resonance integral for the Ho-165(n,gamma)Ho-166 reaction were measured experimentally by the activation method. Holmium oxide, manganese oxide and cobalt oxide powders, all dissolved in a mixture of hydrochloric acid and nitric acid, were irradiated within and without cadmium covers in the Tehran Research Reactor. The measured value of the thermal neutron cross-section relative to the Mn-55(n,gamma)Mn-56 and Co-59(n,gamma)Co-66 monitor reactions (with thermal neutron cross-section of 13.3 +/- 0.1b and 37.18 +/- 0.06b) was 58.6 +/- 1.8b. The result was in a good agreement with the most previously reported values. Also the resonance integral was determined relative to the Mn-55(n,gamma)Mn-56 and Co-59(n,gamma)Co-60 monitor reactions with the reference value of 14.0 +/- 0.3 and 75.9 +/- 2.0, respectively. The measured resonance integral of the Ho-165(n,gamma)Ho-166 reaction at the cadmium cut-off energy of 0.55 eV was 650 +/- 31. The result was measured with high precision and compared with other measurements in the literature. (C) 2012 Elsevier B.V. All rights reserved. 

Activation method; Ho-165(n,gamma)Ho-166; Resonance integral; Thermal neutron cross-section