Measurement of neutron cross sections and resonance parameters of ^169Tm below 100 eV

• Published in: Chinese physics C Vol. 34; no. 2; pp. 177 - 181
• Main Author: 王文明 李霞 赵志祥 周祖英 于洪伟 吴海成 魏义祥 T．F．Wang G．N．Kim M．W．Lee K．S．Kim M．H.Cho I．S．Ko W．Namkung
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.02.2010
• Subjects: 中子截面; 共振参数; 冷却水; 电子直线加速器; 肠病毒; 能量范围; 飞行时间法
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/34/2/004

The neutron total cross-sections of thulium （^169Tm） 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 time of flight path, Two thulium plates with different thicknesses were 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 a new set of resonance parameters of ^169Tm isotope was obtained from the transmission rate by using the SAMMY code, with a comparison with the recommended parameters by Mughabghab.