Neutron depth profiling system at CARR. (June 2019)

• Record Type: Journal Article
• Authors: Chanjuan, Tang; Caijin, Xiao; Yonggang, Yao; Cong, Shi; Xiangchun, Jin; Weixu, Yun; Xudong, Liu; Bangfa, Ni; Pingsheng, Wang
• Is Part Of: Applied radiation and isotopes. Volume 148(2019:Jun.)
• Page Start: 102
• Page End: 107
• Publication Date: 2019-06
• Subjects: Neutron depth profiling -- CARR -- Near-surface analysis; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2019.02.003
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: A neutron depth profiling (NDP) device was developed on China advanced research reactor (CARR) of China Institute of Atomic Energy (CIAE). The CARR-NDP device uses cold neutron beams transmitted by a neutron guide from the cold neutron source of CARR, and it is composed of a neutron beam collimator, and a vacuum target chamber containing a beam stopper and a detection system. The neutron flux at 1 m from the end of neutron guide is about 4.8 × 10 8 n cm −2 s −1 under operating power of 15 MW. A standard reference material SRM-2137 sample and a multilayer film sample were utilized to verify the performances of the CARR-NDP device. Highlights: A new neutron depth profiling system is developed on China advanced research reactor of China Institute of Atomic Energy. A SRM-2137 sample and a multilayer film sample (Li-Cu-Li) are utilized to verify the performances of the new system. The results agree well with the reference values and the maximum deviation is less than 5%.