title: Activity determination of (41)Ar using efficiency extrapolation method and 4πβ(PS)-4πγ(NaI) coincidence system.
abstract: Noble gas (41)Ar was measured with a 4πβ-4πγ coincidence system, in which gamma- and beta-rays were respectively detected with a well-type NaI(Tl) and plastic scintillator (PS) detector. The activity of (41)Ar was determined from an efficiency extrapolation method, in which the beta detector efficiency was varied by electronic discrimination using the software developed under Visual basic. In addition, high resolution gamma spectroscopy with HPGe detector was also used for activity determination of (41)Ar, and the result was satisfactory in agreement with that obtain by the efficiency extrapolation method. This work demonstrated that the activity of (41)Ar can be accurately measured by efficiency extrapolation method.
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China. Electronic address: 13572916923@163.com.
authors.forename: Feng
authors.initials: F
authors.lastname: Xie
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China.
authors.forename: Xuesong
authors.initials: X
authors.lastname: Li
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China.
authors.forename: Yihua
authors.initials: Y
authors.lastname: Dai
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China.
authors.forename: Wengang
authors.initials: W
authors.lastname: Jiang
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China.
authors.forename: Xiaobing
authors.initials: X
authors.lastname: He
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China.
authors.forename: Gongshuo
authors.initials: G
authors.lastname: Yu
authors.affiliation: Northwest Institute of Nuclear Technology, PO Box 69-14, Xi'an 710024, PR China.
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Ni
keywords: 4πβ–4πγ coincidence system; Argon-41; Efficiency extrapolation method; HPGe detector