Study of gamma irradiation effect on positron annihilation mechanism in PFA

	Study of gamma irradiation effect on positron annihilation mechanism in PFA
	Yang J(杨静); Li ZX(李卓昕); Zhao BZ(赵博震); Yang, J; Li, ZX; Zhao, BZ; Zhang, P; Lu, EY; Zhang, J; Yuan, DQ
刊名	CHEMICAL PHYSICS LETTERS
	2014
卷号	597 页码:26-29
英文摘要	Gamma irradiation effect on annihilation characteristics of positronium and free positron in tetrafluoroethylene-perluoro (alkoxy vinyl ether) copolymer (PFA) were studied independently by age momentum correlation (AMOC) and the correlation between Doppler broadening S parameter and o-Ps fraction (S-Io-Ps correlation). AMOC results revealed decreases in S parameter of o-Ps, owing to accumulation of polar atoms around free volume. S-Io-Ps correlation indicated a reduced intrinsic S parameter of free positron in irradiated PFA, which was caused by enhanced positron trapping on polar atoms due to densification of local segments and variation in the elemental environment around free volumes. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	Chemistry; Physics
收录类别	SCI
WOS记录号	WOS:000333459700005
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224884]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Yang J,Li ZX,Zhao BZ,et al. Study of gamma irradiation effect on positron annihilation mechanism in PFA[J]. CHEMICAL PHYSICS LETTERS,2014,597:26-29.
APA	杨静.,李卓昕.,赵博震.,Yang, J.,Li, ZX.,...&王宝义.(2014).Study of gamma irradiation effect on positron annihilation mechanism in PFA.CHEMICAL PHYSICS LETTERS,597,26-29.
MLA	杨静,et al."Study of gamma irradiation effect on positron annihilation mechanism in PFA".CHEMICAL PHYSICS LETTERS 597(2014):26-29.