Performance of the Beijing pulsed variable-energy positron beam

doi:10.1016/j.apsusc.2008.05.183

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	Performance of the Beijing pulsed variable-energy positron beam
	Wang BY(王宝义); Ma YY(马雁云); Wang P(王平); Cao XZ(曹兴忠); Qin XB(秦秀波); Zhang Z(张哲); Yu RS(于润升); Wei L(魏龙); Wang, BY; Ma, YY; Zhang, Z; Yu, RS; Wang, P
	2008
发表期刊	APPLIED SURFACE SCIENCE (IF:3.387[JCR-2016],3.184[5-Year])
卷号	255 期号:1 页码:#REF!
通讯作者	Wang, BY (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型	Article; Proceedings Paper
摘要	In order to study the depth-dependent characteristics of open-volume defects in thin surface layers, the variable-energy positron lifetime spectroscopy (VEPLS) has been enabled by pulsing a continuous positron beam. The buncher is a quarter-wave coaxial resonator and the RF-signal is fed in by a coupling loop with a frequency of 149.89 MHz and the reflection factor of 0.05 measured by a Network Analyzer. Three synchronic signals with their phases and amplitudes adjusted independently are supplied for start signal of the positron lifetime measurement and the power signal by an electronic system. The stop signal is derived from a detector, a BaF(2) scintillator coupled to a photomultiplier-tube (Hamamatsu). The time resolution of 295 ps (FWHM) was achieved for a Kapton film and a Ti sample at positron energies in the range between 1 keV and 30 keV. (C) 2008 Elsevier B.V. All rights reserved.
关键词	VEPLS pulsing system time resolution
学科领域	Chemistry; Materials Science; Physics
DOI	10.1016/j.apsusc.2008.05.183
收录类别	SCI ; ADS
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000259726900031
ADS Bibcode	2008ApSS..255..119W
ADS URL	https://ui.adsabs.harvard.edu/abs/2008ApSS..255..119W
ADS引文	https://ui.adsabs.harvard.edu/abs/2008ApSS..255..119W/citations
引用统计	正在获取... 被引频次：16 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/226284
专题	多学科研究中心理论物理室
推荐引用方式 GB/T 7714	Wang BY,Ma YY,Wang P,et al. Performance of the Beijing pulsed variable-energy positron beam[J]. APPLIED SURFACE SCIENCE,2008,255(1):#REF!.
APA	王宝义.,马雁云.,王平.,曹兴忠.,秦秀波.,...&Wang, P.(2008).Performance of the Beijing pulsed variable-energy positron beam.APPLIED SURFACE SCIENCE,255(1),#REF!.
MLA	王宝义,et al."Performance of the Beijing pulsed variable-energy positron beam".APPLIED SURFACE SCIENCE 255.1(2008):#REF!.