Experimental observations of s-p coupling in copper dimer anions

	Experimental observations of s-p coupling in copper dimer anions
	Liu, Benkang; Wang, Yanqiu; Wang, Li
刊名	physical review a
	2013-09-11
卷号	88 期号:3 页码:033413
ISSN号	1050-2947
通讯作者	王利
产权排序	待补充
合作状况	英
英文摘要	the photoelectron velocity-map image technique was employed to examine the one-photon detachment of cu monomer and dimer anions using a linearly polarized infrared femtosecond laser. while the photoelectron angular distribution (pad) in a single-photon detachment experiment of cu- shows no dependence on photon energy, the dimer anion pad does show a strong dependence on photon energy. as the laser wavelength increases from 532 to 817 nm, the photoelectron angular distributions of the main one-photon detachment channel of the prominent detachment channel of cu-2(-) changes its direction from parallel to the direction of polarization for the 532-nm laser to perpendicular to the direction of polarization for the 817-nm laser. based upon a numerical analysis of the anisotropy parameters, the relative contributions of the s, p, and d orbitals are obtained. the fully occupied d orbitals contribute less to the detachment amplitude. the contribution of the p waves to the detachment amplitude increases with the photon energy, while that of s waves decreases, which is in agreement with the prediction of the wigner threshold law. the relative contributions of the different partial waves, s and p, to the detachment amplitude are altered by the excess energy of the detached electron, resulting in the determined shape of the photoelectron angular distributions. our one-photon photodetachment experiments on the energy-dependent angular distributions of the copper anionic dimers indicate that s-p coupling is important to the photodetachment of copper dimer anions, especially at increased photon energies.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	optics ; physics, atomic, molecular & chemical
研究领域[WOS]	optics ; physics
关键词[WOS]	electronic shell structure ; small aluminum clusters ; simple metal-clusters ; angular-distributions ; negative-ions ; photoelectron-spectroscopy ; cross-sections ; jellium model ; photodetachment ; superatoms
收录类别	SCI
资助信息	1，1
原文出处	033413
语种	英语
WOS记录号	WOS:000324234400007
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119105]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Benkang,Wang, Yanqiu,Wang, Li. Experimental observations of s-p coupling in copper dimer anions[J]. physical review a,2013,88(3):033413.
APA	Liu, Benkang,Wang, Yanqiu,&Wang, Li.(2013).Experimental observations of s-p coupling in copper dimer anions.physical review a,88(3),033413.
MLA	Liu, Benkang,et al."Experimental observations of s-p coupling in copper dimer anions".physical review a 88.3(2013):033413.