Exploring high-energy doubly excited states of NH by dissociative recombination of NH+

doi:10.1088/0953-4075/47/3/035201

	Exploring high-energy doubly excited states of NH by dissociative recombination of NH+
	Yang, B.1,2,3; Novotny, O.2,4; Krantz, C.2; Buhr, H.5; Mendes, M.2; Nordhorn, C.2; Geppert, W. D.6; Grieser, M.2; Repnow, R.2; Berg, M.2
刊名	JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
	2014-02-14
卷号	47
关键词	Dissociative Recombination Doubly Excited Molecular States Molecular Collisions
ISSN号	0953-4075
DOI	10.1088/0953-4075/47/3/035201
文献子类	Article
英文摘要	We have investigated electron capture by NH+ resulting in dissociative recombination (DR). The impact energies studied of similar to 4-12 eV extend over the range below the two lowest predicted NH+ dissociative states in the Franck-Condon (FC) region of the ion. Our focus has been on the final state populations of the resulting N and H atoms. The neutral DR fragments are detected downstream of a merged electron and ion beam interaction zone in the TSR storage ring, which is located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. Transverse fragment distances were measured on a recently developed high count-rate imaging detector. The distance distributions enabled a detailed tracking of the final state populations as a function of the electron collision energy. These can be correlated with doubly excited neutral states in the FC region of the ion. At low electron energy of similar to 5 eV, the atomic product final levels are nitrogen Rydberg states together with ground-state hydrogen. In a small electron energy interval near 7 eV, a significant part of the final state population forms hydrogen Rydberg atoms with nitrogen atoms in the first excited (D-2) term, showing the effect of Rydberg doubly excited states below the predicted 2(2)Pi ionic potential. The distance distributions above similar to 10 eV are compatible with nitrogen Rydberg states correlating to the doubly excited Rydberg state manifold below the ionic 2(4) Sigma(-) level.
资助项目	COST Action[CM0805]
WOS关键词	ELECTRON ; FACILITY ; IONS
WOS研究方向	Optics ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000330215600006
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/49781]
专题	中国科学院近代物理研究所
通讯作者	Yang, B.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA 5.Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel 6.Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden
推荐引用方式 GB/T 7714	Yang, B.,Novotny, O.,Krantz, C.,et al. Exploring high-energy doubly excited states of NH by dissociative recombination of NH+[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2014,47.
APA	Yang, B..,Novotny, O..,Krantz, C..,Buhr, H..,Mendes, M..,...&Wolf, A..(2014).Exploring high-energy doubly excited states of NH by dissociative recombination of NH+.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,47.
MLA	Yang, B.,et al."Exploring high-energy doubly excited states of NH by dissociative recombination of NH+".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 47(2014).