DISSOCIATIVE RECOMBINATION MEASUREMENTS OF NH+ USING AN ION STORAGE RING

doi:10.1088/0004-637X/792/2/132

	DISSOCIATIVE RECOMBINATION MEASUREMENTS OF NH+ USING AN ION STORAGE RING
	Novotny, O.1; Berg, M.2; Bing, D.2; Buhr, H.2; Geppert, W.3; Grieser, M.2; Grussie, F.2; Krantz, C.2; Mendes, M. B.2; Nordhorn, C.2
刊名	ASTROPHYSICAL JOURNAL
	2014-09-10
卷号	792
关键词	Astrochemistry Ism: Clouds Ism: Molecules Methods: Laboratory: Molecular Molecular Data Molecular Processes
ISSN号	0004-637X
DOI	10.1088/0004-637X/792/2/132
文献子类	Article
英文摘要	We have investigated dissociative recombination (DR) of NH+ with electrons using a merged beams configuration at the TSR heavy-ion storage ring located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. We present our measured absolute merged-beams recombination rate coefficient for collision energies from 0 to 12 eV. From these data, we have extracted a cross section, which we have transformed to a plasma rate coefficient for the collisional plasma temperature range from T-p1 = 10 to 18,000 K. We show that the NH+ DR rate coefficient data in current astrochemical models are underestimated by up to a factor of approximately nine. Our new data will result in predicted NH+ abundances lower than those calculated by present models. This is in agreement with the sensitivity limits of all observations attempting to detect NH+ in interstellar clouds.
资助项目	Joint Funds of the National Natural Science Foundation of China[U1332206]
WOS关键词	HIGH-RESOLUTION ; NITROGEN HYDRIDES ; HERSCHEL/HIFI OBSERVATIONS ; INTERSTELLAR NH ; G10.6-0.4 W31C ; MOLECULAR-IONS ; AB-INITIO ; STATES ; CHEMISTRY ; BEAM
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000341172200050
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/49453]
专题	中国科学院近代物理研究所
通讯作者	Novotny, O.
作者单位	1.Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA 2.Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany 3.Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden 4.Weizmann Inst Sci, Fac Phys, IL-76100 Rehovot, Israel 5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Novotny, O.,Berg, M.,Bing, D.,et al. DISSOCIATIVE RECOMBINATION MEASUREMENTS OF NH+ USING AN ION STORAGE RING[J]. ASTROPHYSICAL JOURNAL,2014,792.
APA	Novotny, O..,Berg, M..,Bing, D..,Buhr, H..,Geppert, W..,...&Savin, D. W..(2014).DISSOCIATIVE RECOMBINATION MEASUREMENTS OF NH+ USING AN ION STORAGE RING.ASTROPHYSICAL JOURNAL,792.
MLA	Novotny, O.,et al."DISSOCIATIVE RECOMBINATION MEASUREMENTS OF NH+ USING AN ION STORAGE RING".ASTROPHYSICAL JOURNAL 792(2014).