Concerted elimination of Br+2 resulting from the Coulomb explosion of 1,2-dibromoethane in an intense femtosecond laser field

被引：10

作者：

Wu, Hua ^{[1
,2
]}

Yang, Yan ^{[3
]}

Sun, Shengzhi ^{[1
,2
]}

Zhang, Jian ^{[1
,2
]}

Deng, Li ^{[1
,2
]}

Zhang, Shian ^{[1
,2
]}

Jia, Tianqing ^{[1
,2
]}

Wang, Zugeng ^{[1
,2
]}

Sun, Zhenrong ^{[1
,2
]}

机构：

[1] E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[2] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2014年 / 607卷

关键词：

PHOTOINDUCED MOLECULAR DETACHMENT; DOWN ABSORPTION-SPECTROSCOPY; DISSOCIATIVE IONIZATION; HALOGENATED ALKANES; ATMOSPHERIC BROMINE; DYNAMICS; NM; PHOTOLYSIS; BROMOFORM; DENSITY;

D O I：

10.1016/j.cplett.2014.05.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Concerted elimination pathway leading to Br-2(+) and C2H4+ from 1,2-dibromoethane molecule has been investigated in 800 nm femtosecond laser field by dc-slice imaging technology. The kinetic energy release and angular distributions of Br-2(+) and C2H4+ demonstrate that Br-2(+) results from the two-body Coulomb explosion of the doubly charged parent ion. Ab initio calculations show that the doubly charged precursor overcomes a small energy barrier (0.18 eV) and then dissociates into Br-2(+) and C2H4+ through a synchronous concerted elimination mechanism. Moreover, the relative yield of the Br-2(+) channel is obtained, and it remains about 3.4% when the laser intensity exceeds 1.0 x 10(14) W/cm(2). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：70 / 74

页数：5

共 48 条

[41] Coulomb explosion dynamics of N2O in intense laser-field: Identification of new two-body and three-body fragmentation pathways
Akiyoshi Hishikawa
Atsushi Iwamae
Kennosuke Hoshina
Mitsuhiko Kono
Kaoru Yamanouchi
Research on Chemical Intermediates, 1998, 24 : 765 - 784
[42] Coulomb explosion dynamics of N2O in intense laser-field:: Identification of new two-body and three-body fragmentation pathways
Hishikawa, A
Iwamae, A
Hoshina, K
Kono, M
Yamanouchi, K
RESEARCH ON CHEMICAL INTERMEDIATES, 1998, 24 (07) : 765 - 784
[43] Photofragmentation of Na2+ in intense femtosecond laser fields:: From photodissociation on light-induced potentials to field ionization
Assion, A
Baumert, T
Weichmann, U
Gerber, G
PHYSICAL REVIEW LETTERS, 2001, 86 (25) : 5695 - 5698
[44] EVIDENCE FROM TRAPPING FOR THE EXISTENCE OF THE PHOSPHINOPHOSPHINIDENE (ME3C)2P-P IN THE REACTION OF [(ME3C)2P]2PLI WITH 1,2-DIBROMOETHANE
FRITZ, G
VAAHS, T
FLEISCHER, H
MATERN, E
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1989, 570 (03): : 54 - 66
[45] IONIZATION OF A 1-D MODEL OF H2+ FROM DIFFERENT STATES IN INTENSE LASER FIELD
Sabzyan, H.
Ebadi, H.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE, 2009, 33 (A1): : 87 - 102
[46] CHEMICAL LASERS PRODUCED FROM O(1D) ATOM REACTIONS .2. NEW HYDROGEN FLUORIDE ELIMINATION LASER FROM O(1D)+CHNF4-N (N=1,2, AND 3)REACTIONS
LIN, MC
JOURNAL OF PHYSICAL CHEMISTRY, 1971, 75 (23): : 3642 - &
[47] Determination of the branching ratios of CaBr(A2Π1/2,3/2,B2Σ+) resulting from the reaction of Ca[4s4p(3PJ)] with CH3Br by time-resolved atomic emission and molecular chemiluminescence following pulsed dye-laser excitation of atomic calcium
Husain, D
Geng, J
Castaño, F
Rayo, MNS
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 2001, 215 : 547 - 560
[48] Determination of the branching ratios of CaBr(A2Π1/2,3/2, B2Σ+) resulting from the reaction of Ca[4s4p3PJ0] with CH3Br by time-resolved atomic emission and molecular chemiluminescence following pulsed dye-laser excitation of atomic calcium
Husain, D.
Geng, J.
Castaño, F.
Sanchez Rayo, M.N.
Zeitschrift fur Physikalische Chemie, 2001, 215 (05): : 547 - 560

← 1 2 3 4 5 →