Generation of multi-charge carbon ions in laser-induced ionization of benzene under intense nanosecond laser fields

被引：9

作者：

Kong, XL ^{[1
]}

Luo, XL ^{[1
]}

Zhang, XY ^{[1
]}

Niu, DM ^{[1
]}

Zhang, SD ^{[1
]}

Kan, RF ^{[1
]}

Pei, KM ^{[1
]}

Li, YM ^{[1
]}

Liu, Y ^{[1
]}

Li, HY ^{[1
]}

机构：

[1] Chinese Acad Sci, Lab Environm Spect, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2003年 / 19卷 / 05期

关键词：

benzene; nanosecond laser; multi-charge ions; Coulomb explosion;

D O I：

10.3866/PKU.WHXB20030519

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：

The photoionization of benzene seeded in He, N-2, Ar gases by an intense 25 ns Nd-YAG 532 nm. laser has been studied by time-of-flight mass spectrometry. At the laser intensity about 10(10) similar to 10(11) W . cm(-2), strong multi-charged ions Cq+ (q = 1 similar to 3) appeared in the mass spectra when Ar was used as carrier gas. From the peak splitting, the most probable kinetic energies of C2+ and C3+ are calculated to be 12.9 eV and 37.5 eV, respectively. From the experimental results of changing the He, N-2, Ar carrier gases, their pressure and the laser intensity, we can draw the conclusion that those multi-charge ions come from the Coulomb explosion of benzene cluster ions.

引用

页码：469 / 473

页数：5

共 16 条

[1] Covariance mapping of ammonia clusters: Evidence of the connectiveness of clusters with Coulombic explosion
Card, DA
Folmer, DE
Sato, S
Buzza, SA
Castleman, AW
[J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (19): : 3417 - 3423
[2] Dynamics of Coulomb explosion and kinetic energy release in clusters of heterocyclic compounds
Card, DA
Wisniewski, ES
Folmer, DE
Castleman, AW
[J]. JOURNAL OF CHEMICAL PHYSICS, 2002, 116 (09): : 3554 - 3567
[3] Subpicosecond ionization and dissociation of benzene and cyclic alkanes at 800 and 400 nm
Castillejo, M
Couris, S
Koudoumas, E
Martin, M
[J]. CHEMICAL PHYSICS LETTERS, 1998, 289 (3-4) : 303 - 310
[4] Ionization and fragmentation of aromatic and single-bonded hydrocarbons with 50 fs laser pulses at 800 nm
Castillejo, M
Couris, S
Koudoumas, E
Martín, M
[J]. CHEMICAL PHYSICS LETTERS, 1999, 308 (5-6) : 373 - 380
[5] Photoionization/dissociation of alkyl substituted benzene molecules using intense near-infrared radiation
DeWitt, MJ
Peters, DW
Levis, RJ
[J]. CHEMICAL PHYSICS, 1997, 218 (1-2) : 211 - 223
[6] Femtosecond laser interactions with methyl iodide clusters. I. Coulomb explosion at 795 nm
Ford, JV
Zhong, Q
Poth, L
Castleman, AW
[J]. JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (13): : 6257 - 6267
[7] Multiply charged ions from aromatic molecules following irradiation in intense laser fields
Ledingham, KWD
Smith, DJ
Singhal, RP
McCanny, T
Graham, P
Kilic, HS
Peng, WX
Langley, AJ
Taday, PF
Kosmidis, C
[J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1999, 103 (16): : 2952 - 2963
[8] Behavior of polyatomic molecules in intense infrared laser beams
Ledingham, KWD
Singhal, RP
Smith, DJ
McCanny, T
Graham, P
Kilic, HS
Peng, WX
Wang, SL
Langley, AJ
Taday, PF
Kosmidis, C
[J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1998, 102 (18): : 3002 - 3005
[9] LASER-INDUCED MULTI-PHOTON IONIZATION MASS-SPECTRUM OF BENZENE
REILLY, JP
KOMPA, KL
[J]. JOURNAL OF CHEMICAL PHYSICS, 1980, 73 (11): : 5468 - 5476
[10] Coulomb explosion of benzene irradiated by an intense femtosecond laser pulse
Shimizu, S
Kou, J
Kawato, S
Shimizu, K
Sakabe, S
Nakashima, N
[J]. CHEMICAL PHYSICS LETTERS, 2000, 317 (06) : 609 - 614

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