Ultrafast internal conversion and fragmentation in electronically excited C2H4 and C2H3Cl molecules

被引：89

作者：

Farmanara, P ^{[1
]}

Stert, V ^{[1
]}

Radloff, W ^{[1
]}

机构：

[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 288卷 / 2-4期

关键词：

D O I：

10.1016/S0009-2614(98)00312-1

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 time constants of internal conversion and fragmentation have been determined for ethylene and vinyl chloride excited by 125 fs laser pulses of the wavelength 200 nm. In C2H4 the internal conversion from the lowest excited electronic state to the ground state proceeds within tau(IC) = 30 +/- 15 fs. In C2H3Cl the internal conversion with tau(IC) = 30 +/- 10 fs leads to the fast dissociating S-1 state ( tau(F) = 40 +/- 10 fs) as well as to the S-0 ground state which decays within about 110 ps. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：518 / 522

页数：5

共 12 条

[1]

[Anonymous], 1996, FEMTOCHEMISTRY

[2]

FREUDENBERG T, 1996, Z PHYS D, V36, P346

[3] Multireference configuration interaction study of the mixed valence Rydberg character of the C2H4 (1)(pi,pi*) V state [J].

Krebs, S ;

Buenker, RJ .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (17) :7208-7214

[4] On the theoretical investigation of vibronic spectra of ethylene by ab initio calculations of the Franck-Condon factors [J].

Mebel, AM ;

Chen, YT ;

Lin, SH .

JOURNAL OF CHEMICAL PHYSICS, 1996, 105 (20) :9007-9020

[5] MECHANISM OF THE ULTRAVIOLET PHOTODISSOCIATION OF CHLOROETHYLENES DETERMINED FROM THE DOPPLER PROFILES, SPATIAL ANISOTROPY, AND POWER DEPENDENCE OF THE PHOTOFRAGMENTS [J].

MO, YX ;

TONOKURA, K ;

MATSUMI, Y ;

KAWASAKI, M ;

SATO, T ;

ARIKAWA, T ;

REILLY, PTA ;

XIE, YG ;

YANG, YA ;

HUANG, Y ;

GORDON, RJ .

JOURNAL OF CHEMICAL PHYSICS, 1992, 97 (07) :4815-4826

[6] MECHANISMS OF NONADIABATIC TRANSITIONS IN PHOTOISOMERIZATION PROCESSES OF CONJUGATED MOLECULES - ROLE OF HYDROGEN MIGRATIONS [J].

OHMINE, I .

JOURNAL OF CHEMICAL PHYSICS, 1985, 83 (05) :2348-2362

[7] FEMTOSECOND DYNAMICS OF BENZENE (NH3)(N) COMPLEXES IN HIGHLY EXCITED-STATES [J].

RADLOFF, W ;

FREUDENBERG, T ;

RITZE, HH ;

STERT, V ;

WEYERS, K ;

NOACK, F .

CHEMICAL PHYSICS LETTERS, 1995, 245 (4-5) :400-406

[8]

RINGLING J, 1993, OPT LETT, V18, P2925

[9] MICROSCOPIC MODELING OF PHOTOISOMERIZATION AND INTERNAL-CONVERSION DYNAMICS [J].

SEIDNER, L ;

DOMCKE, W .

CHEMICAL PHYSICS, 1994, 186 (01) :27-40

[10] C-Cl bond rupture in ultraviolet photodissociation of vinyl chloride [J].

Tonokura, K ;

Daniels, LB ;

Suzuki, T ;

Yamashita, K .

JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (42) :7754-7764

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