Photodissociation dynamics of gas-phase C-60 probed by optical emission spectroscopy

被引：15

作者：

Heszler, P

Carlsson, JO

Demirev, P

机构：

[1] UNIV UPPSALA,DEPT RADIAT SCI,DIV ION PHYS,S-75121 UPPSALA,SWEDEN

[2] UNIV UPPSALA,DEPT CHEM,ANGSTROM CONSORTIUM,S-75121 UPPSALA,SWEDEN

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.53.12541

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fragmentation of gas-phase C-60 after 193 nm laser excitation at 300 mJ/cm(2) fluence is probed by optical emission spectroscopy. Atomic C emission at 247.85 nm, and Mulliken, Deslandres-D'Azambuja, and Swan bands from C-2 species are observed. Time-resolved experiments reveal prompt C and C-2 fragmentation on a ns time scale or less, and delayed C-2 release on a mu s scale. The latter is a pathway for energy relaxation in C-60,whereby delayed electronically excited C-2 fragments are subsequently deexcited by photon emission.

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页码：12541 / 12544

页数：4

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