OPTICAL-EMISSION STUDIES OF LASER-DESORBED C-60

被引：119

作者：

MITZNER, R

CAMPBELL, EEB

机构：

[1] Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, D-12474 Berlin

来源：

JOURNAL OF CHEMICAL PHYSICS | 1995年 / 103卷 / 07期

关键词：

D O I：

10.1063/1.469667

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 optical emission spectra of laser desorbed C-60 have been investigated as a function of laser fluence for desorption with a XeCl excimer laser (pulse length 20 ns). The observed spectra show close similarities to black-body radiation and can be fitted with the Planck black body formula (modified for small particles) thus giving information on the temperature of the desorbed species. The temperatures obtained (2300-3000 K) are in good qualitative agreement with previous, indirect temperature estimates. Spatially and temporally resolved measurements provide additional insight into the desorption mechanisms. An estimate of cooling rates indicates that thermionic electron emission and Ct fragmentation dominate for temperatures above about 3000 K but below this value the dominant cooling mechanism is black-body radiation. (C) 1995 American Institute of Physics.

引用

页码：2445 / 2453

页数：9

共 37 条

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