2-PHOTON AND 3-PHOTON PUMPED EXCITON-INDUCED CHEMISTRY IN LIQUID KR

被引：3
|
作者：
HILL, MW [1 ]
ZADOYAN, R [1 ]
APKARIAN, VA [1 ]
机构：
[1] UNIV CALIF IRVINE, DEPT CHEM, IRVINE, CA 92717 USA
来源：
CHEMICAL PHYSICS LETTERS | 1992年 / 200卷 / 03期
关键词：
D O I：
10.1016/0009-2614(92)80006-W
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：
Multi-photon pumped, exciton mediated charge transfer reactions in N2O and F2 doped liquid Kr are reported. Irradiation of F2/Kr solutions with almost-equal-to 300 fs pulses at 320 nm leads to three-photon induced emission from Kr2F(4 2GAMMA). Based on transmission measurements, a three-photon cross section of 2 X 10(-81(+/-1)) cm6 s2 is extracted, and attributed to access of Kr (n = 2, j = 3/2) exciton. Irradiation of N2O/Kr solutions, al 320 and 225 nm leads respectively to three-photon induced and two-photon induced emission from KrO (2 1SIGMA). Cross calibration of these signals, and using known two-photon cross sections for reaching Kr excitons. yields a three-photon cross section of 8 X 10(-81) cm6 s2.
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页码：251 / 257
页数：7
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