Ultrafast dynamics of ammonia clusters excited by femtosecond VUV laser pulses

被引:26
作者
Freudenberg, T [1 ]
Stert, V [1 ]
Radloff, W [1 ]
Ringling, J [1 ]
Gudde, J [1 ]
Korn, G [1 ]
Hertel, IV [1 ]
机构
[1] FREE UNIV BERLIN,FACHBEREICH PHYS,D-1000 BERLIN,GERMANY
关键词
D O I
10.1016/S0009-2614(97)00312-6
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
Ultrashort 155 nm pulses are used to study the dynamics of ammonia clusters excited to vibronic levels of the (B) over tilde and (C) over tilde' state. For the monomer unexpectedly long lifetimes of about 8 ps for NH3 and 65 ps for ND3 have been found while the clusters decay in the sub-ps region, In contrast to earlier observations for ammonia clusters excited to the (A) over tilde electronic state, for (ND3)(n) the lifetime of the one-photon excited vibronic levels of the (B) over tilde (and (C) over tilde') state decreases with the cluster size. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:523 / 529
页数:7
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