Detailed model study of dissipative quantum dynamics of K2 attached to helium nanodroplets
Detailed model study of dissipative quantum dynamics of K2 attached to helium nanodroplets
复制标题
附着在氦纳米液滴上的 K2 耗散量子动力学的详细模型研究
DOI:
10.1088/1367-2630/14/1/013029
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发表时间:
2012
影响因子:
3.3
通讯作者:
W.T. Strunz
中科院分区:
文献类型:
--
作者:
M. Schlesinger;W.T. Strunz
We thoroughly investigate vibrational quantum dynamics of dimers attached to He droplets, motivated by recent measurements with K 2 (Claas et al 2006 J. Phys. B: At. Mol. Opt. Phys. 39 S1151). For those femtosecond pump–probe experiments, the crucial observed features are not reproduced by gas-phase calculations, but agreement is found using a description based on dissipative quantum dynamics, as briefly shown in the work by Schlesinger et al (2010 Chem. Phys. Lett. 490 245–8). Here we present a detailed study of the influence of possible effects induced by the droplet. The helium droplet causes electronic decoherence, shifts of potential surfaces and relaxation of wave packets in attached dimers. Moreover, a realistic description of (stochastic) desorption of dimers off the droplet needs to be taken into account. Step by step, we include and study the importance of these effects in our full quantum calculation of the effective dimer dynamics. This approach allows us to reproduce and explain all major experimental findings. We find that desorption is fast and occurs within 2–10 ps after electronic excitation. A further finding is that slow vibrational motion in the ground state can be considered frictionless.
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DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
F. Stienkemeier;A. Vilesov
通讯作者:
A. Vilesov
影响因子:
8.6
作者:
A. Braun;M. Drabbels
通讯作者:
M. Drabbels
影响因子:
2.9
作者:
M. Schlesinger;W. Strunz
通讯作者:
W. Strunz
影响因子:
4.4
作者:
Dick, B;Slenczka, A
通讯作者:
Slenczka, A
影响因子:
3.4
作者:
J. Reho;C. Callegari;J. Higgins;W. Ernst;K. Lehmann;G. Scoles
通讯作者:
G. Scoles