Rotational and nuclear-spin level dependent photodissociation dynamics of H(2)S.
Rotational and nuclear-spin level dependent photodissociation dynamics of H(2)S.
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H2S 的旋转和核自旋水平依赖的光解离动力学
DOI:
10.1038/s41467-021-24782-6
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发表时间:
2021-07-22
影响因子:
16.6
通讯作者:
Yang X
中科院分区:
文献类型:
--
作者:
Zhao Y;Luo Z;Chang Y;Wu Y;Zhang SE;Li Z;Ding H;Wu G;Campbell JS;Hansen CS;Crane SW;Western CM;Ashfold MNR;Yuan K;Yang X
The detailed features of molecular photochemistry are key to understanding chemical processes enabled by non-adiabatic transitions between potential energy surfaces. But even in a small molecule like hydrogen sulphide (H2S), the influence of non-adiabatic transitions is not yet well understood. Here we report high resolution translational spectroscopy measurements of the H and S(1D) photoproducts formed following excitation of H2S to selected quantum levels of a Rydberg state with 1B1 electronic symmetry at wavelengths λ ~ 139.1 nm, revealing rich photofragmentation dynamics. Analysis reveals formation of SH(X), SH(A), S(3P) and H2 co-fragments, and in the diatomic products, inverted internal state population distributions. These nuclear dynamics are rationalised in terms of vibronic and rotational dependent predissociations, with relative probabilities depending on the parent quantum level. The study suggests likely formation routes for the S atoms attributed to solar photolysis of H2S in the coma of comets like C/1995 O1 and C/2014 Q2.
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影响因子:
6.5
作者:
Heays, A. N.;Bosman, A. D.;van Dishoeck, E. F.
通讯作者:
van Dishoeck, E. F.
影响因子:
4.4
作者:
Cheng, Yuan;Yuan, Kaijun;Yang, Xueming
通讯作者:
Yang, Xueming
影响因子:
6.5
作者:
Goicoechea, J. R.;Aguado, A.;Duran, C. A.
通讯作者:
Duran, C. A.
影响因子:
1.4
作者:
GALLO, AR;INNES, KK
通讯作者:
INNES, KK
影响因子:
4.4
作者:
Cook, PA;Langford, SR;Ashfold, MNR
通讯作者:
Ashfold, MNR