Stereodynamical Control of D3+ Formation from the Bimolecular Photoreaction in the D2-D2 Dimer

We report the stereodynamic control of D3+ formation from the laser-induced bimolecular reaction in a weakly bound D2-D2 dimer via impulsive molecular alignment. Using a linearly polarized moderately intense femtosecond pump pulse, the D2 molecules in the dimer were prealigned prior to the bimolecul...

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Bibliographic Details
Published in:The journal of physical chemistry letters 2023-11, Vol.14 (46), p.10348-10353
Main Authors: Zhou, Lianrong, Qiang, Junjie, Huang, Hao, Jiang, Zhejun, Pan, Shengzhe, Lu, Chenxu, Shi, Menghang, Ye, Zhengjun, Jiang, Wenyu, Zhang, Wenbin, Ni, Hongcheng, Chen, Gang, Lu, Peifen, Wu, Jian
Format: Article
Language:English
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Summary:We report the stereodynamic control of D3+ formation from the laser-induced bimolecular reaction in a weakly bound D2-D2 dimer via impulsive molecular alignment. Using a linearly polarized moderately intense femtosecond pump pulse, the D2 molecules in the dimer were prealigned prior to the bimolecular reaction triggered by a delayed probe pulse. The rotationally excited D2 in the dimer was observed to rotate freely as if it were a monomer. It was demonstrated that the yield of photoreaction product D3+ is increased or decreased when the molecular axis of D2 is parallel or perpendicular to the probe laser polarization, respectively. The underlying physics of this steric effect is the alignment-dependent bond cleavage of D2+ in the dimer induced by a photon-coupled parallel transition.
ISSN:1948-7185
DOI:10.1021/acs.jpclett.3c02584