Do linear molecules always dissociate along their axis? Intra-molecular scattering within Diiodoacetylene

29th International Conference on Photonic, Electronic, and Atomic Collisions

De, Sankar^1 ; Tezuka, H.^2 ; Bhatt, P.^3 ; Vesapidze, G.^4 ; Safvan, C.P.^3 ; Matsumoto, J.^2 ; Shiromaru, H.^2

Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, India^1

Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo, Japan^2

Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, India^3

School of Natural Sciences and Engineering, Ilia State University, Tbilisi, Georgia^4

关键词: Carbon ions;    Linear molecules;    Molecular axis;    Molecular scattering;    Multiply charged;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/3/032061/pdf
DOI  :  10.1088/1742-6596/635/3/032061

来源: IOP

【 摘 要 】

We present here the coincidence study of multiply charged, dissociative diiodoacetylene. We find that instead of breaking up along the molecular axis as in the case of acetylene, the carbon ions of highly charged diiodoacetylene molecule tends to dissociate perpendicularly with respect to the iodine ones. This feature carries a strong signature of intra-molecular scattering between its breakup partners. The heavier iodines block the path of carbons and give rise to 'doughnut' - shaped momentum islands.