Time-resolved laser Coulomb explosion imaging using few-cycle intense laser pulses: Application to exploding CS 2 in highly charged states

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書誌事項

公開日
2014-08
資源種別
journal article
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
DOI
  • 10.1016/j.elspec.2013.12.011
公開者
Elsevier BV

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説明

Abstract Ion-coincidence momentum imaging of three-body Coulomb explosion of CS 2 , CS 2 z +  → S p +  + C q +  + S r + ( z  =  p  +  q  +  r ), in few-cycle intense laser fields (9 fs, ∼10 15  W/cm 2 ) is presented. It is shown that the momentum distributions of fragment ions produced from CS 2 10+ are well reproduced by a classical explosion model incorporating the coordinate and momentum distributions of the initial ground vibrational state of CS 2 . On the other hand, a significant deviation is observed for CS 2 3+ due to the non-Coulombic character of the potential energy surfaces. Coulomb explosion imaging is applied to real-time probing of Coulomb exploding CS 2 in highly charged states, using a pair of intense few-cycle laser pulses. It is shown that the explosion proceeds in a different time scale depending on the charge state, mostly along the linear geometry during the bond-breaking of the two C S bonds.

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