Hard-X-Ray-Induced Multistep Ultrafast Dissociation

Creation of deep core holes with very short (τ≤1  fs) lifetimes triggers a chain of relaxation events leading to extensive nuclear dynamics on a few-femtosecond time scale. Here we demonstrate a general multistep ultrafast dissociation on an example of HCl following Cl 1s→σ^{*} excitation. Intermedi...

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Bibliographic Details
Published in:Physical review letters 2016-05, Vol.116 (21), p.213001-213001, Article 213001
Main Authors: Travnikova, Oksana, Marchenko, Tatiana, Goldsztejn, Gildas, Jänkälä, Kari, Sisourat, Nicolas, Carniato, Stéphane, Guillemin, Renaud, Journel, Loïc, Céolin, Denis, Püttner, Ralph, Iwayama, Hiroshi, Shigemasa, Eiji, Piancastelli, Maria Novella, Simon, Marc
Format: Article
Language:English
Subjects:
Absorption
Chains
Chemical Sciences
Decay
Photons
Physics
Potential energy
Surface chemistry
Time
X-rays
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Summary:Creation of deep core holes with very short (τ≤1  fs) lifetimes triggers a chain of relaxation events leading to extensive nuclear dynamics on a few-femtosecond time scale. Here we demonstrate a general multistep ultrafast dissociation on an example of HCl following Cl 1s→σ^{*} excitation. Intermediate states with one or multiple holes in the shallower core electron shells are generated in the course of the decay cascades. The repulsive character and large gradients of the potential energy surfaces of these intermediates enable ultrafast fragmentation after the absorption of a hard x-ray photon.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/physrevlett.116.213001