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Femtosecond Nonadiabatic Cascade and Subsequent Photofragmentation of XUV Excited Caffeine Molecule
Kaoru Yamazaki
Alexandre Marciniak
Satoshi Maeda
Maurizio Reduzzi
Victor Despré
Marius Hervé
Mehdi Meziane
Thomas Niehaus
Vincent Loriot
Alexander I. Kuleff
Baptiste Schindler
Isabelle Compagnon
Giuseppe Sansone
Franck Lepine
出版
Universität
, 2020
URL
http://books.google.com.hk/books?id=5IV5zgEACAAJ&hl=&source=gbs_api
註釋
Abstract: We found that the XUV excited caffeine undergoes nondadabatic cascade via more than 100 shake-up states within the time constant of 40 fs by using femtosecond XUV-NIR pump-probe photo-ion spectroscopy and the SAC-CI level of ab-initio many-body theory. This nonadiabatic cascade results in the photofragmentation to specific large fragments. Furether ionization by NIR probe during the cascade increases the small fragments CH3+, CO+ etc. This results show that both vibronic coupling and electron correlation are the keys for the femtochemistry in the highly-correlated electronic excited states