Dissociative ionization dynamics of triatomic molecules induced by soft X-rays

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

Ramadhan, Ali^1 ; Wales, Benji^1 ; Gauthier, Isabelle^2 ; Macdonald, Mike^2 ; Zuin, Lucia^2 ; Sanderson, Joe^1

Department of Physics, University of Waterloo, 200 University Avenue West, Waterlooa

ON

N2L 3G1, Canada^1

Canadian Light Source, 44 Innovation Boulevard, Saskatoona

SK

S7N 2V3, Canada^2

关键词: Coulomb explosion;    Dissociative ionization;    Ionization channels;    Kinetic energy release;    Position sensitive detections;    Three body;    Triatomic molecules;    X-ray energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112137/pdf
DOI  :  10.1088/1742-6596/635/11/112137

来源: IOP

【 摘 要 】

Soft X-rays (50eV to 170eV) have been used in conjunction with a triple coincidence time and position sensitive detection apparatus to observe the Coulomb explosion of OCS and CS2. By varying the X-ray energy we can access ionization channels which result in two or three body break up, for 3+, such as O++C++S+and for 4+ such as S++C++S2+. We can compare the kinetic energy release to the value calculated for a purely Coulombic break up from near equilibrium. The extent to which channels are concerted or stepwise is also determined.