State-selective enhanced production of positive ions and excited neutral fragments of gaseous CH{sub 2}Cl{sub 2} following Cl 2p core-level photoexcitation
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu, 30076 Taiwan (China)
Following photoexcitation of Cl 2p electrons to various resonances, the dissociation dynamics of ionic and excited neutral fragments of gaseous CH{sub 2}Cl{sub 2} was investigated by combined measurements of photon-induced ionic dissociation, x-ray absorption, and uv-visible dispersed fluorescence. The Cl 2p core-to-Rydberg excitations near the ionization threshold produce a notable enhancement of excited neutral fragments (C* and CH*), which is attributed to the contribution from a shake-modified resonant Auger decay and postcollision interaction. The excitation Cl 2p {yields}10 a{sub 1}* induces an enhanced yield of CH{sub 2}{sup +}, possibly originating from fast dissociation via a strongly repulsive surface. The experimental results provide insight into the dissociation dynamics of ionic and excited neutral fragment production following core-level excitation.
- OSTI ID:
- 21450588
- Journal Information:
- Physical Review. A, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevA.82.033421; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION
CATIONS
DISSOCIATION
ELECTRONS
EXCITATION
FLUORESCENCE
IONIZATION
METHYLENE CHLORIDE
PHOTON-MOLECULE COLLISIONS
PHOTONS
RESONANCE
RYDBERG STATES
X RADIATION
BOSONS
CHARGED PARTICLES
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FERMIONS
IONIZING RADIATIONS
IONS
LEPTONS
LUMINESCENCE
MASSLESS PARTICLES
MOLECULE COLLISIONS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTON COLLISIONS
PHOTON EMISSION
RADIATIONS
SORPTION