Circular Dichroism in Fluorescence Emission Following the C 1sâπ* Excitation and Resonant Auger Decay of Carbon Monoxide.
Molecules
; 23(7)2018 06 26.
Article
in En
| MEDLINE
| ID: mdl-29949868
ABSTRACT
Dichroism in angle-resolved spectra of circularly polarized fluorescence from freely-rotating CO molecules was studied experimentally and theoretically. For this purpose, carbon monoxide in the gas phase was exposed to circularly polarized soft X-ray synchrotron radiation. The photon energy was tuned across the C 1sâπ* resonant excitation, which decayed via the participator Auger transition into the CO⺠A ²Π state. The dichroic parameter ß1 of the subsequent CO⺠(A ²Π â X ²Σâº) visible fluorescence was measured by photon-induced fluorescence spectroscopy. Present experimental results are explained with the ab initio electronic structure and dynamics calculations performed by the single center method. Our results confirm the possibility to perform partial wave analysis of the emitted photoelectrons in closed-shell molecules.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carbon Monoxide
/
Circular Dichroism
Language:
En
Journal:
Molecules
Journal subject:
BIOLOGIA
Year:
2018
Document type:
Article
Affiliation country:
Alemania