Polarization and anisotropy of x-ray emission from molecules

Conference · Thu Dec 06 04:00:00 EST 1990 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7173022

Cowan, P L ^[1]

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1. National Institute of Standard and Technology, Gaithersburg, MD 20899 (United States)

X-ray emission from selectively excited core hole states in molecular gases can exhibit strong polarization and anisotropic angular distributions. These effects are attributable to the creation of an aligned ensemble of excited molecules within the otherwise randomly oriented molecular gas. This alignment can be created because the resonant excitation probability of core hole states can be strongly dependent upon the instantaneous molecular orientation. This effect presents a novel opportunity for studying molecular symmetries and the structure of matter in disordered phases.

• OSTI ID: 7173022
• Report Number(s): CONF-900757--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 215:1
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
664400 -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ALIGNMENT
ANGULAR DISTRIBUTION
ANISOTROPY
CHEMICAL ANALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE
DATA
DIAGRAMS
DISTRIBUTION
ELASTIC SCATTERING
ELECTRONIC STRUCTURE
ELEMENTS
EXPERIMENTAL DATA
FEYNMAN DIAGRAM
FLUIDS
FLUORESCENCE
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
HOLES
INFORMATION
K SHELL
LUMINESCENCE
METHYL CHLORIDE
MOLECULAR STRUCTURE
MOLECULES
NONDESTRUCTIVE ANALYSIS
NONMETALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLARIZATION
RESONANCE
SCATTERING
X-RAY EMISSION ANALYSIS