Synchrotron radiation inner-shell photoionization of atomic and molecular gases

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7104967

Short, R T; O, C S; Levin, J C; Sellin, I A; Johnson, B M; Meron, M; Jones, K W; Church, D A

A time-of-flight (TOF) spectrometer has been used to measure the average kinetic energies of near thermal atomic and molecular ions, as well as energetic molecular ion fragments, produced by inner-shell photoionization of atomic and molecular gas targets using x rays from the National Synchrotron Light Source (NSLS). While atomic and molecular ions acquire very little energy from the initial photoionization event and subsequent vacancy cascades, multiply charged molecular ions decompose rapidly, producing fragment ions which have kinetic energies determined by their configuration at the moment of decomposition. The strong effects observed suggest that this technique may be extended to the study of configurations of free molecules as well as the orientation of molecules adsorbed on surfaces. 5 refs., 2 figs.

• Research Organization: Tennessee Univ., Knoxville (USA); Oak Ridge National Lab., TN (USA); Brookhaven National Lab., Upton, NY (USA); Texas A and M Univ., College Station (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7104967
• Report Number(s): CONF-861114-22; ON: DE87001825
• Country of Publication: United States
• Language: English

Related Subjects

640301 -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOMS
BREMSSTRAHLUNG
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY SPECTRA
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
IONIZATION
IONS
MEASURING INSTRUMENTS
MOLECULES
MULTICHARGED IONS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOIONIZATION
RADIATIONS
RARE GASES
SPECTRA
SPECTROMETERS
SYNCHROTRON RADIATION
TIME-OF-FLIGHT SPECTROMETERS