Properties of cold ions produced by synchrotron radiation and by charged particle impact
Argon recoil ions produced by beams of 0.8 MeV/u Cl/sup 5 +/ have been detected by time-of-flight (TOF) techniques in coincidence with the loss of from one to five projectile electrons. Recoil-ion energies have been determined to be more than an order of magnitude higher than those of highly-charged ions produced by unmonochromatized synchrotron radiation. Charge-state distributions, however, show similarities, suggesting that loss of projectile electrons corresponds, in some cases, to inner-shell target ionization producing vacancy cascades. In an essential improvement to the usual multinomial description of ionization in the independent-electron-ejection model, we find the inclusion of Auger vacancy cascades significantly alters the description of the recoil ion spectra corresponding to projectile-electron loss. These conclusions are consistent with impact parameters inferred from determinations of mean recoil energy. 11 refs., 5 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7049507
- Report Number(s):
- CONF-881151-34; ON: DE89002331
- Resource Relation:
- Conference: International conference on the application of accelerators in research and industry, Denton, TX, USA, 7 Nov 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ION-ATOM COLLISIONS
IONIZATION
ARGON IONS
CHLORINE IONS
EXPERIMENTAL DATA
ION BEAMS
ION SPECTROSCOPY
PHOTOIONIZATION
SYNCHROTRON RADIATION
TIME-OF-FLIGHT METHOD
ATOM COLLISIONS
BEAMS
BREMSSTRAHLUNG
CHARGED PARTICLES
COLLISIONS
DATA
ELECTROMAGNETIC RADIATION
INFORMATION
ION COLLISIONS
IONS
NUMERICAL DATA
RADIATIONS
SPECTROSCOPY
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena