Auger electron spectroscopy applied to inner shell ionization by fast charged particles

Conference · Tue Jan 01 04:00:00 EST 1974

OSTI ID:4113548

Toburen, L H; Duggan, J L; Morgan, I L ^[1]

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1. eds.

Until recently, inner shell ionization by charged particle impact was studied almost exclusively through the use of x-ray spectroscopy. This method is limited in accuracy, however, for ionization of inner shells where the fluorescence yield is small. For K-shell ionization of elements with atomic number less than about ten the fluorescence yield can be considered negligible and Auger electron emission cross section provide direct information regarding the ionization cross section. The ionization cross sections determined in this way are accurate to approximately 20 percent whereas x-ray measurements may be uncertain by a factor of five or more due to uncertainties in fluorescence yields. In addition to ionization cross sections, Auger emission spectra provide information regarding multiple ionization, effects of molecular binding on inner shell ionization and, when coupled with x-ray measurements, provide fluorescence yields as a function of the final state of the target atom. These points will be illustrated for ionization by fast protons along with some results for heavier incident particles. (auth)

• Research Organization: Battelle Pacific Northwest Lab., Richland, WA; North Texas State Univ., Denton (USA)
• NSA Number: NSA-33-013004
• OSTI ID: 4113548
• Report Number(s): CONF-741040--P1
• Country of Publication: United States
• Language: English

Related Subjects

*ACETYLENE-- ION-ATOM COLLISIONS
*CARBON MONOXIDE-- ION-ATOM COLLISIONS
*ETHANE-- ION-ATOM COLLISIONS
*HELIUM IONS-- ION-ATOM COLLISIONS
*HYDROGEN IONS 1 PLUS-- ION-ATOM COLLISIONS
640304* --Physics Research--Atomic
Molecular & Chemical Physics--Collision Phenomena
ATOMS
AUGER EFFECT
BINDING ENERGY
CROSS SECTIONS
ELECTRONIC STRUCTURE
EMISSION SPECTRA
FLUORESCENCE
IONIZATION
N60400* --Physics (Atomic & Molecular)--Collision Phenomena
PROBABILITY