Characteristic x-ray production by argon projectiles moving in graphite targets between 30 and 200 keV

Journal Article · Mon Sep 01 04:00:00 EDT 1975 · Phys. Rev., A, v. 12, no. 3, pp. 856-868

DOI:https://doi.org/10.1103/PhysRevA.12.856· OSTI ID:4154420

Fortner, R J; Garcia, J D

Thick-target yields and x-ray spectra have been measured for argon ions impinging on graphite targets at energies between 30 and 200 keV. The thick- target yields of carbon K-shell and argon L-shell x rays are analyzed on the basis of a simple model involving multiple collisions and molecular-orbital promotions. The analysis results in average argon L-shell fluorescence yields and total decay rates for argon ions traversing the solid. These values are found to be substantially lower than those appropriate to argon ions traversing a gas target. An explanation for the differences is proposed, and found to be corroborated by analysis of the observed x-ray spectra. An approximate determination of the argon M-shell vacancy distribution is obtained and compared with beam-foil charge equilibrium measurements.

• Research Organization: Lawrence Livermore Laboratory, Livermore, California 94550
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-004526
• OSTI ID: 4154420
• Journal Information: Phys. Rev., A, v. 12, no. 3, pp. 856-868, Journal Name: Phys. Rev., A, v. 12, no. 3, pp. 856-868; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

*ARGON IONS-- MULTIPLE COLLISION METHOD
*GRAPHITE-- CHARGED-PARTICLE TRANSPORT
643601*
DECAY
FLUORESCENCE
KEV RANGE 10-100
KEV RANGE 100-1000
N60100 --Physics (Atomic & Molecular)--Atomic
Electron
Ion & Molecular Beams & Reactions
N72100* --Physics (Radiation & Shielding)--Radiation Physics
X-RAY SPECTRA