Introducing electron capture into the unitary-convolution-approximation energy-loss theory at low velocities

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.052703· OSTI ID:22093523

Schiwietz, G. ^[1]; Grande, P. L. ^[2]

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1. Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Institute G-I2, Hahn-Meitner-Platz 1, DE-14109 Berlin (Germany)
2. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, BR-91500-970 Porto Alegre (Brazil)

Recent developments in the theoretical treatment of electronic energy losses of bare and screened ions in gases are presented. Specifically, the unitary-convolution-approximation (UCA) stopping-power model has proven its strengths for the determination of nonequilibrium effects for light as well as heavy projectiles at intermediate to high projectile velocities. The focus of this contribution will be on the UCA and its extension to specific projectile energies far below 100 keV/u, by considering electron-capture contributions at charge-equilibrium conditions.

• OSTI ID: 22093523
• Journal Information: Physical Review. A, Vol. 84, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
ELECTRON CAPTURE
ENERGY LOSSES
EQUILIBRIUM
ION COLLISIONS
KEV RANGE
STOPPING POWER
VELOCITY
VISIBLE RADIATION