Abstract
The target dependence for projectile electron loss is investigated using experimental data taken from the literature. Impact energies range from a few tens of eV/u to tens of MeV/u. for energies less than several MeV/u, the target dependences are shown to be very similar, independent of projectile species and charge state. overall, however, with increasing impact energy the cross-section dependence on the target nuclear charge systematically increases. It is shown that none of the existing cross-section target scaling models reproduce these features. a model, based on Born scaling and including both the Anti screening and screening contributions to projectile electron loss, is developed. with the inclusion of relativistic effects, which increase the contribution from both channels at high energies, and "target saturation" effects, which reduce the contribution from the screening term for heavy targets and lower impact energies, this model describes quite reasonably all available experimental data. a simple scaling formula that reproduces the measured atomic number and impact velocity dependences is provided. This formula is applicable for projectile electron loss in collisions with either atomic or molecular targets and for impact energies ranging from a few to tens of MeV/u. © 2011 American Physical Society.
Recommended Citation
R. D. DuBois et al., "Electron Loss from Fast Heavy Ions: Target-scaling Dependence," Physical Review A - Atomic, Molecular, and Optical Physics, vol. 84, no. 2, article no. 022702, American Physical Society, Aug 2011.
The definitive version is available at https://doi.org/10.1103/PhysRevA.84.022702
Department(s)
Physics
International Standard Serial Number (ISSN)
1094-1622; 1050-2947
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
04 Aug 2011
