Pruneda, J. M. and Sanchez-Portal, D. and Arnau, A. and Juaristi, J. I. and Artacho, E. (2007) Electronic stopping power in LiF from first principles. Physical Review Letters, 99 (23). pp. 235501-4. DOI https://doi.org/10.1103/PhysRevLett.99.235501
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Abstract
Using time-dependent density-functional theory we calculate from first principles the rate of energy transfer from a moving proton or antiproton to the electrons of an insulating material, LiF. The behavior of the electronic stopping power versus projectile velocity displays an effective threshold velocity of 0:2 a:u: for the proton, consistent with recent experimental observations, and also for the antiproton. The calculated proton/antiproton stopping-power ratio is 2:4 at velocities slightly above the threshold (v 0:4 a:u:), as compared to the experimental value of 2.1. The projectile energy loss mechanism is observed to be extremely local.
Item Type: | Article |
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Uncontrolled Keywords: | 2007 AREP IA55 2007 P |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Physical Review Letters |
Volume: | 99 |
Page Range: | pp. 235501-4 |
Identification Number: | https://doi.org/10.1103/PhysRevLett.99.235501 |
Depositing User: | Sarah Humbert |
Date Deposited: | 16 Feb 2009 13:03 |
Last Modified: | 23 Jul 2013 10:08 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/612 |
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