Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 218, Issue -, Pages 289-293Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2004.01.014
Keywords
ion tracks in solids; modified track structure theory; thermoluminescent efficiencies
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Track size information for low energy light ions in LiF is obtained from radial dose distributions calculated with a Monte Carlo coupled ion-electron transport code. For 30 MeV carbon ions in LiF the complete track extends as far as 5000 Angstrom around the ion's path though 85% and 50% of the radial integrated dose is deposited in a region of 530 and 96 Angstrom, respectively. This means that relevant radial track sizes are of the order of 10% of the total extension. Applying modified track structure theory with 8.1 keV X-rays as test radiation shows that a saturation radius may be defined at the centre of the track which limits a very-high-dose region that does not contribute to the thermoluminescent efficiency. Results for protons, helium and carbon ions are presented. (C) 2004 Elsevier B.V. All rights reserved.
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