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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Experimental determination of track cross-section in Gd
3
Ga
5
O
12
and comparison to the inelastic thermal spike model applied to several materials
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Volume 237, No. 3-4, Year 2005
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Description
Single crystals of gadolinium gallium garnet, Gd3Ga 5O12 have been irradiated with various swift heavy ions (32S, 52Cr, 63Cu, 86Kr, 128Te, 129Xe, 181Ta, 208Pb, 238U) in the electronic stopping power regime. The extent of the induced damage is extracted from channelling Rutherford backscattering experiments and the corresponding track radii are deduced. At low beam energy (around 1.5 MeV/u), the electronic stopping power threshold of damage creation is 7.2 ±1.2 keV/nm while it is 9.3 ± 0.9 keV/nm for beam energy around 6 MeV/u. The inelastic Thermal Spike model (i-TS) is used in order to calculate the track radii versus (dE/dx)e using λ, the mean diffusion length of the energy deposited on the electrons, as the only fitting parameter model. The i-TS model was extended to some other amorphizable materials like YBa2Cu3O7-δ, GeS and LiNbO3. The results, combined with previous ones extracted from BaFe12O19, Y3Fe5O 12,Y3Al5O12 and α-SiO 2 quartz data, showed that k decreases when the band gap energy Eg increases. By extrapolation and depending of the material, the damage threshold induced by electronic excitation can appear at beam energy as low as 10-3 to 10-1 MeV/u. © 2005 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Meftah, A.
Algeria, Skikda
Université 20 Août 1955-skikda
Costantini, J. M.
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Khalfaoui, N.
France, Caen
Centre Interdisciplinaire de Recherche Ions Lasers
Boudjadar, Smail
Algeria, Skikda
Université 20 Août 1955-skikda
Stoquert, Jean Paul
France, Illkirch-graffenstaden
Laboratoire Des Sciences de L'ingénieur, de L'informatique et de L'imagerie
Studer, Francis
France, Caen
Université de Caen Normandie
Toulemonde, Marcel
France, Caen
Centre Interdisciplinaire de Recherche Ions Lasers
Statistics
Citations: 160
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1016/j.nimb.2005.02.025
ISSN:
0168583X