Effect of Coulomb Explosion on Track Formation in Metals Irradiated by Heavy Ions

Journal Article · Fri Jul 01 04:00:00 EDT 2005 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/1.2010668· OSTI ID:20702532

Ryazanov, A I; Pavlov, S A; Metelkin, E V; Zhemerev, A V ^[1]

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1. Russian Research Center Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182 (Russian Federation)

The existing descriptions of the process of track formation in metals bombarded with high-energy heavy ions are usually based on the T-spike model. However, this model fails to explain high temperatures developed in some target materials (e.g., in copper). We present a comparative analysis of track formation in metals under the action of heavy ion bombardment, as described using the Coulomb explosion model and the T-spike model in various modifications. Both models are used to calculate changes in the temperatures of the electron and ion subsystems in the track region in amorphous alloy Fe{sub 85}B{sub 15}) and copper targets bombarded with identical high-energy (E > 1 MeV/nucleon) heavy ions. The results show that the Coulomb explosion model predicts stronger heating of the ion subsystem in the track region (with the possible formation of a melt-through zone) as compared to the T-spike model. The formation of point defects in copper as a result of the ionization losses has been also described using the two models and compared to the available experimental data. The Coulomb explosion model provides for a more adequate description of track formation as compared to the T-spike model.

• OSTI ID: 20702532
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 1 Vol. 101; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
BORON ALLOYS
COPPER
DISSOCIATION
EXPERIMENTAL DATA
EXPLOSIONS
HEATING
HEAVY IONS
ION BEAMS
IONIZATION
IRON ALLOYS
IRRADIATION
MEV RANGE 01-10
PARTICLE TRACKS
POINT DEFECTS