Mathematical Simulation of Track Formation in High-Temperature Superconductor¹

Article type: Research Article

Authors: Goncharov, I.N.^{; 2} | Kostenko, B.F.^{; 3; 4} | Philinova, V.P.

Affiliations: LIT, JINR, Dubna, 141980 Moscow region, Russia

Correspondence: [4] The address for manuscript correspondence: B.F. Kostenko, LIT, JINR, Dubna, Moscow region, 141980, Russia. Fax: (096-21) 65145. Tel.: (095) 62218. E-mail: [email protected].

Note: [1] The present work was supported in part by RFBR, project Nr. 99-01-01101.

Note: [2] E-mail: [email protected].

Note: [3] E-mail: [email protected].

Abstract: Energy relaxation processes after the passage of fast heavy ions through YBa2 Cu3 O7−δ single crystal have been calculated. Effective times τ of electron-atom energy relaxation have been determined as fitting parameters for each pair of the measured track radius and the value of dE/dx. The latter quantity has been chosen over the interval of 20 ÷ 40 keV/nm. The calculated results are compared with short pulse laser experiments and with Allen's theory, which predicts almost a linear dependence of τ on electron temperature.

Keywords: Mathematical simulation, nuclear track, high-temperature superconductor, thermal-spike model

DOI: 10.3233/JCM-2002-21-223

Journal: Journal of Computational Methods in Sciences and Engineering, vol. 2, no. 1-2, pp. 169-174, 2002