Europhys. Lett.
Volume 47, Number 3, August 1999
Page(s) 384 - 390
Section Condensed matter: electronic structure, electrical, magnetic and optical properties
Published online 01 September 2002
DOI: 10.1209/epl/i1999-00400-0

Europhys. Lett, 47 (3), pp. 384-390 (1999)

Determination of the electron temperature in the thermal spike of amorphous carbon

G. Schiwietz 1, G. Xiao 1, P. L. Grande 2, E. Luderer 1
R. Pazirandeh 1 and U. Stettner 1

1 Hahn-Meitner-Institut, Bereich Festkörperphysik
Glienicker Str. 100, 14109 Berlin, Germany
2 Instituto de Física, Universidade Federal do Rio Grande do Sul
91500 Porto Alegre, Brazil

(received 15 February 1999; accepted in final form 7 June 1999)

PACS. 79.20-m - Impact phenomena (including electron spectra and sputtering).
PACS. 61.80Jh - Ion radiation effects.
PACS. 72.15Cz - Electrical and thermal conduction in amorphous and liquid metals and alloys.


The target KVV Auger-electron emission has been investigated experimentally and theoretically for heavy-ion irradiation of amorphous carbon at an ion velocity of 14.1 atomic units (5 MeV/u). We present experimental evidence for an influence of the target
excitation density on the shape of carbon Auger-electron spectra for O7+, Kr17+ and Kr30+ ions. An analysis of the Auger structures allows for the first time to extract electron temperatures at the center of nuclear tracks and comparison is made with results of two thermal-spike models.


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