Composition-independent temperature induced by swift heavy ions in insulators and its relation with track formation

A systematic study of the \(R_e\)-\(T_m\) relation (\(R_e\) = track radius, \(T_m\) = melting temperature) in insulators reveals new features of track formation. A quantitative relationship is demonstrated between \(R_e\) values measured in various solids when \(\langle s_e\rangle\)=constant (\(\lan...

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Bibliographic Details
Published in:arXiv.org 2022-08
Main Author: Szenes, Gyorgy
Format: Article
Language:English
Subjects:
Composition
Heavy ions
Insulators
Melt temperature
Stopping power
Temperature distribution
Online Access:Get full text
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Summary:A systematic study of the \(R_e\)-\(T_m\) relation (\(R_e\) = track radius, \(T_m\) = melting temperature) in insulators reveals new features of track formation. A quantitative relationship is demonstrated between \(R_e\) values measured in various solids when \(\langle s_e\rangle\)=constant (\(\langle s_e\rangle\) = atomic stopping power). This effect is the consequence of a composition-independent, identical maximum temperature distribution \(\Delta T(r,0)\), which is induced in various insulators in a narrow cylindrical volume close to the tracks. The uniformity ceases gradually at larger distances. \(\Delta T(r,0)\) has a Gaussian shape, with a constant width w=4.5 nm, is independent of materials parameters and it can be determined experimentally by the measurement of Re in various insulators when \(\langle s_e\rangle\)=constant. The consequences of the experimental \(\Delta T(r,0)\) distribution are discussed.
ISSN:2331-8422