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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:37 |
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Conference: Bucharest University Faculty of Physics 2013 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Thermal effects produced at cryogenic temperatures in materials used as bolometric detectors for Dark Matter
Authors:
Ionel Lazanu (1), Sorina Lazanu (2)
Affiliation:
(1) University of Bucharest, Faculty of Physics, POBox MG-11, Magurele-Bucharest
(2) National Institute of Materials Physics, Str. Atomistilor 105bis, Magurele, 077125, Romania
E-mail
ionel.lazanu@g.unibuc.ro
lazanu@infim.ro
Keywords:
solid noble gases, semiconductors thermal effects, defects, dark matter
Abstract:
In the present paper a systematic analysis of the transient phenomena associated with the stopping of recoils in the solid phase of the noble gases and in semiconductors as silicon and germanium is performed. The energy deposited corresponds to a single interaction of a WIMP from Dark Matter. All the investigations are modeled in the frame of the spike thermal model with two distinct sources corresponding to the energy transferred to the lattice and electronic systems respectively. The contribution of the coupling between electronic and atomic subsystems is also discussed. In the case of solid argon and xenon materials (or non-biased devices), for particular cases, phase transitions in the bulk are predicted. The possibility of generation of stable effects is discussed, as well as the consequences for the Luke Neganov effect.
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