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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:42 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Modelling transient processes in the competitive phenomena induced by heavy projectiles in materials for detectors
Authors:
Ionel Lazanu (1) , Sorina Lazanu (2)
Affiliation:
(1) University of Bucharest, Faculty of Physics, POBox MG-11, Bucharest-Măgurele, Romania
(2) National Institute for Materials Physics, POBox MG-7, Bucharest-Măgurele, Romania
E-mail
ionel.lazanu@g.unibuc.ro
Keywords:
detection, degradation, transient processes, semiconductors, liquid noble gases
Abstract:
One of the clues in detection in modern physics is the development of detector materials able to produce two or more different processes, the simultaneous measurement of which would permit discrimination and identification of different particles.
In the same time, the absorption of radiation is not a continuous process and due to the interaction mechanism it is localized. As a result, transient processes are produced, some used in detection, other causing disorder which affects the properties of the detector material. In the present paper the thermal spike model is extended and used for semiconductors and noble liquefied gases used as target media for detectors. Both classes of materials are very promising for the detection of heavy particles in nuclear and astroparticle physics.
The simultaneous measurement of two types of signals (ionization and phonons in semiconductors, ionization and scintillation in liquids respectively) as well as their coupling are discussed.
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