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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:47 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
THERMOLUMINESCENT CHARACTERISTICS OF IRRADIATED SALT
Authors:
Ana Maria Apostu**, Al. Chirosca*, Claudia Gomoiu**, Al. Jipa*, I. Lazanu*, R. Margineanu**, D. Stanca*
Affiliation:
* University of Bucharest, Faculty of Physics, PO Box MG-11, Bucharest-Magurele, Romania
** Horia Hulubei National Institute of Physics and Nuclear Engineering, Magurele, Romania
E-mail
ionel.lazanu@g.unibuc.ro
Keywords:
thermoluminescence (TL), NaCl, dosimeter, cosmic rays
Abstract:
The next important energy frontiers in nuclear and particle physics using cosmic rays in underground laboratories (salt mines, rocks) allow observation or searches for very rare fundamental physics processes, impossible to undertake on the surface because of radiation background. In order to measure this background, it is necessary to increase the collecting factor for detectors or develop new methods of detection.
The radiation effects in crystals, glasses or ceramics for example, could open new opportunities for phenomena able to be used in radiation detection. The thermoluminescence (TL) of natural and pure and impurity activated synthetic salts (NaCl) has been the subject of research for many decades. In this preliminary study initiated by the Faculty of Physics and IFIN-HH, the capabilities of the rock salt to be used as natural dosimeter for cosmic rays are investigated and compared with standard TL detectors. The limits of sensitivity, the range of linearity in energy, the capability to correlate the energy and type of irradiation particles, the concentration and positions of defects in the band gap and the TL signal are studied. The modifications of the signal due to pressure, humidity and fading on crystals are also investigated.
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