UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2026-06-11 23:58
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Conference: Bucharest University Faculty of Physics 2026 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Characteristics of tracks from alpha particles on SSNTD (CR-39) irradiated by radon and progenies


Authors:
Ionel ELISEI (1), Ioana LALAU (1, 2), Mihail-Razvan IOAN (2)


*
Affiliation:
1) University of Bucharest, Faculty of Physics, 405 Atomistilor Street, Magurele, PO Box MG-11, Ilfov County, 077125, Romania

2) Horia Hulubei National Institute for Research and Development in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, Magurele, PO Box MG-6, Ilfov County, 077125, Romania


E-mail
ioana.lalau@nipne.ro


Keywords:
natural radioactivity, radon, progeny, SSNTD, tracks


Abstract:
Passive measurements of radon and its progeny are commonly performed using solid state nuclear track detectors (SSNTD), such as CR-39, placed inside a diffusion chamber with cylindrical geometry. Usually, researchers focus on a low number of primary variables (ion energy, ion charge, material sensitivity, etchant temperature, etchant concentration, etching time, and angle of incidence) to characterize the final track, justified by the similarity of different experiments. However, when the applicability of the method is extended to the search for a very different class of particles, such as dark matter candidates, additional parameters may also become relevant. In this communication, we focused on highlighting aspects associated with tracks formation and their characteristics in CR-39 passive detectors and not with dose determination.


References:

1. J. M. Stajic et. al., Radiation Physics and Chemistry 181 (2012) 109340

2. D. Nikezic, K. N. Yu, Nucl. Instr. Meth. In Phys. Research B 187 (2002) 492

3. Frederick Seitz, Disc. Faraday Soc. 5, 271 (1949)

4. M. Toulemonde et. al., Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 91, 108–123 (1994)

5. I. Lazanu, S. Lazanu, Astropart. Phys. 75 (2016) 44-54



Acknowledgement:
This work was funded through through Core Project PN: 23 21 02 03. The Core Project PN 23 21 02 03 has received funding from the National Research Authority - Romanian Ministry of Education and Research (MEC). For (IL) part of this work was supported by the Romania- CERN Program, under contract CERN-RO/CDI/2024-001/25.11.2024