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Open AccessArticle

Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors

1
Low Temperature Plasma Department, National Institute for Laser, Plasma and Radiation Physics (INFLPR), Magurele 077125, Romania
2
Centre for Advanced Laser Technology (CETAL-PW), National Institute for Laser, Plasma and Radiation Physics, Magurele 077125, Romania
3
STARDOOR Department, National Institute for Laser, Plasma and Radiation Physics, Magurele 077125, Romania
4
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Magurele 077125, Romania
5
Nano-SAE Research Centre, Faculty of Physics, University of Bucharest, Magurele 077125, Romania
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Department of Nuclear Physics, Faculty of Physics, University of Bucharest, Magurele 077125, Romania
7
Doctoral School in Physics, Faculty of Physics, University of Bucharest, Magurele 077125, Romania
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Faculty of Electronics, Politehnica University of Bucharest (UPB), Bucharest 060042, Romania
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(10), 2052; https://doi.org/10.3390/app9102052
Received: 5 April 2019 / Revised: 15 May 2019 / Accepted: 16 May 2019 / Published: 18 May 2019
(This article belongs to the Special Issue Laser Acceleration Technology and Applications)
We show that a spectral distribution of laser-accelerated protons can be extracted by analyzing the proton track diameters observed on the front side of a second CR-39 detector arranged in a stack. The correspondence between the proton track diameter and the incident energy on the second detector is established by knowing that protons with energies only higher than 10.5 MeV can fully deposit their energy in the second CR-39 detector. The correlation between the laser-accelerated proton track diameters observed on the front side of the second CR-39 detector and the proton incident energy on the detector stack is also presented. By calculating the proton number stopped in the CR-39 stack, we find out that its dependence on the proton energy in the 1–15 MeV range presents some discontinuities at energies higher than 9 MeV. Thus, we build a calibration curve of the track diameter as a function of the proton incident energy within the 1–9 MeV range, and we infer the associated analytical function as the calculations performed indicate best results for proton spectra within the 1–9 MeV range. The calibration curve is used as a tool to ascertain the pits identified on the surfaces of both CR-39 detectors to proton tracks. The proton tracks spatial distribution analyzed by optical and atomic force microscopy is correlated with the peculiarity of the used targets. View Full-Text
Keywords: laser-accelerated proton beams; CR-39 detectors; visible light microscopy; atomic force microscopy laser-accelerated proton beams; CR-39 detectors; visible light microscopy; atomic force microscopy
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MDPI and ACS Style

Groza, A.; Serbanescu, M.; Butoi, B.; Stancu, E.; Straticiuc, M.; Burducea, I.; Balan, A.; Chirosca, A.; Mihalcea, B.; Ganciu, M. Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors. Appl. Sci. 2019, 9, 2052. https://doi.org/10.3390/app9102052

AMA Style

Groza A, Serbanescu M, Butoi B, Stancu E, Straticiuc M, Burducea I, Balan A, Chirosca A, Mihalcea B, Ganciu M. Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors. Applied Sciences. 2019; 9(10):2052. https://doi.org/10.3390/app9102052

Chicago/Turabian Style

Groza, Andreea; Serbanescu, Mihai; Butoi, Bogdan; Stancu, Elena; Straticiuc, Mihai; Burducea, Ion; Balan, Adriana; Chirosca, Alecsandru; Mihalcea, Bogdan; Ganciu, Mihai. 2019. "Advances in Spectral Distribution Assessment of Laser Accelerated Protons using Multilayer CR-39 Detectors" Appl. Sci. 9, no. 10: 2052. https://doi.org/10.3390/app9102052

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