CR-39 nuclear track material is frequently used for the detection of protons accelerated in laser-plasma interactions. The measurement of track densities allows for determination of particle angular distributions, and information on the kinetic energy can be obtained by the use of passive absorbers. We present a precise method of measuring spectral distributions of laser-accelerated protons in a single etching and analysis process. We make use of a one-to-one relation between proton energy and track size and present a precise calibration based on monoenergetic particle beams. While this relation is limited to proton energies below 1 MeV, we show that the range of spectral measurements can be significantly extended by simultaneous use of absorbers of suitable thicknesses. Examples from laser-plasma interactions are presented, and quantitative results on proton energies and particle numbers are compared to those obtained from a time-of-flight detector. The spectrum end points of continuous energy distributions have been determined with both detector types and coincide within 50-100 keV.
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February 2018
Research Article|
February 07 2018
Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector
M. Seimetz
;
M. Seimetz
a)
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
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P. Bellido;
P. Bellido
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
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P. García;
P. García
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
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P. Mur;
P. Mur
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
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A. Iborra;
A. Iborra
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
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A. Soriano;
A. Soriano
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
2
Departament d’Informàtica, Universitat de València
, Av. de la Universitat s/n, 46100 Burjassot, Spain
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T. Hülber
;
T. Hülber
3
Radosys Kft.
, Vegyész u. 17-27, 1116 Budapest, Hungary
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J. García López;
J. García López
4
Departamento Física Atómica, Molecular y Nuclear, Universidad de Sevilla
, Av. Reina Mercedes s/n, 41012 Sevilla, Spain
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M. C. Jiménez-Ramos;
M. C. Jiménez-Ramos
5
Centro Nacional de Aceleradores (CNA), U. Sevilla–J. Andalucía–CSIC
, Avda. Thomas Alva Edison 7, 41092 Sevilla, Spain
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R. Lera;
R. Lera
6
Proton Laser Applications S.L. (PLA)
, Avda. Vilafranca del Penedès 11, 08734 Olèrdola, Spain
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A. Ruiz-de la Cruz;
A. Ruiz-de la Cruz
6
Proton Laser Applications S.L. (PLA)
, Avda. Vilafranca del Penedès 11, 08734 Olèrdola, Spain
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I. Sánchez
;
I. Sánchez
6
Proton Laser Applications S.L. (PLA)
, Avda. Vilafranca del Penedès 11, 08734 Olèrdola, Spain
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R. Zaffino
;
R. Zaffino
7
Instituto de Microelectrónica de Barcelona (IMB-CNM, CSIC), C/ dels Til.lers Campus UAB
, 08193 Cerdanyola del Vallès (Barcelona), Spain
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L. Roso;
L. Roso
8
Centro de Láseres Pulsados (CLPU), Calle del Adaja
, 37185 Villamayor, Spain
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J. M. Benlloch
J. M. Benlloch
1
Instituto de Instrumentación para Imagen Molecular (I3M), CSIC–Universitat Politècnica de València
, Camino de Vera s/n, Ed. 8B-N-1a, 46022 Valencia, Spain
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a)
Author to whom correspondence should be addressed: [email protected]
Rev. Sci. Instrum. 89, 023302 (2018)
Article history
Received:
October 17 2017
Accepted:
January 22 2018
Citation
M. Seimetz, P. Bellido, P. García, P. Mur, A. Iborra, A. Soriano, T. Hülber, J. García López, M. C. Jiménez-Ramos, R. Lera, A. Ruiz-de la Cruz, I. Sánchez, R. Zaffino, L. Roso, J. M. Benlloch; Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector. Rev. Sci. Instrum. 1 February 2018; 89 (2): 023302. https://doi.org/10.1063/1.5009587
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