The paper concerns the analysis of spatial distributions of visible photoluminescence of optically active F2 and F3+ color centers created in lithium fluoride crystals by irradiation with proton beams. Spectrally integrated photoluminescent maps are detected in a fluorescence microscope and numerically elaborated to gather pieces of information regarding both the beam characteristics and the material response. A method based on two independent measurements (Bragg curve and beam transversal map) is developed to evaluate the saturation dose defined as the value above which the photoluminescence intensity begins saturating up to an asymptotic maximum. The paper describes the procedure and demonstrates its application to the experimental case of LiF crystals irradiated by a proton beam of 18 MeV nominal energy.

Evaluation of saturation dose in spatial distributions of color centers generated by 18 MeV proton beams in lithium fluoride

Nichelatti E.;Piccinini M.;Ronsivalle C.;Picardi L.;Vincenti M. A.;
2020

Abstract

The paper concerns the analysis of spatial distributions of visible photoluminescence of optically active F2 and F3+ color centers created in lithium fluoride crystals by irradiation with proton beams. Spectrally integrated photoluminescent maps are detected in a fluorescence microscope and numerically elaborated to gather pieces of information regarding both the beam characteristics and the material response. A method based on two independent measurements (Bragg curve and beam transversal map) is developed to evaluate the saturation dose defined as the value above which the photoluminescence intensity begins saturating up to an asymptotic maximum. The paper describes the procedure and demonstrates its application to the experimental case of LiF crystals irradiated by a proton beam of 18 MeV nominal energy.
Bragg curve; Color centers; Dose map; Lithium fluoride; Photoluminescence; Protons; Radiation detectors
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/53057
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
social impact