Physical and dosimetric characteristics of radiophotoluminescent glass from two-photon excitation microscopy

We investigate the physical and dosimetric characteristics of Ag-activated phosphate glass exposed to proton beams with various energies. We present time-resolved blue and orange radiophotoluminescent (RPL) spectra and examine the dependence of the peak wavelengths and RPL area intensities on gate t...

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Veröffentlicht in:Radiation measurements 2021-01, Vol.140, p.106473, Article 106473
Hauptverfasser: Kurobori, Toshio, Kada, Wataru, Yanagida, Yuka, Koguchi, Yasuhiro, Nanto, Hidehito
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Sprache:eng
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Zusammenfassung:We investigate the physical and dosimetric characteristics of Ag-activated phosphate glass exposed to proton beams with various energies. We present time-resolved blue and orange radiophotoluminescent (RPL) spectra and examine the dependence of the peak wavelengths and RPL area intensities on gate time. Moreover, we consider various micro-scale 3D patterns written on Ag-activated glass by a focused proton beam and evaluate their orange and blue RPL axial-profiles using two-photon excitation microscopy. Finally, we discuss the remarkable broadening of the Bragg curve observed in Ag-activated glass and argue that it should be attributed to the saturation effect and/or non-linearity effect from the viewpoint of the relation between the dose delivered and the signal. •Time-resolved RPL spectra in Ag-activated glass are examined.•Micro-scale patterns written by proton beams are studied by two-photon confocal microscopy.•Bragg curves of Ag-activated glass and LiF irradiated with protons are compared.•Remarkable broadening of the Bragg curve is due to saturation and/or non-linearity effects.
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2020.106473