Physical and dosimetric characteristics of radiophotoluminescent glass from two-photon excitation microscopy. (January 2021)

• Record Type: Journal Article
• Authors: Kurobori, Toshio; Kada, Wataru; Yanagida, Yuka; Koguchi, Yasuhiro; Nanto, Hidehito
• Is Part Of: Radiation measurements. Volume 140(2020:Sep.)
• Publication Date: 2021-01
• Subjects: Radiophotoluminescence (RPL) -- Ag-activated phosphate glass -- Proton beam writing -- Two-photon microscopy -- Bragg curve; Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2020.106473
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: 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. Highlights: 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.