Characterisation and comparison of micropatterns written using a proton beam in Ag-activated glass and LiF crystal observed by single- and multi-photon microscopy. (June 2020)

• Record Type: Journal Article
• Authors: Kurobori, Toshio; Kada, Wataru; Yanagida, Yuka; Koguchi, Yasuhiro; Yamamoto, Takayoshi; Jakšić, Milko
• Is Part Of: Radiation measurements. Volume 134(2020:Mar.)
• Publication Date: 2020-06
• Subjects: Radiophotoluminescence (RPL) -- Ag-activated phosphate glass -- Lithium fluoride (LiF) -- Proton beam writing -- Single- and multi-photon microscopes; 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.2020.106314
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: We investigate the characterisation and comparison of micro-scale patterns in silver-activated phosphate glass and lithium fluoride (LiF) single crystal written by a proton beam with an energy range of 1.7–4.5 MeV. A variety of micro-scale structures based on blue and orange luminescent Ag-related colour centres in Ag-activated glass and green and red luminescent F-aggregated colour centres in LiF are visualised by combining single- and two-photon confocal microscopes equipped with a blue continuous wave (cw) laser diode and a femtosecond (fs) laser in the near-infrared (NIR) region, respectively. Two- and three-dimensional (2D and 3D) reconstructed images are analytically evaluated using lateral/axial RPL intensity mapping. In addition, the origins of different RPL intensity profiles in a plateau region along the axial direction in both materials are examined and discussed. Highlights: The micro-scale patterns in RPL Ag-activated glass written by a proton beam were visualised using two-photon microscopy. The Bragg curves of Ag-activated glass and LiF crystal were compared single-with multi-photon microscopes. The origins of different dose distribution profiles along the axial direction were investigated and discussed.