Scintillation from NaI nanoparticles formed in CsI:Na thin films

被引：0
|
作者：
Nakayama, Masaaki [1 ]
Ando, Naoaki [1 ]
Miyoshi, Takashi [1 ]
Hirai, Jun [1 ]
Nishimura, Hitoshi [1 ]
机构：
[1] Department of Applied Physics, Graduate School of Engineering, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
来源：
| 1600年 / Japan Society of Applied Physics卷 / 41期
关键词：
Atomic force microscopy - Electron energy levels - Excitons - Film growth - Heat treatment - Phosphorescence - Scintillation - Semiconductor doping - Sodium compounds - Thin films;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We have investigated the scintillation mechanism of Na-doped CsI (CsI:Na) thin films grown by vacuum deposition from the aspects of their optical and structural properties. It is found from measurements of X-ray excitation luminescence that the Na-related band with the peak energy of 2.95 eV, which is conventionally used for scintillators, is markedly enhanced by heat treatment. The results of atomic force microscope measurements clearly indicate that the heat treatment causes the formation of nanoparticles. Considering the excitation spectrum of the Na-related luminescence, we conclude that the scintillation of CsI:Na originates from the self-trapped exciton in NaI nanoparticles, which presents a novel model of the scintillation mechanisms.
引用
收藏
相关论文
共 50 条
  • [31] A possible reason for non-proportionality of response in NaI:TI and CsI:TI scintillation crystals
    Kudin, A. M.
    Grinyov, B. V.
    Gres', V. Yu.
    Mitichkin, A. I.
    FUNCTIONAL MATERIALS, 2006, 13 (01): : 54 - 59
  • [32] EXPERIMENTAL CALIBRATION OF SCINTILLATION PULSE HEIGHTS OF THIN CSI CRYSTALS
    WORTH, DC
    HASTE, GR
    REVIEW OF SCIENTIFIC INSTRUMENTS, 1960, 31 (02): : 169 - 170
  • [33] Simulation of transfer properties of light photons in CsI:Na scintillation layer
    Guo, J.
    Niu, H.
    Zhou, B.
    Guangzi Xuebao/Acta Photonica Sinica, 2001, 30 (07): : 801 - 806
  • [34] Effect of Humidity on Scintillation Performance in Na and Tl Activated CsI Crystals
    Yang, Pin
    Harmon, Charles D.
    Doty, F. Patrick
    Ohlhausen, James A.
    IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2014, 61 (02) : 1024 - 1031
  • [35] SCINTILLATION RESPONSE FUNCTION AND DECAY TIME OF CSI(NA) TO CHARGED PARTICLES
    KESZTHEL.S
    HREHUSS, G
    NUCLEAR INSTRUMENTS & METHODS, 1969, 68 (01): : 9 - +
  • [36] IONIC CONTAMINATION OF THIN SILICA FILMS FROM NAI AND KCL SOLUTIONS
    CHOQUET, C
    PLOSSU, C
    BERENGUER, M
    BALLAND, B
    BARBOTTIN, G
    THIN SOLID FILMS, 1988, 167 (1-2) : 45 - 56
  • [37] Temperature Sensing with Thin Films of Flame-Formed Carbon Nanoparticles
    Minutolo, Patrizia
    De Falco, Gianluigi
    Commodo, Mario
    Aloisio, Alberto
    D'Anna, Andrea
    APPLIED SCIENCES-BASEL, 2022, 12 (15):
  • [38] Luminescence and scintillation properties of Na-activated CsI-CsBr crystals
    Shakhova, KV
    Panova, AN
    Goriletsky, VI
    Prikhod'ko, YA
    Gavrylyuk, VP
    Korsunova, SP
    Kosinov, NN
    RADIATION MEASUREMENTS, 2001, 33 (05) : 769 - 771
  • [39] Kinetic and scintillation characteristics of CsI(Na) crystals grown under melt mixing
    Goriletsky, V.I.
    Grinyov, B.V.
    Panova, A.M.
    Shakhova, K.V.
    Vinograd, E.L.
    Korsunov, S.P.
    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 1999, 159 (01): : 111 - 115
  • [40] Kinetic and scintillation characteristics of CsI(Na) crystals grown under melt mixing
    Goriletsky, VI
    Grinyov, BV
    Panova, AM
    Shakhova, KV
    Vinograd, EL
    Korsunov, SP
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1999, 159 (1-2): : 111 - 115
12345