Radiation-induced changes in the optical properties of NaMgF3(Sm): Observation of resettable Sm radio-photoluminescence

被引：25
作者：
Schuyt, J. J. [1 ]
Williams, G. V. M. [1 ]
机构：
[1] Victoria Univ Wellington, MacDiarmid Inst Adv Mat & Nanotechnol, SCPS, POB 600, Wellington 6140, New Zealand
来源：
MATERIALS RESEARCH BULLETIN | 2018年 / 106卷
关键词：
Fluorides; Optical properties; Luminescence; Radiation damage; Defects; STIMULATED LUMINESCENCE; THERMOLUMINESCENCE; RADIOLUMINESCENCE; IRRADIATION; OSL;
D O I：
10.1016/j.materresbull.2018.06.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stable radio-photoluminescence (RPL) is observed in NaMgF3(Sm) after X-ray irradiation due to valence conversion of Sm3+ to Sm2+. This valence conversion can be reversed by deep UV (254 nm) illumination. It is likely that this reversible process occurs via defects near some of the Sm3+ sites that act as hole traps. The ratio of the Sm2+/Sm3+ RPL emissions follows an exponential-type curve dependence on X-ray dose where the ratio saturates above similar to 500 Gy. Optically stimulated luminescence (OSL) is also observed but only from Sm3+ and primarily from electrons trapped at F-centers. The OSL response is demonstrated to be linear up to 100 Gy. Thus, NaMgF3(Sm) has potential as a dosimeter where individual irradiations can be monitored via OSL and the total cumulative dose via non-destructive RPL readout. The RPL can be optically reset when required.
引用
收藏
页码：455 / 458
页数：4
相关论文
共 32 条
  • [1] Akselrod MS, 2007, RADIAT MEAS, V41, pS78, DOI DOI 10.1016/J.RADMEAS.2007.01.004
  • [2] Rare earth (Ce3+) activated NaMgF3 phosphor synthesised by hydrothermal method and its optical properties
    Daniel, D. Joseph
    Raja, A.
    Kim, H. J.
    Ramasamy, P.
    [J]. OPTIK, 2018, 158 : 712 - 720
  • [3] OSL studies of alkali fluoroperovskite single crystals for radiation dosimetry
    Daniel, D. Joseph
    Raja, A.
    Madhusoodanan, U.
    Annalakshmi, O.
    Ramasamy, P.
    [J]. OPTICAL MATERIALS, 2016, 58 : 497 - 503
  • [4] Thermoluminescence characteristics and dosimetric aspects of fluoroperovskites (NaMgF3:Eu2+,Ce3+)
    Daniel, D. Joseph
    Annalakshmi, O.
    Madhusoodanan, U.
    Ramasamy, P.
    [J]. JOURNAL OF RARE EARTHS, 2014, 32 (06) : 496 - 500
  • [5] A luminescence study of NaMgF3:Dy3+ and NaMgF3:Nd3+ for applications in radiation dosimetry
    Donaldson, J.
    Williams, G. V. M.
    [J]. INTERNATIONAL JOURNAL OF NANOTECHNOLOGY, 2017, 14 (1-6) : 558 - 565
  • [6] Photoluminescence, radioluminescence, and thermoluminescence in NaMgF3 activated with Ni2+ and Er3+
    Donaldson, Jethro
    Williams, Grant V. M.
    [J]. JOURNAL OF LUMINESCENCE, 2016, 173 : 279 - 285
  • [7] Optically stimulated luminescence in NaMgF3: Eu2+
    Dotzler, C.
    Williams, G. V. M.
    Rieser, U.
    Edgar, A.
    [J]. APPLIED PHYSICS LETTERS, 2007, 91 (12)
  • [8] NEW MEASUREMENTS OF THE EMISSION-SPECTRA OF SM2+ IN KMGF3 AND NAMGF3 CRYSTALS
    GACON, JC
    GROS, A
    BILL, H
    WICKY, JP
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1981, 42 (07) : 587 - 593
  • [9] Henderson B., 2006, OPTICAL SPECTROSCOPY
  • [10] Vacuum ultraviolet synchrotron measurements of excitons in NaMgF3:Yb2+
    Hughes-Currie, Rosa B.
    Ivanovskikh, Konstantin V.
    Reid, Michael F.
    Wells, Jon-Paul R.
    Reeves, Roger J.
    Meijerink, Andries
    [J]. JOURNAL OF LUMINESCENCE, 2016, 169 : 419 - 421
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