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Growth and Spectroscopy of BaBrI Crystals Activated by Eu2+ Ions.

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Title: Growth and Spectroscopy of BaBrI Crystals Activated by Eu2+ Ions.
Authors: Rusakov, A. I., Shalaev, A. A., Shendrik, R. Yu., Myasnikova, A. S., Subanakov, A. K.
Source: AIP Conference Proceedings; 2019, Vol. 2069 Issue 1, p020002-1-020002-8, 8p, 1 Color Photograph, 1 Black and White Photograph, 1 Chart, 6 Graphs
Subject Terms: LUMINESCENCE spectroscopy, SCINTILLATORS, ABSORPTION spectra, BAND gaps, ENERGY transfer
Abstract: BaBrI crystals containing 0.01 to 8 mol. % of Eu2+ activator have been obtained. The photo- and X-ray luminescence spectra correspond to Eu2+ 5d – 4f characteristic transitions with a maximum at about 3 eV. The scintillation decay time is 400-500 ns (fast component) and 3700–5500 ns (slow component). It has been established that the decay time in BaBrI crystals depends on the activator concentration. In the absorption spectra of BaBrI: Eu2+ crystals, a double peak is observed associated with 4f7 – 4f65d¹ transitions in Eu2+. On the edge of optical absorption, the band gap of 5.2 eV was estimated. We assume the resonant mechanism of energy transfer to the luminescence centers. [ABSTRACT FROM AUTHOR]
Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Growth and Spectroscopy of BaBrI Crystals Activated by Eu<superscript>2+</superscript> Ions.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Rusakov%2C+A%2E+I%2E%22">Rusakov, A. I.</searchLink><br /><searchLink fieldCode="AR" term="%22Shalaev%2C+A%2E+A%2E%22">Shalaev, A. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Shendrik%2C+R%2E+Yu%2E%22">Shendrik, R. Yu.</searchLink><br /><searchLink fieldCode="AR" term="%22Myasnikova%2C+A%2E+S%2E%22">Myasnikova, A. S.</searchLink><br /><searchLink fieldCode="AR" term="%22Subanakov%2C+A%2E+K%2E%22">Subanakov, A. K.</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: AIP Conference Proceedings; 2019, Vol. 2069 Issue 1, p020002-1-020002-8, 8p, 1 Color Photograph, 1 Black and White Photograph, 1 Chart, 6 Graphs
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22LUMINESCENCE+spectroscopy%22">LUMINESCENCE spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22SCINTILLATORS%22">SCINTILLATORS</searchLink><br /><searchLink fieldCode="DE" term="%22ABSORPTION+spectra%22">ABSORPTION spectra</searchLink><br /><searchLink fieldCode="DE" term="%22BAND+gaps%22">BAND gaps</searchLink><br /><searchLink fieldCode="DE" term="%22ENERGY+transfer%22">ENERGY transfer</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: BaBrI crystals containing 0.01 to 8 mol. % of Eu<superscript>2+</superscript> activator have been obtained. The photo- and X-ray luminescence spectra correspond to Eu<superscript>2+</superscript> 5d – 4f characteristic transitions with a maximum at about 3 eV. The scintillation decay time is 400-500 ns (fast component) and 3700–5500 ns (slow component). It has been established that the decay time in BaBrI crystals depends on the activator concentration. In the absorption spectra of BaBrI: Eu<superscript>2+</superscript> crystals, a double peak is observed associated with 4f<superscript>7</superscript> – 4f<superscript>6</superscript>5d¹ transitions in Eu<superscript>2+</superscript>. On the edge of optical absorption, the band gap of 5.2 eV was estimated. We assume the resonant mechanism of energy transfer to the luminescence centers. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1063/1.5089830
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 020002-1
    Subjects:
      – SubjectFull: LUMINESCENCE spectroscopy
        Type: general
      – SubjectFull: SCINTILLATORS
        Type: general
      – SubjectFull: ABSORPTION spectra
        Type: general
      – SubjectFull: BAND gaps
        Type: general
      – SubjectFull: ENERGY transfer
        Type: general
    Titles:
      – TitleFull: Growth and Spectroscopy of BaBrI Crystals Activated by Eu2+ Ions.
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            NameFull: Rusakov, A. I.
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            NameFull: Shalaev, A. A.
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            NameFull: Shendrik, R. Yu.
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            NameFull: Myasnikova, A. S.
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            NameFull: Subanakov, A. K.
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              M: 01
              Text: 2019
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