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Strontium and barium iodide high light yield scintillators
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10.1063/1.2885728
/content/aip/journal/apl/92/8/10.1063/1.2885728
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/8/10.1063/1.2885728

Figures

Image of FIG. 1.
FIG. 1.

(Top frame) Beta-excited radioluminescence spectra acquired of ; (inset) crystal grown at RMD under excitation. (Lower frame) Beta-excited radioluminescence from three crystals; (inset) crystal from Fisk University under excitation. For , the first crystal was grown from as-received powders (red), the second crystal was grown from powders that had been zone refined once (black), and the third crystal was grown under ultrapure conditions. Light yields are plotted along with that of CsI(Tl) (green), and may be compared in an absolute sense.

Image of FIG. 2.
FIG. 2.

Time-resolved luminescence decays acquired by excitation with laser pulses at . emission recorded at for emission and at for “impurity recombination” band.

Image of FIG. 3.
FIG. 3.

Postulated energy level diagram for the and systems.

Image of FIG. 4.
FIG. 4.

Pulse-height spectra acquired of a crystal grown at RMD (upper frame), yielding an energy resolution of 3.7% at , and of the second crystal of (lower frame), yielding an energy resolution at of 8.1%.

Image of FIG. 5.
FIG. 5.

Pulse-height spectra provide the energy resolution as a function of gamma ray energy. Energy resolution is comparable between and for all energies.

Image of FIG. 6.
FIG. 6.

Relative light yields as a function of electron energy acquired using the SLYNCI reveal a proportional response for , in comparison to both and NaI(Tl).

Tables

Generic image for table
Table I.

Beta-excited light yields are acquired with a silicon CCD camera that integrates the luminescence spectrum over ; spectral sensitivity corrected for CCD and grating. Gamma-excited light yields are determined via pulse-height spectra, corrected for spectral sensitivity, and acquired at using a Hamamatsu R980 PMT ( shaping time).

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/content/aip/journal/apl/92/8/10.1063/1.2885728
2008-02-28
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strontium and barium iodide high light yield scintillators
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/8/10.1063/1.2885728
10.1063/1.2885728
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