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Title: Correlation of Non-proportionality and Scintillation Properties with Cerium Concentration in YAlO 3:Ce

Abstract

Cerium doped YAlO3 (YAP:Ce) is an interesting oxide scintillator in that it exhibits a wider range of light yield non-proportionality on a sample-to-sample basis than most other well-known oxide scintillators. In general, most oxide materials, such as BGO and LSO:Ce, are thought to have an intrinsic proportional response that is nearly constant between samples and independent of growth conditions. Since light yield nonproportionality is responsible for degrading the achievable energy resolution of all known scintillators, it is important to understand what contributes to the behavior. In this study, in an attempt to understand if the phenomenon can be affected by growth parameters or by other means, seven samples of YAP:Ce were collected from various sources, and eight samples were grown inhouse using the Czochralski method. Based on optical and scintillation measurement as well as direct measurement of the cerium concentration, it was determined that the light yield proportionality in YAlO3:Ce is strongly related to the cerium concentration. Samples that were found to have a higher relative cerium concentration displayed a more proportional light yield response. In addition, it was determined that samples with a higher cerium concentration also exhibit a faster decay time and an enhanced energy resolution when comparedmore » to samples with less cerium. Finally, it was also determined that growth in a reducing atmosphere can effectively suppress a parasitic optical absorption band.« less

Authors:
 [1];  [2];  [1];  [1]; ;  [3];  [1];  [4]
  1. Univ. of Tennessee, Knoxville, TN (United States). Scintillation Materials Research Center
  2. Wake Forest University, Winston-Salem, NC (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States). Department of Nuclear Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1435172
Grant/Contract Number:
AC05-00OR22725; NA0000473
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
IEEE Transactions on Nuclear Science
Additional Journal Information:
Journal Name: IEEE Transactions on Nuclear Science; Journal ID: ISSN 0018-9499
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Scintillator; Non-Proportionality; Energy Resolution

Citation Formats

Donnald, Samuel B., Williams, Richard, Melcher, Charles L., Meng, Fang, Koschan, Merry, Friedrich, Stephan, Johnson, Jesse A., and Hayward, Jason P. Correlation of Non-proportionality and Scintillation Properties with Cerium Concentration in YAlO3:Ce. United States: N. p., 2018. Web. doi:10.1109/TNS.2018.2828428.
Donnald, Samuel B., Williams, Richard, Melcher, Charles L., Meng, Fang, Koschan, Merry, Friedrich, Stephan, Johnson, Jesse A., & Hayward, Jason P. Correlation of Non-proportionality and Scintillation Properties with Cerium Concentration in YAlO3:Ce. United States. doi:10.1109/TNS.2018.2828428.
Donnald, Samuel B., Williams, Richard, Melcher, Charles L., Meng, Fang, Koschan, Merry, Friedrich, Stephan, Johnson, Jesse A., and Hayward, Jason P. Thu . "Correlation of Non-proportionality and Scintillation Properties with Cerium Concentration in YAlO3:Ce". United States. doi:10.1109/TNS.2018.2828428.
@article{osti_1435172,
title = {Correlation of Non-proportionality and Scintillation Properties with Cerium Concentration in YAlO3:Ce},
author = {Donnald, Samuel B. and Williams, Richard and Melcher, Charles L. and Meng, Fang and Koschan, Merry and Friedrich, Stephan and Johnson, Jesse A. and Hayward, Jason P.},
abstractNote = {Cerium doped YAlO3 (YAP:Ce) is an interesting oxide scintillator in that it exhibits a wider range of light yield non-proportionality on a sample-to-sample basis than most other well-known oxide scintillators. In general, most oxide materials, such as BGO and LSO:Ce, are thought to have an intrinsic proportional response that is nearly constant between samples and independent of growth conditions. Since light yield nonproportionality is responsible for degrading the achievable energy resolution of all known scintillators, it is important to understand what contributes to the behavior. In this study, in an attempt to understand if the phenomenon can be affected by growth parameters or by other means, seven samples of YAP:Ce were collected from various sources, and eight samples were grown inhouse using the Czochralski method. Based on optical and scintillation measurement as well as direct measurement of the cerium concentration, it was determined that the light yield proportionality in YAlO3:Ce is strongly related to the cerium concentration. Samples that were found to have a higher relative cerium concentration displayed a more proportional light yield response. In addition, it was determined that samples with a higher cerium concentration also exhibit a faster decay time and an enhanced energy resolution when compared to samples with less cerium. Finally, it was also determined that growth in a reducing atmosphere can effectively suppress a parasitic optical absorption band.},
doi = {10.1109/TNS.2018.2828428},
journal = {IEEE Transactions on Nuclear Science},
number = ,
volume = ,
place = {United States},
year = {Thu Apr 19 00:00:00 EDT 2018},
month = {Thu Apr 19 00:00:00 EDT 2018}
}

Journal Article:
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