skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In situ diagnostics of the crystal-growth process through neutron imaging: application to scintillators

Abstract

Neutrons are known to be unique probes in situations where other types of radiation fail to penetrate samples and their surrounding structures. In this paper it is demonstrated how thermal and cold neutron radiography can provide time-resolved imaging of materials while they are being processed (e.g.while growing single crystals). The processing equipment, in this case furnaces, and the scintillator materials are opaque to conventional X-ray interrogation techniques. The distribution of the europium activator within a BaBrCl:Eu scintillator (0.1 and 0.5% nominal doping concentrations per mole) is studiedin situduring the melting and solidification processes with a temporal resolution of 5–7 s. The strong tendency of the Eu dopant to segregate during the solidification process is observed in repeated cycles, with Eu forming clusters on multiple length scales (only for clusters larger than ~50 µm, as limited by the resolution of the present experiments). It is also demonstrated that the dopant concentration can be quantified even for very low concentration levels (~0.1%) in 10 mm thick samples. The interface between the solid and liquid phases can also be imaged, provided there is a sufficient change in concentration of one of the elements with a sufficient neutron attenuation cross section. Tomographic imaging ofmore » the BaBrCl:0.1%Eu sample reveals a strong correlation between crystal fractures and Eu-deficient clusters. The results of these experiments demonstrate the unique capabilities of neutron imaging forin situdiagnostics and the optimization of crystal-growth procedures.« less

Authors:
 [1];  [2];  [3];  [3];  [3];  [4];  [4];  [5];  [5];  [6];  [7];  [3];  [3]
  1. Univ. of California, Berkeley, CA (United States). Space Sciences Lab.
  2. Technical Univ. of Denmark, Lyngby (Denmark); European Spallation Source (ESS), Lund (Sweden)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. European Spallation Source (ESS), Lund (Sweden)
  7. Technical Univ. of Denmark, Lyngby (Denmark)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1378976
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Crystallography (Online)
Additional Journal Information:
Journal Name: Journal of Applied Crystallography (Online); Journal Volume: 49; Journal Issue: 3; Journal ID: ISSN 1600-5767
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; neutron imaging; non-destructive testing; crystal growth; scintillators; in situ diagnostics

Citation Formats

Tremsin, Anton S., Makowska, Małgorzata G., Perrodin, Didier, Shalapska, Tetiana, Khodyuk, Ivan V., Trtik, Pavel, Boillat, Pierre, Vogel, Sven C., Losko, Adrian S., Strobl, Markus, Kuhn, L. Theil, Bizarri, Gregory A., and Bourret-Courchesne, Edith D. In situ diagnostics of the crystal-growth process through neutron imaging: application to scintillators. United States: N. p., 2016. Web. doi:10.1107/S1600576716004350.
Tremsin, Anton S., Makowska, Małgorzata G., Perrodin, Didier, Shalapska, Tetiana, Khodyuk, Ivan V., Trtik, Pavel, Boillat, Pierre, Vogel, Sven C., Losko, Adrian S., Strobl, Markus, Kuhn, L. Theil, Bizarri, Gregory A., & Bourret-Courchesne, Edith D. In situ diagnostics of the crystal-growth process through neutron imaging: application to scintillators. United States. doi:10.1107/S1600576716004350.
Tremsin, Anton S., Makowska, Małgorzata G., Perrodin, Didier, Shalapska, Tetiana, Khodyuk, Ivan V., Trtik, Pavel, Boillat, Pierre, Vogel, Sven C., Losko, Adrian S., Strobl, Markus, Kuhn, L. Theil, Bizarri, Gregory A., and Bourret-Courchesne, Edith D. Tue . "In situ diagnostics of the crystal-growth process through neutron imaging: application to scintillators". United States. doi:10.1107/S1600576716004350. https://www.osti.gov/servlets/purl/1378976.
@article{osti_1378976,
title = {In situ diagnostics of the crystal-growth process through neutron imaging: application to scintillators},
author = {Tremsin, Anton S. and Makowska, Małgorzata G. and Perrodin, Didier and Shalapska, Tetiana and Khodyuk, Ivan V. and Trtik, Pavel and Boillat, Pierre and Vogel, Sven C. and Losko, Adrian S. and Strobl, Markus and Kuhn, L. Theil and Bizarri, Gregory A. and Bourret-Courchesne, Edith D.},
abstractNote = {Neutrons are known to be unique probes in situations where other types of radiation fail to penetrate samples and their surrounding structures. In this paper it is demonstrated how thermal and cold neutron radiography can provide time-resolved imaging of materials while they are being processed (e.g.while growing single crystals). The processing equipment, in this case furnaces, and the scintillator materials are opaque to conventional X-ray interrogation techniques. The distribution of the europium activator within a BaBrCl:Eu scintillator (0.1 and 0.5% nominal doping concentrations per mole) is studiedin situduring the melting and solidification processes with a temporal resolution of 5–7 s. The strong tendency of the Eu dopant to segregate during the solidification process is observed in repeated cycles, with Eu forming clusters on multiple length scales (only for clusters larger than ~50 µm, as limited by the resolution of the present experiments). It is also demonstrated that the dopant concentration can be quantified even for very low concentration levels (~0.1%) in 10 mm thick samples. The interface between the solid and liquid phases can also be imaged, provided there is a sufficient change in concentration of one of the elements with a sufficient neutron attenuation cross section. Tomographic imaging of the BaBrCl:0.1%Eu sample reveals a strong correlation between crystal fractures and Eu-deficient clusters. The results of these experiments demonstrate the unique capabilities of neutron imaging forin situdiagnostics and the optimization of crystal-growth procedures.},
doi = {10.1107/S1600576716004350},
journal = {Journal of Applied Crystallography (Online)},
number = 3,
volume = 49,
place = {United States},
year = {Tue Apr 12 00:00:00 EDT 2016},
month = {Tue Apr 12 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

The quest for the ideal inorganic scintillator
journal, June 2003

  • Derenzo, S. E.; Weber, M. J.; Bourret-Courchesne, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 505, Issue 1-2, p. 111-117
  • DOI: 10.1016/S0168-9002(03)01031-3

BaBrI:Eu2+, a new bright scintillator
journal, January 2010

  • Bourret-Courchesne, E. D.; Bizarri, G.; Hanrahan, S. M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 613, Issue 1, p. 95-97
  • DOI: 10.1016/j.nima.2009.11.036

Eu2+-doped Ba2CsI5, a new high-performance scintillator
journal, December 2009

  • Bourret-Courchesne, E. D.; Bizarri, G.; Borade, R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 612, Issue 1, p. 138-142
  • DOI: 10.1016/j.nima.2009.10.146