Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator

Hawrami, Rastgo; Ariesanti, Elsa; Wei, Hua; Finkelstein, Jeffrey; Glodo, Jarek; Shah, Kanai

doi:10.1021/acs.cgd.7b00583

Title: Tl₂LiYCl₆: Large Diameter, High Performing Dual Mode Scintillator

Abstract

Tl₂LiYCl₆:Ce (TLYC) is a recently discovered dual mode gamma-ray and neutron scintillator. So far small crystals of this composition have been studied, but for practical applications with affordable price, large-scale crystals are required. In this work, we present successful efforts to grow crack-free single crystals with sizes up to $$\varnothing$$1" × 5.5". A variety of experimental techniques were employed to investigate the scintillation properties. A $$\varnothing$$1" × 1.2" TLYC cylinder has a light yield of 25,000 ph/MeV, and its energy resolution is better than 4% at 662 keV. The gamma equivalent energy (GEE) produced by thermal neutron is 1.89 MeVee, along with a neutron induced light yield of 47,000 ph/n. Pulse shape discrimination (PSD) between gamma-rays and neutrons has been successfully shown with a current Figure-of-Merit (FOM) of 2.4. This paper explores the crystal growth, scintillation properties, and potential applications of TLYC.

Authors:

^[1]; Ariesanti, Elsa ^[1];

^[1]; Finkelstein, Jeffrey ^[1]; Glodo, Jarek ^[1]; Shah, Kanai ^[1]

Radiation Monitoring Devices, Inc., Watertown, MA (United States)

Publication Date:: Mon Jun 12 00:00:00 EDT 2017

Research Org.:: Radiation Monitoring Devices, Inc., Watertown, MA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1534433

Grant/Contract Number:: SC0015793

Resource Type:: Accepted Manuscript

Journal Name:: Crystal Growth and Design

Additional Journal Information:: Journal Volume: 17; Journal Issue: 7; Journal ID: ISSN 1528-7483

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Chemistry; Crystallography; Materials science; Crystals; Crystallization; Crystal structure; Light; Energy

Citation Formats


                    Hawrami, Rastgo, Ariesanti, Elsa, Wei, Hua, Finkelstein, Jeffrey, Glodo, Jarek, and Shah, Kanai. Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator.  United States: N. p., 2017. 
Web.  doi:10.1021/acs.cgd.7b00583.

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                    Hawrami, Rastgo, Ariesanti, Elsa, Wei, Hua, Finkelstein, Jeffrey, Glodo, Jarek, & Shah, Kanai. Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator.  United States.  https://doi.org/10.1021/acs.cgd.7b00583

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                    Hawrami, Rastgo, Ariesanti, Elsa, Wei, Hua, Finkelstein, Jeffrey, Glodo, Jarek, and Shah, Kanai. Mon .  
"Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator".  United States.  https://doi.org/10.1021/acs.cgd.7b00583.  https://www.osti.gov/servlets/purl/1534433.

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@article{osti_1534433,

  title        = {Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator},

  author       = {Hawrami, Rastgo and Ariesanti, Elsa and Wei, Hua and Finkelstein, Jeffrey and Glodo, Jarek and Shah, Kanai},

  abstractNote = {Tl2LiYCl6:Ce (TLYC) is a recently discovered dual mode gamma-ray and neutron scintillator. So far small crystals of this composition have been studied, but for practical applications with affordable price, large-scale crystals are required. In this work, we present successful efforts to grow crack-free single crystals with sizes up to $\varnothing$1" × 5.5". A variety of experimental techniques were employed to investigate the scintillation properties. A $\varnothing$1" × 1.2" TLYC cylinder has a light yield of 25,000 ph/MeV, and its energy resolution is better than 4% at 662 keV. The gamma equivalent energy (GEE) produced by thermal neutron is 1.89 MeVee, along with a neutron induced light yield of 47,000 ph/n. Pulse shape discrimination (PSD) between gamma-rays and neutrons has been successfully shown with a current Figure-of-Merit (FOM) of 2.4. This paper explores the crystal growth, scintillation properties, and potential applications of TLYC.},

  doi          = {10.1021/acs.cgd.7b00583},

  journal      = {Crystal Growth and Design},

  number       = 7,

  volume       = 17,

  place        = {United States},

  year         = {Mon Jun 12 00:00:00 EDT 2017},

  month        = {Mon Jun 12 00:00:00 EDT 2017}

}

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Figure 1: A two-zone high temperature furnace (constructed by the Mellen Company®) equipped with a stepper motor driven linear slides for ampoule translation.

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Title: Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator

Abstract

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Title: Tl₂LiYCl₆: Large Diameter, High Performing Dual Mode Scintillator