Scintillation properties of Eu-doped LiF-CaF2 eutectic for neutron detectors with different Eu concentration

Author

Fukuda, Kenji ; Yanagida, T. ; Fujimoto, Yasutaka ; Kawaguchi, Noriyuki

Author_Institution

Tokuyama Corp., Shunan, Japan

fYear

2013

fDate

Oct. 27 2013-Nov. 2 2013

Firstpage

1

Lastpage

5

Abstract

Eu²⁺-doped LiF/CaF₂ eutectic scintillators with different Eu concentrations were fabricated by the simple solidification method. Eu concentrations were 0.005, 0.02, 0.05, 0.1, 0.3, 1, 3, and 5%, and they looked visibly semitransparent. In SEM analysis, fine lamellar structure was observed in Eu low concentration samples. Radioluminescence spectra were collected under X-ray exposure and Eu²⁺ 5d-4f emission appeared at 435 nm. Finally, thermal neutrons were irradiated to samples and the scintillation light yields monotonically decreased with Eu concentrations.

Keywords

X-ray effects; solid scintillation detectors; solidification; Eu concentration; Eu low concentration samples; Eu²⁺ 5d-4f emission; Eu²⁺-doped CaF₂ eutectic scintillator; Eu²⁺-doped LiF eutectic scintillator; SEM analysis; X-ray exposure; fine lamellar structure; neutron detectors; radioluminescence spectra; scintillation light; solidification method; Detectors; Materials; Neutrons; Optical imaging; Optimized production technology; Photoluminescence; Photonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4799-0533-1

Type

conf

DOI

10.1109/NSSMIC.2013.6829637

Filename

6829637