Back to Search
Start Over
Multi-ampoule Bridgman growth of halide scintillator crystals using the self-seeding method.
- Source :
-
Journal of Crystal Growth . Jul2017, Vol. 470, p20-26. 7p. - Publication Year :
- 2017
-
Abstract
- We investigate the multi-ampoule growth at 25 mm diameter of ternary iodide single crystal scintillator KCaI 3 :Eu using the randomly oriented self-seeded Bridgman method. We compare scintillation performance between cubic inch scale crystals containing small variations of low nominal europium concentrations previously shown to balance light yield with self-absorption in the host crystal. Growth conditions were optimized in the developmental furnace and four 2 in 3 KCaI 3 :Eu crystals were grown simultaneously producing a total of six 25 mm × 25 mm cylinders. Small variations in activator concentration did not result in significant performance differences among the six measured crystals. A range of energy resolutions of 3.5–4.7% at 662 keV was achieved, surpassing that of NaI:Tl crystals commonly used in spectroscopic detection applications. The function and basic design of the multi-ampoule furnace as well as the process of growing single crystals of KCaI 3 is included here. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SCINTILLATORS
*HALIDES
*CRYSTAL growth
*SINGLE crystals
*EUROPIUM
Subjects
Details
- Language :
- English
- ISSN :
- 00220248
- Volume :
- 470
- Database :
- Academic Search Index
- Journal :
- Journal of Crystal Growth
- Publication Type :
- Academic Journal
- Accession number :
- 123131066
- Full Text :
- https://doi.org/10.1016/j.jcrysgro.2017.03.038