Back to Search
Start Over
Luminescence properties and scintillation response in Ce3+-doped Y2Gd1Al5-xGaxO12(x = 2, 3, 4) single crystals.
- Source :
- Journal of Applied Physics; 2014, Vol. 116 Issue 8, p083505-1-083505-7, 7p, 4 Charts, 9 Graphs
- Publication Year :
- 2014
-
Abstract
- The compositional dependence of luminescence properties and scintillation response were investigated in Ce<superscript>3+</superscript>-doped Y<subscript>2</subscript>Gd<subscript>1</subscript>Al<subscript>5-x</subscript>GaxO<subscript>12</subscript> (x=2, 3, 4) single crystals. The Gd<superscript>3+</superscript> → Ce<superscript>3+</superscript> energy transfer was evidenced by photoluminescence excitation spectra of Ce<superscript>3+</superscript> emission. With increasing Ga content in the garnet host, the Ce<superscript>3+</superscript> luminescence from the lowest 5d level (5d1) is shifted toward higher energy due to the decrease in the crystal field splitting of the 5d levels. Light yield (LY) and its dependence on the amplifier shaping time were measured under excitation with γ-rays High LY value of ~38 000 ph/MeV was obtained for a Y<subscript>2</subscript>Gd<subscript>1</subscript>Al<subscript>5-x</subscript>GaxO<subscript>12</subscript>:Ce sample. Scintillation decay was measured with an extended dynamical and temporal scale under the nanosecond pulse soft X-ray excitation. The decrease of both LY value and relative contribution of slower decay component in the scintillation response was observed with increasing Ga content in the garnet host. [ABSTRACT FROM AUTHOR]
- Subjects :
- LUMINESCENCE
SCINTILLATION counters
CRYSTALS
EXCITATION (Physiology)
TEMPORAL bone
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 116
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 97850188
- Full Text :
- https://doi.org/10.1063/1.4893675