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Scaling-induced enhancement of X-ray luminescence in CsI(Na) crystals.
- Source :
-
Applied Physics Letters . 5/6/2013, Vol. 102 Issue 18, p181107. 4p. 1 Black and White Photograph, 1 Chart, 4 Graphs. - Publication Year :
- 2013
-
Abstract
- We report on the diameter dependence luminescence property of CsI(Na) crystals under X-ray excitation. When CsI(Na) crystal diameter decreases to nano-scale, the X-ray excited luminescence decay time is speeding up from ∼600 ns to ∼10 ns and 420 nm Na-related cathodeluminescence is affected drastically. The reason is confirmed that diameter reduction leads surface effect to accelerate the excitons' quenching. These measurement results identify a critical distinguished boundary ∼20 μm) of crystal diameter, which provide a new way to potential application of CsI(Na) crystals in the development of fast X-ray and gamma scintillator film detectors with large area. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LUMINESCENCE
*CESIUM iodide
*SODIUM
*CRYSTALS
*DIAMETER
*RADIOGRAPHIC films
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 102
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 87545118
- Full Text :
- https://doi.org/10.1063/1.4804368