The growth and scintillation properties of CsCe 2Cl 7 crystal

• Published in: Journal of crystal growth Vol. 311; no. 1; pp. 128 - 131
• Main Authors: Rooh, Gul, Kang, Heedong, Kim, H.J., Park, H., Doh, Sih-Hong, Kim, Sunghwan
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2008
• Subjects: A1. Energy resolution; A2. Czocralski method; B2. Light yield; B3. Scintillators; 29.40.Mc; B3. Scintillators; B2. Light yield; 29.30.Kv; A1. Energy resolution; 78.70.En; 81.10.Fq; A2. Czocralski method
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/j.jcrysgro.2008.10.020

We report on a new scintillation crystal, CsCe 2Cl 7, for γ-ray spectroscopy. The crystal was grown using the Czocralski pulling method. X-ray excited luminescence measurements of the CsCe 2Cl 7 showed a broad emission band in the wavelength range from 370 to 470 nm with a peak centre at 410 nm. An energy resolution (FWHM of peak position) for the 662 keV full energy peak of 5.5% was observed at room temperature. The results showed a good proportionality for light output versus γ-ray energy. The light output deviation from the linear response is about 10% between the energy range of 31 and 1333 keV. We measured a light yield of 28,000 photons/MeV of absorbed γ-ray energy. The scintillation decay curve of CsCe 2Cl 7 can be described by a single exponential decay function with a decay time of 50 ns. Overall, these measurements clearly indicate that CsCe 2Cl 7 can exhibit attracting scintillation properties, and we believe that the CsCe 2Cl 7 crystal is a promising material for medical imaging and radiation detection.