The effect of material purity on the optical and scintillation properties of solution-grown trans-stilbene crystals
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- 作者：Leslie Carman ; carman1@llnl.gov ; Natalia Zaitseva ; H. Paul Martinez ; Benjamin Rupert ; Iwona Pawelczak ; Andrew Glenn ; Heather Mulcahy ; Roald Leif ; Keith Lewis ; Stephen Payne
- 关键词：A2. Solution growth ; B1. Organic crystals ; B1. trans-Stilbene ; B2. Organic scintillator ; B3. Neutron detection ; B3. Pulse shape discrimination
- 刊名：Journal of Crystal Growth
- 出版年：2013
- 出版时间：1 April, 2013
- 年：2013
- 卷：368
- 期：Complete
- 页码：56-61
- 全文大小：923 K
文摘
Large, 10 cm-size, single crystals of trans-stilbene were grown for the first time from solution by a temperature reduction technique. Their scintillation performance for fast neutron detection depended on the purity of the initial starting material. A light-yield-inhibitor-free starting material was specially synthesized and crystals from this material were compared to those grown from commercially available powders of trans-stilbene. The use of pure material made possible the growth of the large size crystals (>400 g) with excellent neutron-gamma discrimination performance, which are needed for use as a radiation detection material.