Crystal Growth and Scintillation Properties of ${\hbox {Rb}}_{2} {\hbox {CeBr}} _{5}$
Crystal Growth and Scintillation Properties of ${\hbox {Rb}}_{2} {\hbox {CeBr}} _{5}$
复制标题
DOI：
10.1109/tns.2009.2018838
复制
发表时间：
2009-06
影响因子：
1.8
通讯作者：
Sunghwan Kim;Joonil Lee;S. Doh;H. Kim;Hwanbae Park;Heedong Kang;Dosung Kim;Hong U
中科院分区：
文献类型：
--
作者：
Sunghwan Kim;Joonil Lee;S. Doh;H. Kim;Hwanbae Park;Heedong Kang;Dosung Kim;Hong U
本文介绍了 Rb2CeBr5 晶体的晶体生长和闪烁特性。使用两区透明炉通过布里奇曼法生长晶体。在室温下X射线和γ射线激发下对晶体的闪烁特性进行了研究。 Rb2CeBr5 的发射光谱在 360 ~ 440 nm 范围内观察到，峰值在 390.5 nm，这是由于 Ce3+ 的 5d rarr 4f 跃迁所致。 Ce3+发射的衰减时间由两个部分组成。快分量为 56.1 ns (98.8%)，慢分量为 329.9 ns (1.2%)。对于 137Cs 662 keV 伽马射线，晶体的能量分辨率为 6.9%。 Rb2CeBr5晶体的绝对光产额约为34,000 phs/MeV，并且还测量了晶体的非比例性。
In this paper, crystal growth and scintillation properties of Rb2CeBr5 crystal are presented. The crystal was grown with the Bridgman method using a two zone transparent furnace. The investigation of scintillation properties of the crystal were performed under the excitation by X-ray and gamma;-ray at room temperature. The emission spectrum of the Rb2CeBr5 was observed in the range of 360 ~ 440 nm, peaking at 390.5 nm, which is due to the 5d rarr 4f transitions of the Ce3+. The decay time of the Ce3+ emission was composed two components. The fast component was 56.1 ns (98.8%), and the slow component was 329.9 ns (1.2%). The energy resolution of the crystal was obtained to be 6.9% for the 137Cs 662 keV gamma-ray. The absolute light yield of the Rb2CeBr5 crystal is about 34,000 phs/MeV, and the non-proportionality of the crystal was also measured.