Crystal growth and scintillation properties of Nd:CaF2 |
| |
Authors: | Hidehiko Tanaka Noriaki Kawaguchi Naoto AbeYuki Furuya Yuui YokotaTakayuki Yanagida Jan PejchalMartin Nikl Yoshiyuki KawazoeAkira Yoshikawa |
| |
Affiliation: | a Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aobaku, Sendai, Miyagi 980-8577, Japan b Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aobaku, Sendai, Miyagi 980-8577, Japan c Sendai Research and Development Center of Tokuyama Co. Ltd., ICR-building, Minamiyoshinari, Aoba-ku, Sendai, Japan d Institute of Physics, The Academy of Sciences of the Czech Republic, Czech Republic e New Industry Creation Hatchery Center (NICHe) 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan |
| |
Abstract: | Nd3+ doped CaF2 single crystal scintillator has been investigated. We tried to grow 1%, 5%, 10%, 20%, 30% and 40% Nd3+ doped CaF2 single crystals by the simple melt-solidifying method. Powder X-ray diffraction (XRD) patterns were measured to identify the phase of all the samples. The XRD patterns of all the samples were similar to CaF2. Those samples are compared in terms of their X-ray-excited radioluminescence spectra, transmittance, α-ray-excited decay time and light yield. When the X-ray is used for excitation, luminescence is observed in the VUV region. Transmittance of the crystals is more than 70% at wavelengths longer than about 180 nm. In the decay kinetics, the fast components of the samples are distributed in less than 25 ns time range and the slow components of sample are distributed in more than 90 ns. These decay times became shorter with increasing Nd3+ concentration. They are related to the Nd3+ 5d-4f VUV emission. The light yields of samples are distributed in 5-2500 photon/5.5 MeV α-ray and decrease with increasing Nd3+ concentration. |
| |
Keywords: | Fluoride Single crystal Crystal growth from the melt Nd3+ 5d-4f Radiation Scintillator |
本文献已被 ScienceDirect 等数据库收录! |
|