Blair M W, Yukihara E G, McKeever S W S
Oklahoma State University, Physics Department, 145 PS II, Stillwater, OK 74078, USA.
Radiat Prot Dosimetry. 2006;119(1-4):454-7. doi: 10.1093/rpd/nci619. Epub 2006 May 30.
We have developed a system to irradiate samples and record radioluminescence (RL), optically stimulated luminescence (OSL), and thermoluminescence (TL) at temperatures ranging from -150 degrees C to 200 degrees C. The system consists of a cryostat, an irradiation/stimulation unit fitted with an X-ray tube (40 kV Moxtek) and a quartz window for optical stimulation, and a detection unit that utilises a photomultiplier tube and an interchangeable filter pack. Experiments have been conducted with quartz and albite (a feldspar). TL and OSL experiments show that several optically sensitive trapping states are stable below -50 degrees C. In addition, an increase in OSL is seen as the OSL stimulation temperature is lowered below -50 degrees C, and an increase in RL is apparent as the temperature is lowered during irradiation. This indicates that not only are optically sensitive low temperature traps present but that luminescence becomes more efficient at low temperatures.
我们开发了一个系统，用于在-150摄氏度至200摄氏度的温度范围内对样品进行辐照，并记录其辐射发光（RL）、光激励发光（OSL）和热释光（TL）。该系统由一个低温恒温器、一个配备X射线管（40 kV，Moxtek）和用于光激励的石英窗的辐照/激励单元，以及一个使用光电倍增管和可互换滤光片组的检测单元组成。我们已使用石英和钠长石（一种长石）进行了实验。热释光和光激励发光实验表明，在低于-50摄氏度时，几种光敏感俘获态是稳定的。此外，当光激励发光的激励温度降至-50摄氏度以下时，光激励发光会增加，并且在辐照期间温度降低时，辐射发光会明显增加。这表明不仅存在光敏感低温陷阱，而且在低温下发光变得更有效。
