The influence of heating of irradiated LiF crystals on the intensity of the registered tracks using Fluorescent Nuclear Track Detection (FNTD) technique

<p>The method of fluorescent nuclear track detection (FNTD) using LiF crystals utilizes the photoluminescence of color centers generated in this material by ionizing radiation. By using a fluorescence microscope it is possible to observe tracks of single nuclear particles interacting with the detector. Thanks to LiF detectors, it was possible to image tracks after irradiation of crystals with alpha particles, neutrons, heavy ions and beta radiation. Unfortunately, this method has a low signal-to-noise ratio. It seems that the most feasible way to improve it, is by thermal treatment of LiF crystals. The data provided is a set of images acquired for a detector irradiated with alpha particles and then heated to temperatures ranging from room temperature to 360°C. Measurements were carried out at room temperature after cooling down the detector. The images show the change in the brightness of the tracks after applying the procedure of post-irradiation anealing. This work was supported by the National Science Centre, Poland (Contract No. UMO-2020/37/N/ST5/01975).</p>荧光核径迹检测（Fluorescent Nuclear Track Detection, FNTD）技术采用氟化锂（LiF）晶体作为探测器，其核心原理是利用电离辐射在该材料中引发的色心的光致发光特性。借助荧光显微镜，可观测到与探测器发生相互作用的单核粒子径迹。依托氟化锂探测器，已成功实现对经α粒子、中子、重离子及β辐射辐照后的晶体径迹成像。但该方法存在信噪比偏低的缺陷。目前，提升该方法性能最可行的途径为对氟化锂晶体进行热处理。本次公开的数据集包含一组探测器成像结果：该探测器先经α粒子辐照，随后被加热至室温至360℃的不同温度区间，所有测量均在探测器冷却至室温后完成。这些图像展示了辐后退火处理后径迹亮度的变化情况。本研究得到波兰国家科学中心资助（项目编号：UMO-2020/37/N/ST5/01975）。