Indigenous Development of a Track Etch Detector
Indigenous Development of a Track Etch Detector
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轨道蚀刻探测器的自主开发
DOI：
10.14429/dsj.42.4387
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发表时间：
1992
影响因子：
0.9
通讯作者：
A. Reddy
中科院分区：
文献类型：
--
作者：
Ashok Kumar;S. Kumar;D. Gopalani;A. Reddy
固体核径迹探测器（SSNTD）已被国际原子能机构（IAEA）认可为估算环境中氡、钍射气及其子体的标准方法。环境监测中常用的探测器一般由硝酸纤维素（LR-115）和聚碳酸酯（CR-39）制成。鉴于印度没有这些探测器，因此认为有必要在本国开发。因此，已经尝试开发硝酸纤维素膜用于SSNTD。具有特定氮含量的硝酸纤维素用于通过流延方法制备这些膜。对薄膜进行了退火、性能评价，并与进口薄膜进行了比较。经150 nCi/sup 241/Am源在2.5cm距离照射后，其本底径迹密度和α径迹密度与进口胶片相当。
Solid state nuclear track detectors (SSNTDs) have been recognised by IAEA as a standard method for estimation of radon, thoron and their daughter products in the environment. The detectors that are commonly used in environmental monitoring are generally made from cellulose nitrate (LR-115) and polycarbonates (CR-39). In view of the non-availability of these detectors in India, need was felt to develop them indigenously. Accordingly, an attempt has been made to develop cellulose nitrate films for their use in SSNTD. Cellulose nitrate with a particular nitrogen content was used for preparing these films by a cast method. This films were annealed, evaluated and then compared with imported films. The background track density and alpha track density after exposure to 150 nCi of /sup 241/Am source at 2.5 cm distance were found to be comparable with those of imported films.