一、引言许多绝缘固体如塑料、玻璃和天然矿物常常可以记录带电粒子的径迹(这些未经化学蚀刻的径迹可称为潜迹),这是带电粒子在绝缘固体内沿着自己运动的轨迹所造成的辐射损伤区。在天然矿物中所记录的裂变径迹是这类固体核径迹中的一种,它是直径大约50(?),长约20微米的柱形辐射损伤区,最初只能用高倍的电子显微镜才能观察到。在1962年由P.B.普赖斯(Price)等人采用化学蚀刻方法使这些潜迹扩大到光波波长数 I. INTRODUCTION Many insulating solids, such as plastics, glass and natural minerals, can often record the tracks of charged particles (these traces of chemically etched tracks can be referred to as “tracks”) as charged particles move along themselves in an insulating solid Radiation injury caused by the track area. The fission track recorded in natural minerals is one of these solid nuclear tracks. It is a cylindrical radiation damage zone about 50 直 in diameter and about 20 长 in length. Originally it was only observed with a high magnification electron microscope Can be observed. Chemical etching was used by Price et al. In 1962 to extend these potentials to light wave numbers