裂变径迹法在矿物和天然玻璃研究中的应用 裂变径迹法适用于含铀量较高的对象,能够在测定的时间内产生足够高的裂变径迹数。对于计数来说,以每平方厘米10个径迹作为下限,每平方厘米10~7个径迹作为上限。因为要求这些径迹在光学显微镜内仍能互相 Fission track method in mineral and natural glass research Fission track method is suitable for objects containing higher amounts of uranium, can produce high enough fission track number in the measured time. For the count, 10 tracks per square centimeter was used as the lower limit and 10 to 7 tracks per square centimeter were used as the upper limit. Because these tracks are required to still be within each other in an optical microscope