Etching time (min) | Track density (No/mm2) | ||
Time of exposure to alpha source | |||
(10 sec) | (20 sec) | (30 sec) | |
10 | 654 | 1124 | 1453 |
20 | 670 | 1247 | 1466 |
30 | 830 | 1206 | 1683 |
40 | 708 | 1057 | 1630 |
Average | 715.5 | 1158.5 | 1558 |
Max | 830 | 1247 | 1683 |