Effect of Heat Treatment on Alpha Track Profile of CR-39 Detector.

Abstract

In this paper investigation, a 600 m thick CR-39 nuclear track detector was implemented. It was divided into four pieces, each with a 1 x 1 cm 2 surface area. At a vertical angle, the pieces were irradiated with 2.6 MeV of energy from an 241 Am source. Then, three of the pieces were annealed at successively higher temperatures (100–120–140 o C) using a Memmert U4079142 water bath. The samples were etched using a sodium hydroxide solution, NaOH, with a concentration of 6.25 at a temperature of (70 ± 1 o C) in a water bath for 6 hours at 0.5-hour intervals. Then, track images of the alpha particle diameters were taken using a digital camera (MADC-5A) connected to an optical microscope (XSZ-H Series Biological Microscope) and a computer. It was discovered that an increase in annealing temperature increased the alpha track diameters. The experimental alpha lengths were measured using a new method that involved knowing the general etching rate and entering variables into the Track Test program. The length of the alpha track was calculated through the program, and compared to the results of the first equation of the Track Test program