Effect of thermal annealing on the maximal apparent etched track lengths of alpha particles in a CR-39 nuclear track detector | ||||
| Bulletin of Faculty of Science, Zagazig University | ||||
| Article 10, Volume 2024, Issue 2, July 2024, Page 99-106 PDF (1.06 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/bfszu.2024.238206.1316 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
A A Attia  1; A. F. Saad2; M. Al-Abyad3
| ||||
| 1Physics department, Faculty of science | ||||
| 2physics, Faculty of science, Zagazig university | ||||
| 3Nuclear Physics Department (Cyclotron Facility), Nuclear Research Centre, Atomic Energy Authority | ||||
| Abstract | ||||
| In this paper, Poly allyl Diglycol Carbonate (PADC) Polymer-Based Nuclear Track Detector Measurement of Maximum Apparent Track Length of Alpha Particles in NTDs, its brand name is CR-39, has been performed. We determined the etching length of alpha particles from minimum to maximum in an unheat-treated (pristine) and heat-treated CR-39 detector before and after the over-etch zones. The etched alpha track diameter of unheat-treated and heat-treated CR-39 detectors was calculated as a function of etching time at different annealing times and temperatures, using a 241Am as a radioactive source. the energy delivered by the source is 5 MeV which reduced by 0.486 MeV because of 3mm collimator from 5.486 MeV. The resulting minimum and maximum etching lengths for alpha particles in the heat-treated CR-39 detector were smaller than the expected etching lengths, especially at higher annealing temperatures and times. These results are also revealed that the thermally treated CR-39 detectors are insensitive to visualize the real track range of alpha particles at the higher the annealing times and temperatures. The measurements of maximum etched alpha-particle track length are clearly confirmed that the changes brought to the material by heat treatment are chemical in nature not physical, and that these changes significantly alter the measured parameters. | ||||
| Keywords | ||||
| Key Words: CR-39 nuclear track detector; Thermal treatment; Over-etched track diameter method; Alpha particle range means maximum etchable track length; Minimum and maximum etchable track lengths | ||||
|
Statistics Article View: 133 PDF Download: 190 |
||||
