Study of nuclear track parameters of normal incident alpha particles on CR-39 detector

Malo, Sabreen; Qasim, Yaser; Al-Jubbori, Mushtaq Abed

doi:10.33899/edusj.2021.129461.1139

	Study of nuclear track parameters of normal incident alpha particles on CR-39 detector
Journal of Education and Science
Article 40, Volume 30, Issue 2, 2021, Pages 138-147 PDF (443.16 K)
Document Type: Research Paper
DOI: 10.33899/edusj.2021.129461.1139
Authors
Sabreen Malo¹; Yaser Qasim²; Mushtaq Abed Al-Jubbori^* ³
¹Department of Physics, College of Education for Pure Sciences, University of Mosul, 41001 Mosul, Iraq
²physics,education for pure science,Mosul,Iraq
³Department of Physics, College of Education for Pure Science, Mosul University, Mosul-Iraq
Abstract
In this paper, Solid State Nuclear Detector (SSNTD) CR-39 was broken into many fragments with areas of (1x1) cm2. The samples were irradiated using 241Am source. The measurements were taken at normal incident angle of the alpha particles for energies (3.17, 3.59 and 4.13) MeV respectively. The samples were etched using sodium hydroxide solution (NaOH 6N, 70±1 oC) for time interval of 0.25 h. The optical microscope provided with digital camera was used to preview the track profile formed in CR-39. This allowed measurement of the track length and in turn the track length as a function of the etching time . The track growth rate, track etch rate and track rate ratio were also investigated as a function of many parameters such as etching time, track depth and residual range. The study showed a good consistency among the investigated parameters . The curves of the track etch rate and track etch ratio manifested a consistency with Brack curve who interested in studying the linear energy loss in materials where the maximum energy loss occurs at the end of the alpha particle range.
Keywords
Alpha particle,,; ,،,؛CR-39,,; ,،,؛Track etch rate,,; ,،,؛Etch rate ratio,,; ,،,؛Track depth

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