Characterization of Makrofol® DE 1-1 (bisphenol-A polycarbonate) as SSNTD and its application in the alpha particle detection. (March 2021)

• Record Type: Journal Article
• Authors: El Ghazaly, M.; Aydarous, Abdulkadir; Salama, T.T.; El-Naggar, Hala I.
• Is Part Of: Radiation physics and chemistry. Volume 180(2021)
• Publication Date: 2021-03
• Subjects: Makrofol® DE 1-1 -- Alpha particle energy detection -- UV–Visible spectroscopy -- Bulk etch rate -- Activation energy; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2020.109101
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: Makrofol ® DE 1-1 (bisphenol-A polycarbonate) was characterized as a solid state nuclear track detector (SSNTD) as well as for alpha particle detection. The bulk etch rate of the Makrofol ® DE 1-1, at different etchant concentrations and temperatures, was found to be homogenous. The visible light absorbance measurements of the etched Makrofol ® DE 1-1 at different etching conditions indicated that the lowest visible light absorbance occurs at the etching conditions of 75% 6 N KOH+25% C2 H5 OH and a temperature of 50 ∘ C. The bulk etch rate activation energy E B increased from ( 0.59 ± 0.05 ) eV to ( 0.76 ± 0.05 ) eV for Makrofol ® DE 1-1 etched in KOH and 25% 6 N KOH+75% C2 H5 OH, respectively. Before alpha particle tracks overlapping, the alpha track density in Makrofol ® DE 1-1 is linearly correlated with the exposure time to alpha particles. The alpha particles track diameter was found to be a non-monotonic function of the alpha particle energy. The range of alpha particles in Makrofol ® DE 1-1, which is a monotonic function of alpha particle energy, was determined using the over-etched track technique. The range-energy relationship of a perpendicularly incident alpha particle in a Makrofol ® DE 1-1 detector can be used for the determination of the alpha particle energy over a wider energy range than with the etch pit diameter-energy relationship. Highlights: Makrofol® DE 1-1 was investigated as SSNTD. Optimal etching conditions were determined. Bulk etch rate activation energy were determined. Alpha particles detection based on Energy-range relationship is presented.