Radiation chemical yield for loss of carbonate ester bonds in PADC films exposed to gamma ray

• Published in: Radiation measurements Vol. 44; no. 2; pp. 211 - 213
• Main Authors: Mori, Yutaka, Ikeda, Toshiji, Yamauchi, Tomoya, Sakamoto, Atsushi, Chikada, Hiraku, Honda, Yoshihide, Oda, Keiji
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-02-2009; Elsevier
• Subjects: CR-39; Earth sciences; Earth, ocean, space; Exact sciences and technology; G value; Gamma ray; Geochronology; Isotope geochemistry. Geochronology; PADC; 61.80.Ed; CR-39; Gamma ray; G value; 61.62.Pv; PADC; detection; gamma rays; Fourier transformation; oxides; density; esters; radiation damage; exhibits; carbonates; irradiation; hydroxides; Co-60; ions; infrared spectroscopy
• ISSN: 1350-4487; 1879-0925
• DOI: 10.1016/j.radmeas.2009.01.008

Radiation chemical yield,
G value, for loss of carbonate ester bonds in PADC films, exposed to gamma ray from intense Co-60 source, has been determined by means of FT-IR spectrometry. The obtained value of 20 (scissions/100
eV) is fairly higher than that from heavy ion irradiations. It was found the density of hydroxide group in the film significantly increased by the exposure in air but hardly changed in vacuum.