Increase in the area of etched alpha-particle tracks in CR-39 plastic with increasing storage time under nitrogen

摘要

The area of etched tracks in CR-39 (polyallyl diglycol carbonate, PADC) exposed to alpha-particles from an americium-241 source has been investigated as a function of post-exposure storage time in a dry nitrogen atmosphere. Data were collected over 2.5 years and the results show that the nominal maximum area of the track area distribution increases with increasing storage time. (C) 1999 NRPB. Published by Elsevier Science Ltd. All rights reserved. [References: 12]