Jc. Hadler et al., AN AUTOMATED-SYSTEM FOR TRACK MEASUREMENT FOR THE EMPLOYMENT OF CR-39AS ALPHA-SPECTROMETER IN RADON AND ITS DAUGHTERS MONITORING, Journal of radioanalytical and nuclear chemistry, 182(1), 1994, pp. 133-138
In this work we studied an automated analysis of alpha particle tracks
in CR-39, by employing a MITAKA photo-microdensitometer with a C1522
HAMAMATSU Image Analysis System. This system can be used to measure tr
ack diameters (with a nominal precision of 0.8 mum), superficial track
density, and track darkness. This information can be used to determin
e the alpha particle energies and also their incidence angles (azimuth
al and zenithal). The performance of such an automated system, to anal
yze CR-39 samples which were exposed to alpha particles of known energ
ies, was studied, comparing its response with measurements performed m
anually by experienced microscopists. The experimental results indicat
e that the MITAKA/HAMAMATSU system is very reliable for alpha track an
alysis in CR-39, making possible its use to perform time-consuming mea
surements in microscopy, as in the case of radon and its daughters sur
veys.