To design a new radon gas dosemeter, Monte Carlo simulation has been used to determine the response of the device, fitted with a CR-39 SSNTD, to the different geometric conditions associated with the progress of the holder. The a counting efficiency of a SSNTD depends primarily on the energy and incidence angle into the detector, then on the etching conditions and finally on the track counting procedure. Therefore the elicited efficiency function represents all these factors. The detectors were exposed to a particles at different angle incidences and energies, by using a 244Cm source; two alternative NaOH solution etching conditions were tested, respectively 6 h and 12 h, at 70 °C and 6,5 N. The counting was performed with a light microscope, 267 X, and with an automatic track analysis procedure.
Experimental Determination of CR-39 Counting Efficiency to Alpha Particles to Design the Holder of a New Radon Gas Dosemeter by Means of Monte Carlo Analysis
Penzo, S.;
2003-01-01
Abstract
To design a new radon gas dosemeter, Monte Carlo simulation has been used to determine the response of the device, fitted with a CR-39 SSNTD, to the different geometric conditions associated with the progress of the holder. The a counting efficiency of a SSNTD depends primarily on the energy and incidence angle into the detector, then on the etching conditions and finally on the track counting procedure. Therefore the elicited efficiency function represents all these factors. The detectors were exposed to a particles at different angle incidences and energies, by using a 244Cm source; two alternative NaOH solution etching conditions were tested, respectively 6 h and 12 h, at 70 °C and 6,5 N. The counting was performed with a light microscope, 267 X, and with an automatic track analysis procedure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
