MEASUREMENTS OF RADON ACTIVITY CONCENTRATIONS IN THE ENVIRONS OF AIZAWL CITY, MIZORAM

Abstract

In this paper, we report our findings on the measurement of indoor radon activity and soil radium content in Aizawl city of Mizoram, India. The measurements were carried out using Solid State Nuclear Track Detectors viz. LR-115 Type2 films. The indoor radon activity concentration has been found to vary from 20 to 75.4 Bq.m^-3, with an arithmetic mean value of 42.33 ±15.42 Bq.m^-3 and geometric mean value of 39.59 ±1.45 Bq.m^-3. The radium content value was found to range between 9.1 to 33.1 Bq.kg^-1 with an arithmetic mean of 20.35 ± 5.5 Bq.kg^-1 and a geometric mean of 19.59 ±1.33 Bq.kg^-1.