Seasonal variation of indoor radon, thoron and their progeny in Belagavi district of Karnataka, India.

Systematic investigations on the seasonal variation of indoor radon, thoron and their progeny levels have been carried out in Belagavi district of Karnataka, India. The radon and thoron levels were measured using LR-115 type II dosimeter in cups with single-entry pinhole. The measurements were carried out in all the four season, viz, monsoon, autumn, winter and summer, in selected houses of the region.

Distribution of natural radionuclides and radon concentration in the riverine environs of Cauvery, South India.

Systematic studies were carried out to understand the distribution of natural radionuclides in sediments and radon in water in the riverine environs of Cauvery, one of the major rivers of South India. The activity of radionuclides in the sediment was measured by gamma ray spectrometry. The radon emanation from the sediment was measured by the sealed 'can technique' and the radon in the water was measured using the RAD-7 instrument.

NATURAL RADIOACTIVITY IN SEDIMENTS AND RIVER BANK SOIL OF KALLADA RIVER OF KERALA, SOUTH INDIA AND ASSOCIATED RADIOLOGICAL RISK.

The paper presents the activity concentrations of Th, Ra and K in the sediments and river bank soil samples collected from the Kallada river environs of coastal Kerala. The radiological risks associated with these radionuclides were calculated. The samples were processed following standard procedure, and activity was counted using a high-efficiency 5″ × 5″ NaI (Tl) detector coupled to GSPEC gamma spectroscopy system.

NATURAL RADIONUCLIDE LEVELS IN SEDIMENTS OF CAUVERY RIVERINE ENVIRONMENT.

The paper presents the systematic measurement of activity concentrations of K, Ra and Th in sediment sample of Cauvery river of Karnataka, South India. Activity was measured using HpGe gamma ray spectrometer, and the mean values of K, Ra and Th in the sediment samples were found to be 144.31, 32.