Radioactivity Dataset for Ra-226, Th-232, and K-40 in Seaside Sand Samples from Cox’s Bazar Coast, Bangladesh

This dataset contains activity concentrations of three naturally occurring radionuclides—Ra-226, Th-232, and K-40—in sand samples. Measurements are reported in becquerels per kilogram (Bq/kg) and were obtained using gamma spectrometry with a high-purity germanium (HPGe) detector. The sample were collected from Cox’s Bazar Coast, Bangladesh.