The present work investigates the source term of ²²²Rn and ²²⁰Rn for calculating their respective concentration in the dwellings. The study is carried out in the Nainital district, located in the Himalayan belt of Uttarakhand. To estimate the source term, ²²²Rn and ²²⁰Rn exhalation rates and natural radionuclides were measured from the collected soil samples from different locations. Natural radionuclides found in soil samples are used to calculate radiation health concerns using various factors. The mass exhalation rate for ²²²Rn varied between 13 and 81 mBq/kg/h, while ²²⁰Rn surface exhalation rate ranged from 0.32 to 3.93 Bq/m²/s.

目前的工作调查了²²² Rn 和²²⁰ Rn的源项，用于计算它们各自在住宅中的浓度。该研究在位于北阿坎德邦喜马拉雅带的奈尼塔尔区进行。为了估计源项，从不同地点收集的土壤样品中测量了²²² Rn 和²²⁰ Rn 呼出率和天然放射性核素。在土壤样品中发现的天然放射性核素用于使用各种因素计算辐射健康问题。²²² Rn的质量呼气速率在 13 到 81 mBq/kg/h 之间变化，而²²⁰ Rn 表面呼气速率范围从 0.32 到 3.93 Bq/m ² /s。