To accurately measure and evaluate the radiation dose of 220Rn and its progeny, a 220Rn
chamber with an airflow model has been developed and studied, but it is difficult to take into …

The unattached fraction of 220 Rn progeny is one of the key parameters in lung dose
evaluation models. To study the behavior of unattached 220 Rn progeny and to prepare for …

The impact of the radiation dose produced by 222 Rn/220 Rn and its progeny on human
health has garnered increasing interest in the nuclear research field. The establishment of …

[en] For the purpose of evaluating the exposure due to inhalation of 220 Rn and its progeny,
a new method of integrating monitor of 222 Rn/220 Rn progeny was developed and …

A new thoron (220Rn) experimental room (TER) was established at National Institute of
Radiological Sciences in 2011 to respond to the appearance of new passive devices for …

Objective: To explore the reduction effect for the indoor 222Rn (Rn) by Fresh Air Ventilation
(FAV) system, a novel commercial ventilation device in China. Methods: The indoor …

Deposition of the 222Rn (radon) and 220Rn (thoron) progeny on surfaces is one of the
important processes that reduces the progeny activity concentration and hence inhalation …

A new method of directly measuring 222Rn progeny in a worker′ s lung using a lung
counting system is introduced. To determine the efficiency of the lung counting system, a …

A new method of continuous measurement of the concentration of {sup 220} Rn progeny
without replacing membrane frequently was established based on a spectroscopy. A …

Abstract 222 Rn, 220 Rn and their short-lived progenies are well known radioactive indoor
pollutants, identified as the leading environmental cause of lung cancer next to smoking …