The present paper outlines characteristics of thoron and its progeny in the indoor
environment. Since the half-life of thoron (220Rn) is very short (55.6 s), its behavior is quite …

New scientific findings based on the latest epidemiological analyses for lung cancer risk due
to radon have been demonstrated. The residential radon concentration is mainly measured …

MATERIALS AND METHODS Our previous radon-thoron discriminative detector has several
functional problems. 9 An influence of electrostatics had to be considered because the …

The radiation doses from natural radiation sources in Japan are reviewed using the latest
knowledge. The United Nations Scientific Committee on the Effects of Atomic Radiation …

Abstract Tokonami, S., Sun, Q., Akiba, S., Zhuo, W., Furukawa, M., Ishikawa, T., Hou, C.,
Zhang, S., Narazaki, Y., Ohji, B., Yonehara, H. and Yamada, Y. Radon and Thoron …

Public exposure to radon (222Rn) and its progeny has been a worldwide concern in the past
decades. Many types of passive integrating 222Rn monitors with solid state nuclear track …

Indoor radon measurements were carried out in cave dwellings of the Chinese loess plateau
in Gansu province, where previously the Laboratory of Industrial Hygiene (LIH), China, and …

Radon (222Rn) and thoron (220Rn), sources of natural background radiation, have been
the subjects of long-standing studies, including research into radon and thoron as major …

This study examined correlations between radon, thoron and thoron progeny concentrations
based on surveys conducted in several different countries. For this purpose, passive …

Hungarian detectors modified and developed at the National Institute of Radiological
Sciences (NIRS), Japan were placed at different sites, including homes and underground …