Results 111 to 120 of about 173 (125)

Measurement of Thoron Exhalation Rates from Building Materials

Health Physics, 2014
Thoron (220Rn) exhalation from building materials has become increasingly recognized as a potential source for radiation exposure in dwellings. However, contrary to radon (220Rn), limited information on thoron exposure is available. The purpose of this study is to develop a test method for the determination of the thoron exhalation rate from building ...
G, de With, P, de Jong, A, Röttger
openaire   +2 more sources

Radon and Thoron exhalation rate map in Japan

AIP Conference Proceedings, 2008
Measurements of radon and thoron exhalation rates have been done using the radon and thoron exhalation rate measuring instrument adopting the accumulation method. We obtained the 111 data in the 40 sites of the 14 prefectures in Japan. The arithmetic average value of the radon and thoron exhalation rates by all 111 data were obtained to be 8.6 mBq⋅m−2 ...
Hosoda Masahiro, Shimo Michikuni, Sugino Masato, Furukawa Masahide, Fukushi Masahiro, Minami Kazuyuki, Ejiri Kazutaka, Anselmo Salles Paschoa, Friedrich Steinhäusler   +8 more
openaire   +1 more source

Characteristics of radon and thoron exhalation rates in Okinawa, subtropical region of Japan

Radiation Protection Dosimetry, 2012
Radon and thoron exhalation rates from the ground surface were estimated in three islands of Okinawa Prefecture, a subtropical region of Japan. In situ measurements of the exhalation rates were conducted at a total of 88 points using an accumulation technique with a ZnS(Ag) scintillation detector.
Y, Shiroma, S, Kina, T, Fujitani, M, Hosoda, A, Sorimachi, T, Ishikawa, S K, Sahoo, S, Tokonami, M, Furukawa   +8 more
openaire   +2 more sources

Measurement of radon/thoron exhalation rates and gamma-ray dose rate in granite areas in Japan

Radiation Protection Dosimetry, 2012
Radon and thoron exhalation rates and gamma-ray dose rate in different places in Hiroshima Prefecture were measured. Exhalation rates were measured using an accumulation chamber method. The radon exhalation rate was found to vary from 3 to 37 mBq m(-2) s(-1), while the thoron exhalation rate ranged from 40 to 3330 mBq m(-2) s(-1).
G, Prasad, T, Ishikawa, M, Hosoda, S K, Sahoo, N, Kavasi, A, Sorimachi, S, Tokonami, S, Uchida   +7 more
openaire   +2 more sources

Influence of thoron on measurement results of radon exhalation rate

2012
Because of thoron exhalation, the measurement results of radon exhalation rate using a local still method is usually larger than the true value of radon flux rate of the monitored material surface. The influence of 216Po (ThA) on radon exhalation rate can be eliminated for sensitive radon monitors.
Ling, Q, Leung, Xiao, DT, Zhao, GZ
openaire   +1 more source

Simultaneous measurement of radon and thoron exhalation rate from soil and building materials

2005
Publisher Summary This chapter presents two methods for simultaneous measurement of radon and thoron exhalation from soil and building materials: (1) charcoal adsorption, (2) Lucas cell methods. Both methods are applicable especially in the case of a soil flux enhanced in thoron gas.
C. Cosma, O. Cozar, T. Jurcut, C. Baciu, I. Pop   +4 more
openaire   +1 more source

Effect of Soil Moisture Content on Radon and Thoron Exhalation

Journal of Nuclear Science and Technology, 2007
Masahiro Hosoda, Michikuni Shimo, Masato Sugino   +2 more
exaly   +2 more sources

Ventilation effect on indoor radon–thoron levels in dwellings and correlation with soil exhalation rates

Indoor and Built Environment, 2016
, R P Chauhan, Bijaya Sahoo
exaly  

Thoron interference in radon exhalation rate measured by solid state nuclear track detector based can technique

Journal of Radioanalytical and Nuclear Chemistry, 2014
B K Sapra, Bijaya Sahoo, Sapra B K
exaly  

Study of Radon and Thoron exhalation from soil samples of different grain sizes

Applied Radiation and Isotopes, 2018
M T JOSÉ, K Sivasubramanian, N Chitra   +2 more
exaly