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Author Tokonami, Shinji
Source IACS Kolkata
Content type Text
Publisher Indian J. Phys.
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics
Subject Keyword Radon ♦ Thoron ♦ Measurement ♦ Exposure ♦ Lung cancer ♦ Epidemiology
Abstract Since radon is internationally noted as the second cause of lung cancer,many countries are trying about to solve the problem worldwide. In addition, a newevidence of lung cancer risk has been recently found out with a low level below 200Bq m–3. Thus the action level will have to be set lower than before. Importance ofradon exposure has been further recognized and accurate radon concentrations will berequired. Recently thoron has also been recognized from the viewpoint of accurateradon measurements. The present paper describes specification of the NIRS radon andthoron chambers, passive measurement technique of radon and thoron and thoroninterference on radon measurements from both experimental studies and fieldexperiences on epidemiological study area.
Education Level UG and PG
Learning Resource Type Article
Journal Indian J Phys
Volume Number 83
Issue Number 6
Page Count 9
Starting Page 777
Ending Page 785