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  1. B200 工学部/工学研究科
  2. B200b 紀要
  3. Memoirs of the Faculty of Engineering, Nagoya University
  4. 21(2)

Some properties of ionizing radiations and radioactive ions in the natural environment

https://doi.org/10.18999/memfenu.21.2.250
https://doi.org/10.18999/memfenu.21.2.250
e93cf6df-eba9-473c-b5be-6f85f5ab3429
名前 / ファイル ライセンス アクション
21-2-02.pdf 21-2-02.pdf (2.6 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2021-02-02
タイトル
タイトル Some properties of ionizing radiations and radioactive ions in the natural environment
言語 en
著者 Kawano, Minoru

× Kawano, Minoru

WEKO 103060

en Kawano, Minoru

Search repository
Ikebe, Yukimasa

× Ikebe, Yukimasa

WEKO 103061

en Ikebe, Yukimasa

Search repository
Nakashima, Yoshiyuki

× Nakashima, Yoshiyuki

WEKO 103062

en Nakashima, Yoshiyuki

Search repository
Nakayama, Takeyoshi

× Nakayama, Takeyoshi

WEKO 103063

en Nakayama, Takeyoshi

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Shimo, Michikuni

× Shimo, Michikuni

WEKO 103064

en Shimo, Michikuni

Search repository
Minato, Susumu

× Minato, Susumu

WEKO 103065

en Minato, Susumu

Search repository
Iida, Takao

× Iida, Takao

WEKO 103066

en Iida, Takao

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
抄録
内容記述 This paper consists of two parts. Chapter 1 is concerned with the results of measurements of ionization intensities due to the beta- and gamma-radiations near the ground carried out from 1963 through 1969. The influences of fallout radioactivity deposited on the ground surface were studied from the view point of atmospheric ionization. The beta-radiation from the fallout radioactive nuclides deposited on the ground surface decreased remarkably during the last 6 years, and recently, a newly designed ionization chamber made of platic plates was used for meauring the beta-radiation. The ionization intensity due to the gamma-radiation didn't change so remarkable as that due to the beta-radiation during the same period. Recently, spectroscopic method with N2I scintllation counter was adopted for obtaining some detailed informations on the terrestrial gamma-radiation. In the beginning of January 1967, sudden increases of the ionization intensities due to the beta- and gamma- radiations from the fallout radioactivity caused by a nuclear explosion test were measured. Chapter 2 is concerned with the physical properties of RaA ion. To clarify the interaction between RaA ions and condensation nuclei, simultaneous measurements of the concentrations of RaA ions (nA), radon-222, condensation nuclei (Z) and the diffusion coefficient of condensation nuclei (D) were carried out. It was found that the correlation among them may be well expressed by the simple formula : qA = βAnAZ. The correlation between βA and D (or rdius of nuclei) was also obtained. The effective attachment coefficient of RaA ions was compared with that of small ordinary ions, and it was presumed that about 25 per cents of RaA atoms formed on the decay of radon-222 seem to have some charge, and remaining 75 per cents have no charge.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Faculty of Engineering, Nagoya University
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/memfenu.21.2.250
ID登録タイプ JaLC
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0027-7657
書誌情報 en : Memoirs of the Faculty of Engineering, Nagoya University

巻 21, 号 2, p. 250-272, 発行日 1970-03-31
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