Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1983-11-01 |
タイトル |
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言語 |
en |
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タイトル |
Aitken nuclei sonde with constant expansion ratio irrespective of ambient pressure |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Ito, Tomoyuki
Ikegami, Miwako
Kanazawa, Izuo
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著者所属(英) |
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en |
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Meteorological Research Institute |
著者所属(英) |
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en |
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Meteorological Research Institute |
著者所属(英) |
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en |
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Meteorological Research Institute |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
A new type of Aitken nuclei sonde is reported. The sonde consists of an expansion fog chamber, which is similar in principle to the Pollak counter or the Aitken counter, as a measuring device of Aitken unclei concentration. The most important characteristics of the present fog chamber are that it is a very compact automatic one and it has a construction to keep expansion ratio constant irrespective of ambient pressure. The constant expansion ratio is an essential requirement for the measurement of Aitken nuclei concentration at different heights by a balloon or an airplane. The variation of measured values during 50 times measurement for a same air sample is smaller than 3% of the mean. Two identical fog chambers in the present sonde give Aitken unclei concentrations which agree within 50(cm)^<-3> for the concentration range covering between about 200 and about 2000cm^<-3>. A nuclei measuring signal is inserted into rawinsonde signal, which is transmitted to a ground station, every minute for 10s. The total weight of a sonde is 9kg, comprising a 5kg fog chamber, a 3.5kg battery and a 0.5kg rawinsonde. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 29,
p. 185-190,
発行日 1983-11
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