JPH0441681U - - Google Patents

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Publication number
JPH0441681U
JPH0441681U JP8162090U JP8162090U JPH0441681U JP H0441681 U JPH0441681 U JP H0441681U JP 8162090 U JP8162090 U JP 8162090U JP 8162090 U JP8162090 U JP 8162090U JP H0441681 U JPH0441681 U JP H0441681U
Authority
JP
Japan
Prior art keywords
count value
calculates
air
semiconductor detector
radioactive substances
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8162090U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP8162090U priority Critical patent/JPH0441681U/ja
Publication of JPH0441681U publication Critical patent/JPH0441681U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第１図ａ，ｂは、本考案に係る半導体検出器を
用いたダストモニタの概略構成図、第２図は、第
１図に示すダストモニタの測定部の回路ブロツク
図、第３図は、測定部のＳＣＡで計数されるエネ
ルギ分布を示した説明図である。 １２……電気冷却装置、１４……測定部、１４
ｂ……ＧＲＯＳＳ計数用ＳＣＡ、１４ｃ……ＢＫ
Ｇ計数用ＳＣＡ、１４ｄ……ＮＥＴ計数率計、１
４ｅ……記録計、１６……長尺濾紙部、１８……
半導体検出器、１９……クライオスタツト、２０
……コントロール回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 空気中の放射性物質を濾紙に集塵捕集して空気
    中の放射能濃度を測定するダストモニタにおいて
    、 前記濾紙に集塵された放射性物質からのγ線を
    検出し、そのγ線のエネルギーに応じた検出信号
    を出力する冷却型の半導体検出器と、 前記半導体検出器を連続して冷却する電気冷却
    装置と、 前記半導体検出器から出力される検出信号を入
    力して、全体計数値とバツクグラウンド計数値と
    を求め、両計数値から正味計数値を算出する計数
    値演算装置と、を有し、 前記正味計数値から空気中の放射性物質の濃度
    を求めることを特徴とするダストモニタ。
JP8162090U 1990-07-31 1990-07-31 Pending JPH0441681U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8162090U JPH0441681U (ja) 1990-07-31 1990-07-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8162090U JPH0441681U (ja) 1990-07-31 1990-07-31

Publications (1)

Publication Number Publication Date
JPH0441681U true JPH0441681U (ja) 1992-04-08

Family

ID=31627717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8162090U Pending JPH0441681U (ja) 1990-07-31 1990-07-31

Country Status (1)

Country Link
JP (1) JPH0441681U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007225416A (ja) * 2006-02-23 2007-09-06 Mitsubishi Electric Corp 放射性ガスモニタ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104281A (en) * 1976-02-27 1977-09-01 Hitachi Ltd U isotope ratio meter
JPS5913968A (ja) * 1982-07-15 1984-01-24 Mitsubishi Electric Corp 水中放射能測定装置
JPS636374B2 (ja) * 1983-03-01 1988-02-09 Norihisa Kataoka

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104281A (en) * 1976-02-27 1977-09-01 Hitachi Ltd U isotope ratio meter
JPS5913968A (ja) * 1982-07-15 1984-01-24 Mitsubishi Electric Corp 水中放射能測定装置
JPS636374B2 (ja) * 1983-03-01 1988-02-09 Norihisa Kataoka

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007225416A (ja) * 2006-02-23 2007-09-06 Mitsubishi Electric Corp 放射性ガスモニタ

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