JP6002579B2 - 貨物専用コンテナの内容物を検査する装置及び貨物専用コンテナ内の物質を識別する方法 - Google Patents
貨物専用コンテナの内容物を検査する装置及び貨物専用コンテナ内の物質を識別する方法 Download PDFInfo
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Description
本願は、2009年12月15日出願の米国仮特許出願第61/286,690号の利益を主張する。当該米国仮特許出願はそのすべてが本明細書において参照として組み込まれる。
Claims (27)
- 貨物専用のコンテナの内容物を検査する装置であって、
ジュウテリウム又はトリチウムのイオンを与えるべく構成されたイオン源と、ジュウテリウム又はトリチウムの少なくとも一つを含む標的ガスを保持する標的チャンバに向けて前記イオンを加速するべく構成された加速器とを含む中性子源と、
放射線検出器と
を含み、
前記標的ガスは133.3から1333Paの範囲の圧力に維持され、
前記中性子源は、前記コンテナ内に中性子束を送達するべく構成され、
前記放射線検出器は、前記コンテナ内への前記中性子束の送達に引き続き前記コンテナから出る放射線を検出するべく構成され、
前記放射線検出器は、特殊核物質を識別することを目的として遅発中性子を検出するべく構成され、
前記遅発中性子の検出は、前記中性子束の送達中であって前記中性子束の送達開始から少なくとも1秒後の遅発中性子集団の成長に基づいて行われる装置。 - 前記放射線検出器は、前記コンテナの内部をイメージングする中性子感度のあるフィルムである、請求項1に記載の装置。
- 前記放射線検出器はカドミウム被覆中性子検出器である、請求項1に記載の装置。
- 前記放射線検出器は熱中性子から遮蔽される、請求項1に記載の装置。
- 光子を検出するべく構成された追加放射線検出器をさらに含む、請求項1に記載の装置。
- 前記追加放射線検出器はシンチレーション又は半導体ガンマ線検出器である、請求項5に記載の装置。
- 前記中性子源は定常状態の中性子束を与えるべく構成される、請求項1に記載の装置。
- 前記中性子源は、前記中性子束が設定時間の間与えられるパルスとなるべく構成される、請求項1に記載の装置。
- 前記設定時間は約10マイクロ秒である、請求項8に記載の装置。
- 前記設定時間は5から60秒である、請求項8に記載の装置。
- 前記放射線検出器は、画面上の表示又は画像への再構築を目的としてイメージングコンピュータにデータを送るべく構成された複数の中性子検出器を含む電子検出器である、請求項1に記載の装置。
- 前記中性子源及び放射線検出器は、貨物専用コンテナを検査するべく構成されたコンベアに接続される、請求項1に記載の装置。
- 貨物専用のコンテナ内の物質を識別する方法であって、
中性子源装置により中性子束を生成するステップと、
前記中性子束を前記コンテナに照射するステップであって、前記中性子束が前記物質と接触した後に前記物質により放射線シグネチャが発生するステップと、
前記放射線シグネチャを検出するステップと、
前記物質を識別するべく前記放射線シグネチャを評価するステップと
を含み、
前記中性子源装置は、
イオンビームの発生を目的としかつイオンビーム加速器に動作可能に接続されるイオン源であって、前記イオンビーム加速器が前記イオンビームを受け取り、かつ、前記イオンビームを加速して加速イオンビームをもたらすイオン源と、
前記加速イオンビームと反応して前記中性子束を放出する標的ガスを含むべく前記イオンビーム加速器に動作可能に接続された標的システムと
を含み、
前記標的ガスは、トリチウム又はジュウテリウムの少なくとも一つを含み、かつ、133.3から1333Paの範囲の圧力に維持され、
前記検出するステップは、遅発中性子を検出する検出器を使用することを含み、
前記遅発中性子の検出は、前記中性子束の送達中であって前記中性子束の送達開始から少なくとも1秒後の遅発中性子集団の成長に基づいて行われ、
前記評価するステップは、特殊核物質を識別するべく遅発中性子シグネチャを評価することを含む方法。 - 前記評価するステップは、前記コンテナ内の識別された異なる元素の比を決定することを含む、請求項13に記載の方法。
- 前記比は、水素、炭素、窒素、及び酸素の2以上の比として計算される、請求項14に記載の方法。
- 前記評価するステップは、前記コンテナ内の前記特殊核物質を識別するべく核分裂事象を検出することを含む、請求項13に記載の方法。
- 前記照射するステップは、設定持続時間の中性子束を与えることを含む、請求項13に記載の方法。
- 前記設定持続時間は10秒未満である、請求項17に記載の方法。
- 前記検出するステップは、前記中性子束が与えられない間に行われる、請求項17に記載の方法。
- 前記検出するステップは5秒未満の間行われる、請求項19に記載の方法。
- 評価するステップは、前記特殊核物質を識別することを目的として時間差消滅評価を使用することを含む、請求項13に記載の方法。
- 前記検出するステップは、熱中性子から遮蔽された中性子検出器を使用する、請求項21に記載の方法。
- 前記照射するステップは前記中性子束をパルスにすることを含み、前記検出するステップは前記照射するステップの後に開始される、請求項22に記載の方法。
- 前記検出するステップはガンマ線検出器である追加検出器を使用することをさらに含み、
前記評価するステップは、前記物質を識別するべくガンマ線シグネチャを評価することをさらに含む、請求項13に記載の方法。 - 貨物専用のコンテナの内容物を検査する装置であって、
中性子源と、
放射線検出器と
を含み、
前記中性子源は、前記コンテナ内に中性子束を送達するべく構成され、
前記放射線検出器は、前記コンテナ内への前記中性子束の送達に引き続き前記コンテナから出る遅発中性子を検出して特殊核物質を識別するべく構成され、
前記遅発中性子の検出は、前記中性子束の送達中であって前記中性子束の送達開始から少なくとも1秒後の遅発中性子集団の成長に基づいて行われ、
前記中性子源及び放射線検出器は、船舶から貨物専用コンテナを降ろすべく構成されたクレーンに接続される装置。 - 前記中性子源は、
ジュウテリウム又はトリチウムのイオンを与えるべく構成されたイオン源と、
ジュウテリウム又はトリチウムの少なくとも一つを含む標的に向けて前記イオンを加速するべく構成された加速器と
を含む、請求項25に記載の装置。 - 前記標的は標的ガスを保持する標的チャンバを含み、
前記標的ガスは133.3から1333Paの範囲の圧力に維持される、請求項26に記載の装置。
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US28669009P | 2009-12-15 | 2009-12-15 | |
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PCT/US2010/060318 WO2011081940A1 (en) | 2009-12-15 | 2010-12-14 | Method and apparatus for performing active neutron interrogation of containers |
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CN103412320A (zh) * | 2013-07-29 | 2013-11-27 | 中国原子能科学研究院 | 一种皮秒级原子核寿命测量实验的高真空专用靶室 |
US9897556B2 (en) | 2014-05-08 | 2018-02-20 | National Technology & Engineering Solutions Of Sandia, Llc | Elemental analysis using temporal gating of a pulsed neutron generator |
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KR102619426B1 (ko) | 2017-01-18 | 2023-12-29 | 피닉스 엘엘씨 | 고출력 이온빔 발생기 시스템 및 방법 |
EP3707500A1 (de) * | 2017-05-31 | 2020-09-16 | Aachen Institute for Nuclear Training GmbH | Verfahren und vorrichtung zur multielementanalyse basierend auf neutronenaktivierung sowie verwendung |
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WO2011081940A1 (en) | 2011-07-07 |
PT2513640T (pt) | 2020-04-09 |
US9024261B2 (en) | 2015-05-05 |
EP2513640A4 (en) | 2015-07-22 |
ES2784048T3 (es) | 2020-09-21 |
JP2013514536A (ja) | 2013-04-25 |
JP2016029386A (ja) | 2016-03-03 |
CA2784115C (en) | 2018-02-06 |
EP2513640B1 (en) | 2020-02-05 |
EP2513640A1 (en) | 2012-10-24 |
JP6208730B2 (ja) | 2017-10-04 |
US20120286164A1 (en) | 2012-11-15 |
CA2784115A1 (en) | 2011-07-07 |
DK2513640T3 (da) | 2020-04-27 |
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