Single and double grid long-range alpha detectors

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868701

MacArthur, Duncan W ^[1]; Allander, Krag S ^[2]

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1. Los Alamos, NM
2. Ojo Caliente, NM

Alpha particle detectors capable of detecting alpha radiation from distant sources. In one embodiment, a voltage is generated in a single electrically conductive grid while a fan draws air containing air molecules ionized by alpha particles through an air passage and across the conductive grid. The current in the conductive grid can be detected and used for measurement or alarm. Another embodiment builds on this concept and provides an additional grid so that air ions of both polarities can be detected. The detector can be used in many applications, such as for pipe or duct, tank, or soil sample monitoring.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-36
• Assignee: University of California Patent, Trademark & Copyright Office (Alameda, CA)
• Patent Number(s): US 5194737
• Application Number: 07/773,002
• OSTI ID: 868701
• Country of Publication: United States
• Language: English

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