skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Selective flow path alpha particle detector and method of use

Abstract

A method and apparatus for monitoring alpha contamination are provided in which ions generated in the air surrounding the item, by the passage of alpha particles, are moved to a distant detector location. The parts of the item from which ions are withdrawn can be controlled by restricting the air flow over different portions of the apparatus. In this way, detection of internal and external surfaces separately, for instance, can be provided. The apparatus and method are particularly suited for use in undertaking alpha contamination measurements during the commissioning operations.

Inventors:
 [1];  [1];  [1];  [2]
  1. Sellafield, Seascale, Cumbria, GB
  2. P.O. Box 1663, Los Alamos, NM 87545
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
874764
Patent Number(s):
6455859
Assignee:
Orr; Christopher Henry (Sellafield, Seascale, Cumbria, GB); Luff; Craig Janson (Sellafield, Seascale, Cumbria, GB); Dockray; Thomas (Sellafield, Seascale, Cumbria, GB); Macarthur; Duncan Whittemore (P.O. Box 1663, Los Alamos, NM 87545)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
selective; flow; path; alpha; particle; detector; method; apparatus; monitoring; contamination; provided; generated; air; surrounding; item; passage; particles; moved; distant; location; withdrawn; controlled; restricting; portions; detection; internal; external; surfaces; separately; instance; suited; undertaking; measurements; commissioning; operations; air flow; flow path; external surface; /250/

Citation Formats

Orr, Christopher Henry, Luff, Craig Janson, Dockray, Thomas, and Macarthur, Duncan Whittemore. Selective flow path alpha particle detector and method of use. United States: N. p., 2002. Web.
Orr, Christopher Henry, Luff, Craig Janson, Dockray, Thomas, & Macarthur, Duncan Whittemore. Selective flow path alpha particle detector and method of use. United States.
Orr, Christopher Henry, Luff, Craig Janson, Dockray, Thomas, and Macarthur, Duncan Whittemore. Tue . "Selective flow path alpha particle detector and method of use". United States. https://www.osti.gov/servlets/purl/874764.
@article{osti_874764,
title = {Selective flow path alpha particle detector and method of use},
author = {Orr, Christopher Henry and Luff, Craig Janson and Dockray, Thomas and Macarthur, Duncan Whittemore},
abstractNote = {A method and apparatus for monitoring alpha contamination are provided in which ions generated in the air surrounding the item, by the passage of alpha particles, are moved to a distant detector location. The parts of the item from which ions are withdrawn can be controlled by restricting the air flow over different portions of the apparatus. In this way, detection of internal and external surfaces separately, for instance, can be provided. The apparatus and method are particularly suited for use in undertaking alpha contamination measurements during the commissioning operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

Save / Share: