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Title: Test chamber for alpha spectrometry

Alpha emitters for low-level radiochemical analysis by measurement of alpha spectra are positioned precisely with respect to the location of a surface-barrier detector by means of a chamber having a removable threaded planchet holder. A pedestal on the planchet holder holds a specimen in fixed engagement close to the detector. Insertion of the planchet holder establishes an O-ring seal that permits the chamber to be pumped to a desired vacuum. The detector is protected against accidental contact and resulting damage.
Authors:
 [1]
  1. (Downers Grove, IL)
Publication Date:
OSTI Identifier:
862911
Report Number(s):
US 4045673
Resource Type:
Patent
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
chamber; alpha; spectrometry; alpha; emitters; low-level; radiochemical; analysis; measurement; alpha; spectra; positioned; precisely; respect; location; surface-barrier; detector; means; chamber; removable; threaded; planchet; holder; pedestal; planchet; holder; holds; specimen; fixed; engagement; close; detector; insertion; planchet; holder; establishes; o-ring; seal; permits; chamber; pumped; desired; vacuum; detector; protected; accidental; contact; resulting; damage; chemical analysis; o-ring seal; alpha emitters; positioned precisely; alpha emitter; accidental contact /250/