Test chamber for alpha spectrometry

Patent · Sat Jan 01 00:00:00 EST 1977

OSTI ID:862911

Larsen, Robert P ^[1]

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1. Downers Grove, IL

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 4045673
• OSTI ID: 862911
• Country of Publication: United States
• Language: English

Related Subjects

chamber
alpha
spectrometry
emitters
low-level
radiochemical
analysis
measurement
spectra
positioned
precisely
respect
location
surface-barrier
detector
means
removable
threaded
planchet
holder
pedestal
holds
specimen
fixed
engagement
close
insertion
establishes
o-ring
seal
permits
pumped
desired
vacuum
protected
accidental
contact
resulting
damage
chemical analysis
o-ring seal
alpha emitters
positioned precisely
alpha emitter
accidental contact
/250/