Title: Test chamber for alpha spectrometry

Abstract: 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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Larsen, Robert P. (Downers Grove, IL, US)

Application Number: 685589
Filing Date: 1976-05-12
Publication_date: 1977-08-30
Assignee: The United States of America as represented by the United States Energy (Washington, DC)
Primary Class(es): 250/364 250/336.1, 250/370.02
Other Classes:
US Patent Ref:

3458701	Jul, 1969	Schell	250/364.
3988587	Oct, 1976	Shrev, Jr. et al.	250/364.

Other Refs:
Primary Examiner: Borchelt, Archie R.
Assistant Examiner:
Attorney: Carlson; Dean E., Jackson; Frank H., Reynolds; Donald P.