Thin Film Window for Gas Flow Proportional Detector.
Abstract
The gas flow proportional detector used for counting radioisotopes incorporates a Micromil window which covers the open end of an ionization chamber. When it becomes contaminated or damaged, the window, with supporting metal ring, must be replaced with a new one at significant expense. A procedure was developed to reuse the rings in making new windows which are referred to here as gas flow ultrathin (GFUT) windows. The GFUT window has these advantages: it can be made in the laboratory from material that costs less than one cent per window; it is stronger than the commercial window; and it can be washed and reused. The time required to remove a damaged window, place a GFUT window on the same ring, and replace the window in the gas flow detectors is only 30 minutes. GFUT windows can be used satisfactorily in Nuclear-Chicago models D-47 and D-470 or similar systems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1972
- Accession Number
- AD0745579
Entities
People
- Clarence F. Theis
- Thomas D. Kay
Organizations
- United States Air Force School of Aerospace Medicine