RADIOACTIVE SELF-LUMINOUS COMPOUNDS. II. A SIMPLE METHOD FOR DETERMINING $beta$-ACTIVITY OF MICROCURIE ORDER IN SELF-LUMINOUS COMPOUNDS

Journal Article · Wed Jul 01 04:00:00 EDT 1959 · Nagoya Kogyo Gijutsu Shikensho Hokoku (Japan)

OSTI ID:4193573

Ato, Y; Fujimura, R

An aperture was used to reduce the number of beta particles arriving at an end-window-type Geiger-Mueller counter. The aperture, an Al plate having a hole at its counter, was inserted between the sample and the counter. S/sup 35/, Ca/sup 45/, Tl/sup 204/, P/sup 32/, and Sr/sup 90/- Y/sup 90/ were employed as beta sources. The reduction coefficients of apertures with various geometrical factors such as thickness, diameter, and location were determined for each isotope. Graphical data showing the relationship between the reduced counting rate and the radioactivity are given. The measurable level for Tl/sup 204/ was 500 mu c max with an error of less than 20%, (OID)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-012726
• OSTI ID: 4193573
• Journal Information: Nagoya Kogyo Gijutsu Shikensho Hokoku (Japan), Journal Name: Nagoya Kogyo Gijutsu Shikensho Hokoku (Japan) Vol. Vol: 8; ISSN NKGSA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ALUMINUM
ANNEALING
BETA PARTICLES
CALCIUM 45
COMPOUNDS
DIAGRAMS
ENGINEERING AND EQUIPMENT
ERRORS
GEIGER-MUELLER COUNTERS
LUMINESCENCE
MEASURED VALUES
MOLYBDENUM ALLOYS
NIOBIUM ALLOYS
PATENT
PHOSPHORUS 32
PLATES
PREPARATION
QUANTITY RATIO
RADIOACTIVITY
STRONTIUM 90
SULFUR 35
THALLIUM 204
THICKNESS
URANIUM ALLOYS
WINDOWS
YTTRIUM 90