DOSE CONSTANT OF RADIUM

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Naturwissenschaften (West Germany)

DOI:https://doi.org/10.1007/BF00597476· OSTI ID:4051389

Rajewsky, B; Sewkor, A

The numerous absolute measurements of the dose constant of radium in equilibrium with its decay products show large variations and ranges of error. A new measurement was carried out using two ionization chambers. The dose output of a radiation source (298 mg Ra-El. with 0.5 mm Pt filters) was measured by the Townsend method in a free air space 26 m long, 24 m wide, and 22 m high. The attenuation coefficient of primary gamma radiation in air was first determined. After consideration of all corrections and the contribution of the scattered radiation, a value of 8.13 plus or minus 0.2 r x cm/sup 2/ x hr/sup -//sup 1/ x mg/sup -//sup 1/ was obtained. A calculated value, obtained using the latest absorption cross section and other physical data of 8.30 plus or minus 5% r x cm/sup 2/ x hr/sup -//sup 1/ x mg/sup -//sup 1/ compares favorably with the experimental value. (J.S.R.)

• Research Organization: Max-Planck-Institut fur Biophysik, Frankfurt am Main
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-021003
• OSTI ID: 4051389
• Report Number(s): NP-tr-875; 0028-1042
• Journal Information: Naturwissenschaften (West Germany), Journal Name: Naturwissenschaften (West Germany) Vol. Vol: 48; ISSN NATWA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

ABSORPTION
AIR
CONFIGURATION
CROSS SECTIONS
DECAY
DOSIMETRY
ERRORS
FILTERS
FISSION PRODUCTS
GAMMA RADIATION
HEALTH AND SAFETY
IONIZATION CHAMBERS
MATHEMATICS
MEASURED VALUES
PERFORMANCE
PLATINUM
RADIATION DOSES
RADIATION SOURCES
RADIUM
SHELLS