Accession Number : AD0653448

Title :   STANDARDIZATION OF BETA COUNTING PROCEDURES USED AT NRL IN THE RADIOCHEMICAL ANALYSIS OF AIR FILTER SAMPLES.

Descriptive Note : Memorandum rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Saunders,A. W. , Jr. ; Patterson,R. L. , Jr. ; Lockhart,L. B. , Jr

Report Date : MAY 1967

Pagination or Media Count : 32

Abstract : The calibration of beta counting systems used for the quantitative determination of radionuclides in air filter collections is described. Solid calibration standards are prepared from a variety of standardized sources of radioisotopes of different beta energies by mounting in a reproducible geometry 50.0- and 25.0-mg quantities of carrier material containing known amounts of radioactivity. A calibration curve of counting efficiency vs. beta-max energy is constructed for each counting system, from which the counting efficiency of a wide variety of radionuclides having nonforbidden spectra can be derived. (Author)

Descriptors :   (*RADIOCHEMISTRY, *RADIATION MEASURING INSTRUMENTS), (*BETA PARTICLES, COUNTING METHODS), FALLOUT, FISSION PRODUCTS, GAS FILTERS, CALIBRATION, RADIOACTIVITY, INSTRUMENTATION, STANDARDS, BETA RAY SPECTRUM, GEIGER COUNTERS

Subject Categories : Radiation and Nuclear Chemistry
      Nuclear Instrumentation
      Radioactiv, Radioactive Wastes & Fission Prod

Distribution Statement : APPROVED FOR PUBLIC RELEASE