THE SPECIFIC ACTIVITY OF RADIUM

Journal Article · Sun Mar 01 04:00:00 EST 1959 · Intern. J. Appl. Radiation and Isotopes

DOI:https://doi.org/10.1016/0020-708X(59)90253-4· OSTI ID:4272937

Martin, G R; Tuck, D G

BS>A critical assessment has been made of the published information on disintegration energies in the radium series, and a value obtained for the mean energy deposition per radium disintegration in sealed sources of known history. This, when combined with Mann's recent calorimetric measurements on the heating effects in several national primary radium standards prepared by Honigschmid, gives a value for the specific activity of radium of 3.655 x 10/sup 10/ disintegrations per second per gram, corresponding to a disintegration constant of 4.326 x 10/sup -4//year, or a half life of 1602 years. (auth)

• Research Organization: Univ. of Durham, Eng.; Univ. of Manchester, Eng.
• NSA Number: NSA-13-012111
• OSTI ID: 4272937
• Journal Information: Intern. J. Appl. Radiation and Isotopes, Journal Name: Intern. J. Appl. Radiation and Isotopes Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CALORIMETERS
DECAY
ENERGY
HALF-LIFE
HEATING
MEASURED VALUES
PHYSICS AND MATHEMATICS
RADIOACTIVITY
RADIUM
SEALS