DETERMINATION OF THE NUMBER OF $gamma$ QUANTA PER La$sup 140$ DECAY

Journal Article · Tue Jul 01 04:00:00 EDT 1958 · Izvest. Akad. Nauk S.S.S.R. Ser. Fiz.

OSTI ID:4277414

Khol'nova, E A

The experimental determination of the number of gamma quanta per decay was based on the calorimetric measurements of the heat produced in absorption of beta and gamma rays emitted by the isotope. On the basis of existing data the mean value of the La/sup 140/ beta spectrum was evaluated to equal 445 kev. The number of gamma quanta for the 1597-kev line, the relative intensity of which is taken as unity, is equal to 0.95. The number of gamma quanta for other gamma lines was calculated on the basis of the quantity found and their relative intensities. The mean gamma energy per one decay was found to be 200 kev. For beta particles, the total mean energy per decay was 1310 kev, which is about 300 kev less tban that given in decay tables. This indicates an error in the intensity of the initially used beta component. However, the results hold for the gamma quanta number. (R.V.J.)

• Research Organization: Mendeleev All-Union Research Inst. in Metrology
• NSA Number: NSA-13-005031
• OSTI ID: 4277414
• Journal Information: Izvest. Akad. Nauk S.S.S.R. Ser. Fiz., Journal Name: Izvest. Akad. Nauk S.S.S.R. Ser. Fiz. Vol. Vol: 22
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
BETA PARTICLES
CALORIMETERS
DECAY
ENERGY
ENERGY LEVELS
ERRORS
GAMMA RADIATION
LANTHANUM 140
MEASURED VALUES
NUMERICALS
PHYSICS AND MATHEMATICS
SPECTRA