ENERGY LEVELS IN Bi$sup 207$ FROM THE DECAY OF Po$sup 20$$sup 7$

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Arkiv Fysik

OSTI ID:4328526

Arbman, E; Burde, J; Gerholm, T R

The energy levels in Bi/sup 207/ have been studied from the decay of 5.7 hr Po/sup 207m/. The experiments include measurements of the energies and intensities of conversion electron lines and positron distributions in a double focusing spectrometer; measurements of gamma-ray spectrum in a scintillation spectrometer and to some extent in the double focusing spectrometer by the use of a lead converter; measurements of coincidences between pairs of conversion lines and between positrons and conversion lines in a double lens coincidence spectrometer, and coincidences between positrons and gamma rays in a beta-gamma coincidence spectrometer. Two positron components of maximum energies 1140 kev and 893 kev were found, establishing the total decay energy of Po/sup 207/ as 2.906 Mev. The proposed decay scheme contains 16 excited levels, 11 of which are considered to be well established. Spins and parities for the ground state of Po/ sup 207/ and the most strongly populated excited levels in Bi/sup 207/ are given. The decay of Po/sup 207/ is discussed on the basis of the shell model. (auth)

• Research Organization: Univ. of Uppsala
• NSA Number: NSA-12-012535
• OSTI ID: 4328526
• Journal Information: Arkiv Fysik, Journal Name: Arkiv Fysik Vol. Vol: 13
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BISMUTH 207
COINCIDENCE METHODS
CONVERSION
DECAY
DISTRIBUTION
ELECTRONS
ENERGY
ENERGY LEVELS
EXCITATION
GAMMA RADIATION
LEAD
MEASURED VALUES
PARITY
PHYSICS
POLONIUM 207
POSITRONS
SCINTILLATION COUNTERS
SPECTRA
SPECTROMETERS
SPIN