EVIDENCES FOR OCTUPOLE AND QUADRUPOLE VIBRATIONAL STATES IN Pb$sup 205$. Technical Note No. 7

Technical Report · Fri Sep 01 04:00:00 EDT 1961

OSTI ID:4817429

Bergstroem, I; Bonacalza, E C.O.; Thieberger, P

S>It is shown by internal conversion coefficient measurements that the 2610 and 2567 kev states in Pb/sup 205/ are 9/2+. It is suggested that the upper state is mainly due to the coupling of the 3- octupole core vibrational state and the 5/2- neutron hole ground state. Angular correlation measurements were made between the El gamma rays going from the 2610 and 2567 kev states to the 703 kev state, and the 703 kev gamma ray de-exciting this state. If the El transistions are both assumed to be pure, it follows that thc 703 kev gamnda ray is due to 98% E2 radiation and 2% Ml radiation. The strong E2 enhancement in the 703 kev ground state transition (7/2-yields 5/2-) suggests that the 703 kev state might be due to one phonon quadrupole core vibration coupled to the 5/2- ground state of the odd neutron. There are also some evidences for the 1615 kev state being originated by a similar coupling between the odd neutron ground state and two phonon quadrupole coie vibration. (auth)

• Research Organization: Sweden. Kungliga Tekniska Hogskolan, Stockholm; and Sweden. Kungliga Vetenskapsakademien. Nobelinstitut for Fysik, Stockholm
• NSA Number: NSA-16-019744
• OSTI ID: 4817429
• Report Number(s): AFOSR-1565; AD-266646
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
ENERGY LEVELS
GAMMA RADIATION
INTERNAL CONVERSION
LEAD 205
MEASURED VALUES
OCTUPOLES
OSCILLATIONS
PARITY
PHYSICS
QUADRUPOLES
SPIN
TRANSIENTS
VIBRATIONAL STATE