SUPERFLUIDITY AND THE EXCITED STATES OF SPHERICAL NUCLEI HAVING AN ODD ATOMIC NUMBER

Journal Article · Tue Oct 01 04:00:00 EDT 1963 · Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.)

OSTI ID:4108324

Birbrair, B L

Pair correlation is ordinarily applied to an atomic nucleus by using a boson approximation. Field theory is applied to a system of interacting quasiparticles in order to explain the break-down of a phonon into two quasiparticles, and other virtual processes such as the emission or absorption of a phonon by a quasiparticle. A model hamiltonian of the nucleus was considered with pairing and quadrupole-quadrupole interaction. It was found that single- particle states exist nn nuclei with odd A, and the quadrupole-quadrupole interaction has practically no effect on the energy of these states. The ground state of a nucleus with odd A ns always a state of this type. The method of establishing the type of excited state in a nucleus with odd A is to compare the theoretical and experimental values of the reduced probability or an E2- transition between the state in question and any other state known to be a singleparticle state (for example, a ground state). This transition is a pure collective transition so that the value of B(E2) can exceed the single-particle value by a considerable amount. It is thus possible to calculate the energies and B(E2) values of the first 2/sup +/ levels in nuclei with odd A. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-18-007723
• OSTI ID: 4108324
• Journal Information: Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.), Journal Name: Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.) Vol. Vol: 27; ISSN IANFA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
BOSONS
COLLECTIVE MODEL
CONFIGURATION
CRYOGENICS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EMISSION
ENERGY LEVELS
FIELD THEORY
HAMILTONIAN
INTERACTIONS
NUCLEAR MODELS
NUCLEONS
NUMERICALS
PARITY
PARTICLE MODELS
PHONONS
PHYSICS
PROBABILITY THEORY
QUADRUPOLES
QUANTUM MECHANICS
QUASI PARTICLES
SHELL MODELS
SINGLE-PARTICLE MODEL
SOUND
SPIN
STATISTICS
SUPERFLUIDITY
TRANSIENTS
VISCOSITY