Magnetic moments of mirror nuclei: polarization transfer in nuclear reactions

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5976289

Hugg, J W

The magnetism of free nucleons is analyzed in the quark model with virtual meson corrections. When nucleons are bound in an atomic nucleus their magnetism is altered by the exchange of charged mesons between pairs of nucleons. To study mesonic currents in nuclei the magnetic moments of mirror nuclei can be used to separate meson exchange effects from configuration mixing effects. Renormalized (effective) bound nucleon g-factors are derived from measured mirror magnetic moments and shell model matrix elements. Spin and orbital momentum distributions are deduced for mirror nuclei. The magnetic moments of four beta-active mirror nuclei (/sup 25/Al, /sup 27/Si, /sup 31/S, and /sup 39/Ca) are measured by a new technique. The polarized nuclei are produced in polarized deuteron and proton reactions. The product polarization is measured by the beta-decay asymmetry. A nuclear magnetic resonance depolarization technique destroys the asymmetry to measure the magnetic moments. Polarization transfer to beta emitting nuclei is observed in seventeen reactions. The polarization transfer mechanisms are described by a spectator model for polarized deuteron stripping reactions and by a quasi-elastic scattering model for polarized proton charge-exchange reactions. A distorted-wave Born approximation calculation of polarization transfer confirms the existence of a strong spin tensor force in the two nucleon interaction.

• Research Organization: Stanford Univ., CA (USA)
• OSTI ID: 5976289
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALUMINIUM 25
ALUMINIUM ISOTOPES
ANGULAR MOMENTUM
BARYON REACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORN APPROXIMATION
BOSONS
CALCIUM 39
CALCIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
DATA
DECAY
DEUTERON REACTIONS
DIRECT REACTIONS
DWBA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXCHANGE INTERACTIONS
EXPERIMENTAL DATA
HADRON REACTIONS
HADRONS
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MAGNETIC MOMENTS
MATHEMATICAL MODELS
MESONS
MIRROR NUCLEI
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORBITAL ANGULAR MOMENTUM
PARTICLE MODELS
PARTICLE PROPERTIES
PROTON REACTIONS
QUARK MODEL
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RADIOISOTOPES
SCATTERING
SECONDS LIVING RADIOISOTOPES
SILICON 27
SILICON ISOTOPES
SPIN
STRIPPING
SULFUR 31
SULFUR ISOTOPES
THEORETICAL DATA
TRANSFER REACTIONS