Positive-pion double-charge-exchange reaction: experiments on the isotopic pairs oxygen-16,18 and magnesium-24,26

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6045928

Greene, S J

The (..pi../sup +/,..pi../sup -/) double-exchange (DCX) reaction has been performed on targets of T = 0,1 isospin (and isotopic) pairs /sup 16/ /sup 18/O and /sup 24/ /sup 26/Mg. Energy excitation functions of dsigma/d..cap omega.., across the (3,3) ..pi..-N resonance, are presented for transitions to double-isobaric analog state (DIAS) and non-DIAS ground-state residual nuclei. Angular distributions in the region of 5/sup 0/ to 33/sup 0/ are presented for the DIAS from the T - 1 nuclei. The simularities and differences of DIAS and non-DIAS distributions are discussed in relation to reaction-mechanism and nuclear-structure effects. Also, a simple, two-amplitude model for the /sup 18/O excitation function, consistent with the data, is presented. The utility of DCX in nuclear mass measurements is discussed, with some examples.

• Research Organization: Texas Univ., Austin (USA)
• OSTI ID: 6045928
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOSONS
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
HADRON REACTIONS
HADRONS
INFORMATION
ISOBARIC ANALOGS
MAGNESIUM 24 TARGET
MAGNESIUM 26 TARGET
MATHEMATICAL MODELS
MESON REACTIONS
MESONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 TARGET
OXYGEN 18 TARGET
PION PLUS REACTIONS
PION REACTIONS
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
TARGETS