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Giant dipole resonances built on isobaric analog states in pion double charge exchange

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ;
Giant resonances were observed in (..pi../sup +/,..pi../sup -/) double charge exchange (at T/sub ..pi../ = 292 MeV) on /sup 56/Fe, /sup 80/Se, and /sup 208/Pb at excitation energies of 28.5, 34.6, and 43.6 MeV, respectively. An angular distribution for /sup 56/Fe was measured and observed to have a dipole shape. The variation of excitation energy above the double isobaric analog state is consistent with an A/sup -1/3/ dependence, as expected for giant dipole resonances built on the isobaric analog states. The /sup 56/Fe angular distribution agrees well with a coupled-channels impulse-approximation calculation in which sequential single charge exchange through the isobaric analog to the giant dipole resonance is evaluated.
Research Organization:
Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
OSTI ID:
5670514
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:5; ISSN PRLTA
Country of Publication:
United States
Language:
English

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Related Subjects

651620* -- Nuclear Properties & Reactions
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651920 -- Nuclear Properties & Reactions
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOSONS
CHARGE EXCHANGE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
GIANT RESONANCE
HADRON REACTIONS
HADRONS
INELASTIC SCATTERING
INFORMATION
IRON 56 TARGET
ISOBARIC ANALOGS
LEAD 208 TARGET
MESON REACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUMERICAL DATA
PION PLUS REACTIONS
PION REACTIONS
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
RESONANCE
RESONANCE SCATTERING
SCATTERING
SELENIUM 80 TARGET
TARGETS