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Low-energy pion double charge exchange and nucleon-nucleon correlations in nuclei

Conference ·
OSTI ID:5724418
Recent measurements of pion double-charge exchange (DCX) at energies 20 to 70 MeV are providing a new means for studying nucleon-nucleon correlations in nuclei. At these energies the nucleus is relatively transparent, allowing simpler theoretical models to be used in interpreting the data and leading to a clearer picture. Also the contribution to DCX of sequential charge-exchange scattering through the intermediate analog state is suppressed near 50 MeV and transitions through non-analog intermediate states become very important. Recent theoretical studies by several groups have shown that while transitions through the analog route involve relatively long nucleon-nucleon distances, those through non-analog intermediate states obtain nearly half their strength from nucleon pairs with less than 1 fermi separation. Thus DCX near 50 MeV is an excellent way to study short-range nucleon-nucleon correlations. 31 refs., 29 figs., 4 tabs.
Research Organization:
Los Alamos National Lab., NM (USA)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
5724418
Report Number(s):
LA-UR-89-2981; CONF-8908131-1; ON: DE89016971
Country of Publication:
United States
Language:
English

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Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM ISOTOPES
CARBON 14
CARBON ISOTOPES
CHARGE EXCHANGE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY DEPENDENCE
ENERGY LEVELS
EVEN-EVEN NUCLEI
GROUND STATES
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MAGNETIC SPECTROMETERS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MESON REACTIONS
MISSING-MASS SPECTRA
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PION REACTIONS
RADIOISOTOPES
SHELL MODELS
SPECTRA
SPECTROMETERS
YEARS LIVING RADIOISOTOPES