EXPERIMENTAL STUDY OF PIONIC CA AND TI AND EXAMINATION OF THE PION - NUCLEAR POTENTIAL FOR LOW Z NUCLEI - INSPIRE

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EXPERIMENTAL STUDY OF PIONIC CA AND TI AND EXAMINATION OF THE PION - NUCLEAR POTENTIAL FOR LOW Z NUCLEI

1980

24 pages

Published in:

Nucl.Phys.A 336 (1980) 475-498

Published: 1980

DOI:

10.1016/0375-9474(80)90222-5

View in:

Nuclear Science References

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Abstract: (Elsevier)

We report the measurement of the strong interaction shifts and widths of the 3d → 2p transitions in pionic 40,42,43,44,48 Ca and 46,48,50 Ti. Using these new data in combination with earlier low- Z pionic data (6 ≦ Z ≦ 16), we have studied, in a purely phenomenological way, the pion-nuclear optical potential. Employing nuclear-structure information from Hartree-Fock calculations and measured charge densities, we have fitted the pion-nuclear potential parameters to the pionic atom data. The effect of adding an isovector dependence to the s- and p-wave two-nucleon terms has been investigated. We have also explored the sensitivity of these data to the value of the Lorentz-Lorenz parameter ξ. A small but definite sensitivity to the latter parameter has been observed with the best fit value of ξ being significantly greater than 1. We have used the phenomenological potentials to determine the neutron radii of the Ca and Ti isotopes and, in fact, find reasonable agreement with Hartree-Fock predictions and with the results of other hadronic probes.

Atomic physics
PI-: MESIC ATOM
CALCIUM: MESIC ATOM
CALCIUM: NUCLIDE
TITANIUM: NUCLIDE
TITANIUM: MESIC ATOM
TRANSITION
POTENTIAL: OPTICAL
APPROXIMATION: HARTREE-FOCK
TABLES

References(61)

Figures(0)

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