Abstract
We have examined a possibility of determining the pion-nucleus potential parameters from the quadrupole hyperfine structure of the deeply bound pionic atoms in deformed nuclei. It is shown that the potential parameter sets, which lead to the similar level shifts and widths for spherical nuclei, predict fairly different hyperfine structure in deformed nuclei. However, the individual hyperfine levels overlap due to the large widths of deeply bound pionic levels and the detailed level structure is masked somewhat. The sensitivity of the pionic X-ray transition spectrum to the different potential parameter sets is also studied and could be used to distinguish the potential parameter sets experimentally.
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