Abstract
We propose to study the static quadrupole hyperfine structure in pionic and kaonic atoms with nuclear spin J⩾1. The non-spherical contributions of the strong interaction lead to variations of shifts and widths among individual hyperfine components which should be measurable in favourable cases. For nuclei with quadrupole deformation the strong interaction quadrupole pattern is shown to depend on two parameters only (quadrupole shift and width). These strong interaction quadrupole constants contain new information on the nuclear mass quadrupole density in a fairly model-independent way. Numerical results for selected nuclei are given, corrections and possible ways of analysing experimental data are discussed.
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