Intensities have been measured for 346 x-ray lines of kaonic atoms of elements and pure isotopes ranging from $Z=2\mathrm{}$ through $Z=92\mathrm{}$. Within experimental accuracy, isotopes of the same elements yielded equal intensities. However, a remarkable variation in intensities versus $Z$ was observed for kaonic transitions believed not to be significantly influenced by nuclear absorption. Fourteen x-ray lines from ${\Sigma }^{-}$-hyperonic atoms of light and medium-$Z$ elements were measured. Also observed were 29 nuclear $\gamma$-ray lines that followed kaon capture.

• Received 16 January 1974

DOI:https://doi.org/10.1103/PhysRevA.9.2282