Electron screening and inner shell refilling in pionic atoms
Abstract
Using a bent crystal spectrometer and a Ge detector, we have determined the energies of five pionic transitions possessing sizable electron screening corrections. In three of the cases studied, depletion of the inner-electron shells through Auger processes in preceding cascades is known to occur and these shells may be highly ionized when the pionic X-ray is emitted. In the other two cases studied, no depletion of the 1s electron shell is expected. Our findings for all transitions agree well with the calculated screening correction assuming full electron shells. We conclude that for medium and heavy pionic atoms electronic refilling takes place prior to emission of observable pionic X-rays.
- Publication:
-
Physics Letters B
- Pub Date:
- May 1980
- DOI:
- 10.1016/0370-2693(80)90310-X
- Bibcode:
- 1980PhLB...92...87B