https://doi.org/10.1140/epjd/e2008-00025-3
X-ray transitions from antiprotonic noble gases
1
Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
2
Department of Computer Science, Bahria University, Sector E–8, Islamabad, 44000, Pakistan
3
Institut für Physik, Universität Kassel, 34132 Kassel, Germany
4
Laboratoire Kastler Brossel, UPMC–Paris 6 ENS CNRS, Case 74, 4 place Jussieu, 75005 Paris, France
5
Laboratory for Particle Physics, Paul Scherrer Institut, 5232 Villigen, Switzerland
Corresponding author: a d.gotta@fz-juelich.de
Received:
9
November
2007
Published online:
22
February
2008
The onset of antiprotonic X-ray transitions at high principal quantum numbers and the occurrence of electronic X-rays in antiprotonic argon, krypton, and xenon has been analyzed with the help of Multiconfiguration Dirac-Fock calculations. The shell-by-shell ionisation by Auger electron emission, characterised by appearance and disappearance of X-ray lines, is followed through the antiprotonic cascade by considering transition and binding energies of both the antiproton and the remaining electrons. Electronic lines could be attributed partly to specific states of the antiprotonic atom de-excitation.
PACS: 36.10.-k – Exotic atoms and molecules (containing mesons, muons, and other unusual particles) / 32.30.Rj – X-ray spectra
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
