Author/Authors :
M. Augsburger، نويسنده , , D.F. Anagnostopoulos، نويسنده , , G. Borchert، نويسنده , , D. Chatellard، نويسنده , , J.-P. Egger، نويسنده , , P. El-Khoury، نويسنده , , H. Gorke، نويسنده , , D. Gotta، نويسنده , , P. Hauser، نويسنده , , P. Indelicato، نويسنده , , K. Kirch، نويسنده , , S. Lenz، نويسنده , , K. Rashid، نويسنده , , Th. Siems، نويسنده , , L.M. Simons، نويسنده ,
Abstract :
Antiprotonic deuterium Kα X-rays were seen for the first time. Their analysis resulted in spin-averaged 1s strong interaction parameters, namely −1050±250 eV (repulsive) for the 1s shift and 1100±750 eV for the 1s width. The large errors are mainly due to low statistics. In addition, values for the Kα/Lα and Ltotal/Lα yields at low pressure (20 mbar) were obtained: 0.005±0.003 and 1.34±0.05. Furthermore, a 2p mean absorption width of 80 ≤Γ2p≤ 350 meV was deduced. The results for the 1s ground state are somewhat surprising, especially the narrow 1s width which is similar to the spin-averaged antiprotonic hydrogen 1s width. However, our 1s width is in agreement with low-energy scattering data [A. Zenoni et al., Phys. Lett. B 461 (1999) 413] (see preceding paper).
