Doppler-shift assisted fast ion spectroscopy: a case study for X-ray emission from 277 MeV/u Pb(sup 81+) ions

摘要

Utilizing the different information from spatially separated segments of high-granular photon detectors the measured (LAB) energy of photons emitted by fast moving ions can be corrected individually for the Doppler effect according to the particular observation angles of each detector segment. By a redundant fitting procedure the center of mass photon energy can be determined with high precision. This new Doppler-shift assisted spectroscopy is explained for the case study of 277.4 MeV/u Pb(sup 82+) ions colliding with a N(sub 2)-gas target at the heavy ion storage ring ESR. Spectroscopic information for hydrogenic Pb(sup 81+) ions is given for the ground-state transitions, for the Balmer transitions, as well as for the total K-binding energy. (orig.) (ERA citation 20:006813)