3 papers
physics.atom-ph2017
Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: The 1s Lamb shift in hydrogen-like gold
T. Gassner, M. Trassinelli, R. Heß +40
Accurate spectroscopy of highly charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method has been applied for…
physics.atom-ph2016
Measurement of the charged pion mass using a low-density target of light atoms
M Trassinelli, D. F. Anagnostopoulos, G Borchert +10
We present a new evaluation of the negatively charged pion mass based on the simultaneous spec-troscopy of pionic nitrogen and muonic oxygen transitions using a gaseous target comp…
physics.atom-ph2016
Measurement of the charged pion mass using X-ray spectroscopy of exotic atoms
M Trassinelli, D. F. Anagnostopoulos, G. Borchert +10
The transitions in pionic nitrogen and muonic oxygen were measured simultaneously by using a gaseous nitrogen-oxygen mixture at 1.4\,bar. Due to the precise knowledge of th…