Abstract
Some time after its formation an exotic atom may be considered a hydrogen-like system consisting of a nucleus and an exotic particle in a bound state. In this situation it is an ideal tool to study cascade properties, while for the innermost orbits it can be used to probe the interaction with the nucleus. From an extended series of experiments using high resolution X-ray spectroscopy for both aspects typical examples are reported and preliminary results are given: 1. To determine the complex scattering length in \({\bar p}\)H the \({\text{3D}} \to 2{\text{P}} \) hyperfine transitions have been measured. 2. To determine the pion mass the 5 \(\to \) 4 transitions in \(\pi ^{14} \)N have been studied. In all cases a major contribution to the uncertainty originates from the calibration. Therefore a new method is proposed that will establish a universal set of high precision calibration lines for pionic, muonic and electronic systems.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. Anagnostopoulos et al., CERN/PSCC/90-9/P124 (1990); G. Borchert et al., SPSLC/94-17/P124 Add. 3 (1993) (PS207).
D.F. Anagnostopoulos et al., Phys. Atomic Nuclei 59(9) (1996) 1503.
D.F. Anagnostopoulos et al., Nuclear Phys. B 56A (1997) 84.
G. Borchert et al., PSI proposal R-49-01.1 (1994) and R-97-02.1 (1997).
D. Anagnostopoulos et al., in: Proc. of the 3rd Internat. Conf. on Nuclear Physics at Storage Rings, STORI '96, Nuclear Phys. A 626 (1997) 375.
S. Lenz et al., Phys. Rev. Lett. B 416 (1998) 50.
L. Simons, Phys. Scripta 22 (1988) 90
E. Borie and B. Jödicke, Comput. Phys. 2(6) (1988) 61.
S. Barmo, H. Pilkuhn and G. Schlaile, Z. Phys. A 301 (1981) 283.
S. Boucard and P. Indelicato, Private communication (1996).
J. Carbonell, G. Ihle and J.-M. Richard, Z. Phys. A 344 (1989) 329 and references therein.
S. Boucard and P. Indelicato, Private communication (1997).
M. Deutsch et al., Phys. Rev. A 51 (1995) 283.
B. Jeckelmann, P.F.A. Goudsmit and H.J. Leisi, Phys. Lett. B 335 (1994) 326.
K. Assamagan et al., Phys. Rev. D 53 (1996) 6065.
B. Jeckelmann et al., Nuclear Phys. A 457 (1986) 709.
T. Siems, Thesis, University of Cologne (1998).
Rights and permissions
About this article
Cite this article
Borchert, G., Anagnostopoulos, D., Augsburger, M. et al. High precision X-ray spectroscopy in hydrogen-like fermionic and bosonic atomic systems. Hyperfine Interactions 114, 157–164 (1998). https://doi.org/10.1023/A:1012674522206
Issue Date:
DOI: https://doi.org/10.1023/A:1012674522206