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Observing a single hydrogen-like ion in a Penning trap at T = 4 K (1998)

Diederich, M. ; Häffner, H. ; Hermanspahn, N. ; [weitere]

Springer

Hyperfine interactions 115 (1998), S. 185-192

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ISSN: 1572-9540

Schlagwort(e): Penning trap ; highly charged ions

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract We describe how a single hydrogen-like ion (C5+) is prepared, cooled with the method of resistive cooling and non-destructively detected with the image-current technique in a cryogenic Penning trap at T = 4 K. The storage time for C5+-ions in the cryogenically pumped vacuum chamber is longer than six months. The experimental techniques of preparing, cooling and detecting highly-charged ions in a Penning trap are relevant for precision experiments such as g-factor measurements, mass spectroscopy and laser spectroscopy.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1012665109427

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Digitale Medien

Laser spectroscopy of the 1s HFS of H-like ions at a bunched beam in the storage ring ESR (1998)

Seelig, P. ; Dax, A. ; Faber, S. ; [weitere]

Springer

Hyperfine interactions 114 (1998), S. 135-139

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ISSN: 1572-9540

Schlagwort(e): QED ; HFS ; hyperfine splitting ; hydrogen-like ; Bohr-Weisskopf

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The investigation of the 1s HFS provides a good possibility for testing QED effects in a combination of a strong electric and magnetic field. Here, we report about the laserspectroscopic measurements of the ground state hyperfine splitting in 207Pb81+. To handle this M1-transition in the infrared optical regime with its long lifetime, we developed a new detection technique using a bunched ion beam. For the observation of fluorescence light, a new mirror system is adapted to the emission characteristics from an ion beam at relativistic velocities.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1012618404459

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Digitale Medien

Testing atomic structure theories with high accuracy mass measurements on highly charged ions (2000)

Häffner, H. ; Hermanspahn, N. ; Indelicato, P. ; [weitere]

Springer

Hyperfine interactions 127 (2000), S. 271-276

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ISSN: 1572-9540

Schlagwort(e): atomic structure ; mass measurements ; Penning trap

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The mass of a highly charged ion is the sum of the mass of the nucleus, the mass of the electrons and the electronic binding energies. High accuracy mass measurements on highly charged ions in a sequence of different charge states yield informations on atomic binding energies, i.e., the ionisation potentials. In our contribution we discuss the possibility of determining atomic binding energies of highly charged ions to better than 20 eV via cyclotron frequency measurements in a Penning trap. At this level of accuracy different contributions to the binding energies, like relativistic corrections, Breit corrections and QED corrections, can be measured.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1012664205870

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