Untitled

Borneis, S.; Dax, A.; Engel, Thomas; Holbrow, Charles H.; Huber, G.; Kühl, T.; Marx, D.; Merz, P.; Quint, W.; Schmitt, Felix; Seelig, P.; Tomaselli, M.; Winter, H.; Beckert, K.; Franzke, B.; Nolden, F.; Reich, H.; Steck, M.

doi:10.1023/a:1012676508596

Cited by 20 publications

(13 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laser spectroscopy measurements have been performed for the encircled ions, i.e. the ground state (1s) hyperfine splitting in hydrogen-like ions has previously been measured in holmium 165 Ho 66+ [32], rhenium 185,187 Re 74+ [33], thallium 203,205 Tl 80+ [34], lead 207 Pb 81+ [35,36] and bismuth 209 Bi 82+ [36,37]. Ground state (2s) hyperfine measurements in lithium-like bismuth 209 Bi 80+ have been performed [38] (Beiersdorfer et al 2007, private communication), but the results were inconclusive.…”

Section: Forbidden Transitions In Highly Charged Ionsmentioning

confidence: 99%

Precision laser spectroscopy without optical detection

Vogel

Quint

2010

Hyperfine Interact

View full text Add to dashboard Cite

Laser spectroscopy of trapped ions is likely to be limited by the availability of suitable detection systems for fluorescence photons, especially in the infrared transition frequency domain. This restriction can be circumvented when ions are stored in a Penning trap with an additional magnetic field inhomogeneity which couples the ion oscillation frequencies to the oscillation energies in a well-defined way. In such a case, laser cooling (or heating) on the optical transition of interest can be detected electronically by a corresponding shift of the ion oscillation frequency. Thereby, the transition of interest can be determined with high accuracy using only a single stored ion and in absence of any optical detection system.

show abstract

Section: Forbidden Transitions In Highly Charged Ionsmentioning

confidence: 99%

Precision laser spectroscopy without optical detection

Vogel

Quint

2010

Hyperfine Interact

View full text Add to dashboard Cite

show abstract

“…There also exist two measurements of the 2s ground state HFS in Li-like bismuth ( 209 Bi 80+ ). A direct measurement [13] was carried out at the ESR, but unfortunately no resonance could be observed at the Figure 2. Schematic of the Penning trap that will be used to measure ground-state hyperfine splittings in highly charged ions.…”

Section: Laser Spectroscopymentioning

confidence: 99%

Atomic physics experiments with trapped and cooled highly charged ions

Kluge

Quint

Winters

2007

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Trapping and cooling techniques have become very important for many fundamental experiments in atomic physics. When applied to highly charged ions confined in Penning traps, these procedures are very effective for testing quantum electrodynamics in extreme electromagnetic fields produced by heavy highly charged ions such as uranium U 91+ . In addition, fundamental constants or nuclear ground state properties can be determined with high accuracy in these simple systems. Finally, by studying a single trapped radioactive ion, its nuclear decay can be studied in detail by observing the disappearance of the signal of the mother and the appearance of that of the daughter isotope. Such experiments on highly charged ions at extremely low energy will become possible by the HITRAP facility which is currently being built up at GSI. Also the future Facility for Antiproton and Ion Research (FAIR) will be briefly described which is expected to be operational by 2014.

show abstract

“…9,10 The above measurements have been carried out at a storage ring, 7,8 and a common experimental obstacle has been the effect of the Doppler width and shift of the transition due to the relativistic velocities of the ions. The measurements, performed in an electron beam ion trap ͑EBIT͒, [4][5][6] are not subject to this effect as severely, but suffer from a low signal-to-noise ratio.…”

Section: Bimentioning

confidence: 99%

“…18 A second direct measurement aimed for the latter value, but no resonance within the predicted limits was found. 10 A definitive measurement is therefore very desirable.…”

Section: Bimentioning

confidence: 99%

Proposed precision laser spectrometer for trapped, highly charged ions

Vogel

Winters

Segal

et al. 2005

Review of Scientific Instruments

View full text Add to dashboard Cite

We propose a type of precision laser spectrometer for trapped, highly charged ions nearly at rest. It consists of a cylindrical, open-endcap Penning trap in which an externally produced bunch of highly charged ions can be confined and investigated by means of laser spectroscopy. The combination of confinement, cooling, and compression of a dense ion cloud will allow the ground-state hyperfine splitting in highly charged ions to be measured with an accuracy three orders of magnitude better than in any previous experiment. A systematic study of different charge states and different isotopes of the same element allows for highly sensitive tests of bound-state quantum electrodynamics and for a precision determination of nuclear properties. Apart from stable isotopes, radioactive species with half-lives longer than about 1 hour also can be investigated.

show abstract

Untitled

Cited by 20 publications

References 17 publications

Precision laser spectroscopy without optical detection

Precision laser spectroscopy without optical detection

Atomic physics experiments with trapped and cooled highly charged ions

Proposed precision laser spectrometer for trapped, highly charged ions

Contact Info

Product

Resources

About