Relativistic corrections to the Zeeman effect in hydrogenlike atoms and positronium

Anthony, John M.; Sebastian, K. J.

doi:10.1103/physreva.49.192

Cited by 16 publications

(14 citation statements)

References 41 publications

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“…Higher order corrections and other modifications have been calculated by several researchers [331][332][333][334][335] but, apart from precision hyperfine interval measurements, this level of precision is not usually required to interpret experimental data.…”

Section: Ps In Electric and Magnetic Fieldsmentioning

confidence: 99%

Experimental progress in positronium laser physics

2018

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Abstract. The field of experimental positronium physics has advanced significantly in the last few decades, with new areas of research driven by the development of techniques for trapping and manipulating positrons using Surko-type buffer gas traps. Large numbers of positrons (typically ≥10 6 ) accumulated in such a device may be ejected all at once, so as to generate an intense pulse. Standard bunching techniques can produce pulses with ns (mm) temporal (spatial) beam profiles. These pulses can be converted into a dilute Ps gas in vacuum with densities on the order of 10 7 cm −3 which can be probed by standard ns pulsed laser systems. This allows for the efficient production of excited Ps states, including long-lived Rydberg states, which in turn facilitates numerous experimental programs, such as precision optical and microwave spectroscopy of Ps, the application of Stark deceleration methods to guide, decelerate and focus Rydberg Ps beams, and studies of the interactions of such beams with other atomic and molecular species. These methods are also applicable to antihydrogen production and spectroscopic studies of energy levels and resonances in positronium ions and molecules. A summary of recent progress in this area will be given, with the objective of providing an overview of the field as it currently exists, and a brief discussion of some future directions.

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Section: Ps In Electric and Magnetic Fieldsmentioning

confidence: 99%

Experimental progress in positronium laser physics

2018

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“…This technique can be extended to test relativistic theories, such as in Ref. [15], by resolving Larmor oscillations from individual coherences in the ground-state manifold. Such a measurement can be accomplished by using a stronger magnetic field (∼ 5 G) that is rapidly turned on after atoms are released from the MOT.…”

Section: Discussionmentioning

confidence: 99%

“…Although the measurement in this paper does not have sufficient precision to test these effects, we demonstrate a proof-of-principle measurement and discuss how our technique can be extended to test predictions discussed in Ref. [15].…”

Section: Motivationmentioning

confidence: 95%

“…These effects are incorporated into the quantities g J and g I as described in Ref. [15]. The corrections to g J and g I given in Ref.…”

Section: Motivationmentioning

confidence: 99%

“…The corrections to g J and g I given in Ref. [15] depend on the nuclear mass and spin (which differ among isotopes) so that measurements of atomic g-factor ratios between different isotopes constitute a sensitive test of specific aspects of quantum electrodynamics. Although the measurement in this paper does not have sufficient precision to test these effects, we demonstrate a proof-of-principle measurement and discuss how our technique can be extended to test predictions discussed in Ref.…”

Section: Motivationmentioning

confidence: 99%

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Precise determination of atomicg-factor ratios from a dual isotope magneto-optical trap

2011

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We demonstrate a technique, for carrying out precise measurements of atomic g-factor ratios, which relies on measurements of Larmor oscillations from coherences between magnetic sublevels in the ground states of 85 Rb and 87 Rb atoms confined in a dual isotope magneto-optical trap. We show that a measurement of g (87)F /g (85) F with a resolution of 0.69 parts per 10 6 is possible by recording the ratio of Larmor frequencies in the presence of a constant magnetic field. This represents the most precise single measurement of g (87)F /g (85) F without correcting for systematic effects.

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Measurement of the Ratio between g‐Factors of the Ground States of 87Rb and 85Rb

et al. 2018

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The ratio between the Landé g-factors of the 87 Rb F = 2 and 85 Rb F = 3 ground-state hyperfine levels is experimentally measured to be g F (87)/g F (85) = 1.4988586(1), consistent with previous measurements. The g-factor ratio is determined by comparing the Larmor frequencies of overlapping ensembles of 87 Rb and 85 Rb atoms contained within an evacuated, antirelaxation-coated vapor cell. The atomic spins are polarized via synchronous optical pumping and the Larmor frequencies are measured by off-resonant probing using optical rotation of linearly polarized light. The accuracy of this measurement of g F (87)/g F (85) exceeds that of previous measurements by a factor of ≈50 and is sensitive to effects related to quantum electrodynamics.

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Relativistic corrections to the Zeeman effect in hydrogenlike atoms and positronium

Cited by 16 publications

References 41 publications

Experimental progress in positronium laser physics

Experimental progress in positronium laser physics

Precise determination of atomicg-factor ratios from a dual isotope magneto-optical trap

Measurement of the Ratio between g‐Factors of the Ground States of 87Rb and 85Rb

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