Measurements of the 1s2s 1S0-1s2p 3P1,0 transitions in heliumlike nitrogen
Abstract
Using a Doppler-tuned fast ion-beam-laser technique, with co- and counterpropagating laser beams, the intercombination 1s2s 1S0-1s2p 3P1,F transitions in 14N5+ and 15N5+ have been measured to 0.7 ppm. This precision is equivalent to 20 ppm of the two-electron Lamb shift and is more than two orders of magnitude more precise than current relativistic and QED theoretical results at this Z. A comparison is made with theory for the hyperfine structure and isotope shift. Additionally, using a single copropagating laser beam, the differences between the 2 1S0-2 3P1,F=1 and 2 1S0-2 3P0 intervals in 14N5+ and between the 2 1S0-2 3P1,F=3/2 and 2 1S0-2 3P0 intervals in 15N5+ have also been measured. From the former we obtain an improved result for the 14N5+ 2 3P1-2 3P0 fine structure.
- Publication:
-
Physical Review A
- Pub Date:
- January 1998
- DOI:
- 10.1103/PhysRevA.57.180
- Bibcode:
- 1998PhRvA..57..180T
- Keywords:
-
- 32.30.Rj;
- 31.30.Jv;
- 31.30.Gs;
- 32.30.Bv;
- X-ray spectra;
- Relativistic and quantum electrodynamic effects in atoms and molecules;
- Hyperfine interactions and isotope effects Jahn-Teller effect;
- Radio-frequency microwave and infrared spectra