Table 2 Measured values and comparisons for transition energies differences

From: Testing quantum electrodynamics in extreme fields using helium-like uranium

Study

He–Li

He–Be

Be–Li

Reference

This work

50.233 ± 0.046

8.175 ± 0.042

42.072 ± 0.046

 

Past experiment

50.34 ± 0.96

  

Ref. 30

   

42.35 ± 0.42

Ref. 36

Theory

49.911 ± 0.138

7.863 ± 0.080

42.048 ± 0.153

MCDF

 

50.311 ± 0.039

8.106 ± 0.043

42.205 ± 0.039

Ref. 12

 

50.30 ± 0.03

  

Ref. 30

  1. Comparison of the measured intrashell transition energy differences with the most recent theoretical predictions. MCDF indicates the multi-configuration Dirac–Fock prediction. All values are in eV. Uncertainties correspond to ±1 standard deviation.
Back to article page