CODATA 2018

Dirac’s Theory

Dirac’s Theory + Lamb Energy

n

Level

Experiment/eV

Value/eV

Difference/eV

Value/eV

Difference/eV

1

1s 1/2

0

−0.000033696

−3.37E−05

0.000000313

3.13E−07

2

2s 1/2

10.198810525148

10.198806211

−4.31E−06

10.198810554

2.91E−08

3

3s 1/2

12.087494961100

12.087493678

−1.28E−06

12.087494967

6.37E−09

4

4s 1/2

12.748532996630

12.748532453

−5.44E−07

12.748532997

3.44E−10

5

5s 1/2

13.054498464000

13.054498185

−2.79E−07

13.054498464

−1.97E−10