Experimental tests of QED in bound and isolated systems – Lesson 1
Lucile Julien · 2012
Hänsch's Nobel conference) Nobel Prize 2005 half awarded jointly to J. L. Hall and T.W. Hänsch Absolute frequency measurement of the 1S-2S hydrogen transition ( IV ) Recent improvements of the experiment frequency measurement with an accuracy of 4.2 x 10 -15 f (1S-2S) = 2 466 061 413 187 035 (10) Hz -improved laser stability -better control of systematic effects (2 nd order Doppler, ac and dc Stark shifts)