Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany.
Phys Rev Lett. 2010 Jun 11;104(23):233001. doi: 10.1103/PhysRevLett.104.233001. Epub 2010 Jun 7.
Measuring the hydrogen-deuterium isotope shift via two-photon spectroscopy of the 1S-2S transition, we obtain 670,994,334,606(15) Hz. This is a 10-times improvement over the previous best measurement [A. Huber, Phys. Rev. Lett. 80, 468 (1998)] confirming its frequency value. A calculation of the difference of the mean square charge radii of deuterium and hydrogen results in
我们通过 1S-2S 跃迁的双光子光谱测量得到氢氘同位素位移为 670,994,334,606(15) Hz。这比之前的最佳测量值[A. Huber, Phys. Rev. Lett. 80, 468 (1998)]提高了 10 倍，证实了其频率值。对氘和氢的平均电荷半径平方差的计算得出
