Heiße F, Köhler-Langes F, Rau S, Hou J, Junck S, Kracke A, Mooser A, Quint W, Ulmer S, Werth G, Blaum K, Sturm S
Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany.
Phys Rev Lett. 2017 Jul 21;119(3):033001. doi: 10.1103/PhysRevLett.119.033001. Epub 2017 Jul 18.
We report on the precise measurement of the atomic mass of a single proton with a purpose-built Penning-trap system. With a precision of 32 parts per trillion our result not only improves on the current CODATA literature value by a factor of 3, but also disagrees with it at a level of about 3 standard deviations.
我们报告了利用专门构建的彭宁阱系统对单个质子原子质量进行的精确测量。我们的结果精度达到万亿分之32，不仅比当前CODATA文献值提高了3倍，而且在约3个标准差的水平上与之存在差异。
