Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2010 Nov 19;105(21):213002. doi: 10.1103/PhysRevLett.105.213002. Epub 2010 Nov 16.
Centrifugal separation of antiprotons and electrons is observed, the first such demonstration with particles that cannot be laser cooled or optically imaged. The spatial separation takes place during the electron cooling of trapped antiprotons, the only method available to produce cryogenic antiprotons for precision tests of fundamental symmetries and for cold antihydrogen studies. The centrifugal separation suggests a new approach for isolating low energy antiprotons and for producing a controlled mixture of antiprotons and electrons.
反质子和电子的离心分离得到了观察，这是首次对无法进行激光冷却或光学成像的粒子进行此类演示。在囚禁反质子的电子冷却过程中发生了空间分离，这是为了进行基本对称性的精确测试和冷反氢研究而产生低温反质子的唯一方法。离心分离为隔离低能反质子和产生受控的反质子和电子混合物提供了一种新方法。
