Electron scattering based on a novel internal target technique:SCRIT

摘要

A novel technique for forming internal targets, named SCRIT (Self-Confining RI Ion Target), has been developed, which can make electron scattering off short-lived radioactive nuclei possible in an electron storage ring. SCRIT confines the ions of interest by utilizing the “ion trapping” phenomenon in the electron storage ring. Approximately 107 stable ~(133)Cs ions were trapped in a three-dimensional configuration along the electron beam axis at an electron beam current of 75 mA. The angular distribution of the electrons scattered from the trapped ~(133)Cs ions was successfully measured, and a collision luminosity of 10~(26)/(cm~2 s) was achieved.