World’s first electron scattering off online-produced radioactive isotope
by
26/1-022
CERN
After long-term development, we successfully conducted the world's first electron scattering off an online-produced radioactive isotope at the SCRIT electron-scattering facility of RIKEN RI Beam Factory (PRL. 131 (2023) 092502, Physics Today 76 (11), 14–16 (2023)).
The SCRIT facility is designed to explore the internal structures of short-lived exotic nuclei by never-yet-performed electron scattering. This pioneering facility employs a novel ion-trapping technique, SCRIT (Self-Confining Radioactive Isotope Ion Target), to prepare a production-hard short-lived exotic nuclei target for electron scattering.
Using only ~107 ions of an exotic nucleus, the SCRIT target technique enables us to achieve a luminosity of approximately 1027/cm2/s, the minimum required for realizing elastic electron scattering for medium-heavy nuclei.
In my presentation, I will discuss the experimental results and the current status of the SCRIT facility in detail, and I would like to discuss many research possibilities at the SCRIT facility.
If time allows, I would like also to provide an overview of the ongoing low-energy electron scattering project, ULQ2 (Ultra-Low Q2), which realizes the lowest-ever beam-energy electron scattering off proton, Ee = 10 - 50 MeV, to determine the proton charge radius.