Hideyuki SAKAI (RIKEN)
September 29(Thu) - September 29(Thu), 2022
17:00 KST
Zoom
This is a C2R2 seminar (Zoom link to be updated).
Abstract
New superheavy element (SHE) research project was begun in 2016 at RNC, aiming to synthesize a new superheavy element Z=119 in a hot fusion reaction, 51V + 248Cm. The project included constructing a gas-filled recoil ion separator (GARIS-III) suitable for detecting hotfusion reaction residues. RILAC was upgraded by completing a superconducting linac (SRILAC) and a new superconducting electron cyclotron resonance ion source (SC-ECRIS) to boost the final beam energy and its intensity.
Commissioning of SRILAC finished in 2019 confirmed a 51V beam accelerated up to 6.5 MeV/u that makes a hot fusion reaction of 51V + 248Cm possible to synthesize a new element 119 in terms of bombarding energy.
After the commissioning, the new SHE search experiment started under an international collaboration called the nSHE (“n" could stand for “n"ew, “n"ishina, or “n"ihon.) Research Group. The experiment is steadily going on.
In this talk, we present the upgrade project of SRILAC and GARIS-III, their commissioning, and the present status of the new element Z=119 search experiment at RIKEN.