Production cross section measurements and New isotope searchs by BigRIPS separator at RIKEN RI Beam Factory (RIBF Nuclear Physics Seminar)
by
DrHiroshi Suzuki(RNC BigRIPS)
→
Asia/Tokyo
RIBF Bldg. 2F Coference room (RIKEN Wako)
RIBF Bldg. 2F Coference room
RIKEN Wako
Description
Dr. Hiroshi Suzuki, Nishina center
Date: January 28 (Tuesday) 13:30 -
Place: RIBF Hall, RIKEN
The measurement of production cross sections of radioactive isotopes (RI) is important for designing RI-beam experiments, allowing accurate estimation of the RI-beam intensities. Since the commissioning of the RIKEN RI Beam Factory (RIBF)
in 2007, a variety of RI beams have been produced by using the large-acceptance superconducting in-flight separator
BigRIPS.
We have measured the production rates and production cross sections of the RIs, which were produced by projectile fragmentation of heavy-ion beams such as 48Ca, 70Zn, and 124Xe at 345 MeV/u, and by in-flight fission of a 238U beam at the same energy.
The measured cross sections were compared with the EPAX2 and EPAX3 model in case of the projectile fragmentation and with
the LISE++ fission models in case of the in-flight fission. The reproducibility of these models were also discussed.
Futhermore, in the measurements with the 124Xe beam, we have discovered four new isotopes on the proton-drip line. The measurements of projectile-fragment momentum distributions have been also performed with the 124Xe beam, in which the
low-momentum tails of the distributions have been measuremd for the first time at 345 MeV/u.
