title: Production of U beam from RIKEN 18 GHz electron cyclotron resonance ion source.
abstract: For the RIKEN radio isotope factory (RIBF) project, we produced the multicharged uranium beam with two methods. To produce lower charge state U ion beams (14+-20+) we used the UF(6) gas as an ionized gas. The typical beam intensity of U(14+-20+) was 2-1 particle microA at the extraction voltage of 14 kV. To produce higher charge state U ion beam (U(35+)), we chose the sputtering method. The beam intensity was 70 particle nA at the extraction voltage of 5.4 kV. Using this method, we successfully produced multicharged U beam continuously for one month without break for RIBF commissioning.
authors.affiliation: Nishina Center, RIKEN, Wako, Saitama, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Higurashi
authors.forename: T
authors.initials: T
authors.lastname: Nakagawa
authors.forename: M
authors.initials: M
authors.lastname: Kidera
authors.forename: H
authors.initials: H
authors.lastname: Haba
authors.forename: T
authors.initials: T
authors.lastname: Aihara
authors.forename: M
authors.initials: M
authors.lastname: Kase
authors.forename: A
authors.initials: A
authors.lastname: Goto
authors.forename: Y
authors.initials: Y
authors.lastname: Yano