title: Low charge state heavy ion production with sub-nanosecond laser.
abstract: We have investigated laser ablation plasma of various species using nanosecond and sub-nanosecond lasers for both high and low charge state ion productions. We found that with sub-nanosecond laser, the generated plasma has a long tail which has low charge state ions determined by an electrostatic ion analyzer even under the laser irradiation condition for highly charged ion production. This can be caused by insufficient laser absorption in plasma plume. This property might be suitable for low charge state ion production. We used a nanosecond laser and a sub-nanosecond laser for low charge state ion production to investigate the difference of generated plasma using the Zirconium target.
authors.affiliation: Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: T
authors.initials: T
authors.lastname: Kanesue
authors.affiliation: Research Institute for Science and Engineering, Waseda University, Tokyo 169-8555, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kumaki
authors.affiliation: Nishina Center for Accelerator-Based Science, RIKEN, Saitama 351-0198, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ikeda
authors.affiliation: Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: M
authors.initials: M
authors.lastname: Okamura