title: Ionization efficiency studies with charge breeder and conventional electron cyclotron resonance ion source.
abstract: Radioactive Ion Beams play an increasingly important role in several European research facility programs such as SPES, SPIRAL1 Upgrade, and SPIRAL2, but even more for those such as EURISOL. Although remarkable advances of ECRIS charge breeders (CBs) have been achieved, further studies are needed to gain insight on the physics of the charge breeding process. The fundamental plasma processes of charge breeders are studied in the frame of the European collaboration project, EMILIE, for optimizing the charge breeding. Important information on the charge breeding can be obtained by conducting similar experiments using the gas mixing and 2-frequency heating techniques with a conventional JYFL 14 GHz ECRIS and the LPSC-PHOENIX charge breeder. The first experiments were carried out with noble gases and they revealed, for example, that the effects of the gas mixing and 2-frequency heating on the production of high charge states appear to be additive for the conventional ECRIS. The results also indicate that at least in the case of noble gases the differences between the conventional ECRIS and the charge breeder cause only minor impact on the production efficiency of ion beams.
authors.affiliation: Department of Physics, University of Jyväskylä (JYFL), Jyväskylä, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Koivisto
authors.affiliation: Department of Physics, University of Jyväskylä (JYFL), Jyväskylä, Finland.
authors.forename: O
authors.initials: O
authors.lastname: Tarvainen
authors.affiliation: Department of Physics, University of Jyväskylä (JYFL), Jyväskylä, Finland.
authors.forename: V
authors.initials: V
authors.lastname: Toivanen
authors.affiliation: Department of Physics, University of Jyväskylä (JYFL), Jyväskylä, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Komppula
authors.affiliation: Department of Physics, University of Jyväskylä (JYFL), Jyväskylä, Finland.
authors.forename: R
authors.initials: R
authors.lastname: Kronholm
authors.affiliation: LPSC, Université Joseph Fourier Grenoble 1, Grenoble INP, 53 rue des martyrs, 38026 Grenoble Cedex, France.
authors.forename: T
authors.initials: T
authors.lastname: Lamy
authors.affiliation: LPSC, Université Joseph Fourier Grenoble 1, Grenoble INP, 53 rue des martyrs, 38026 Grenoble Cedex, France.
authors.forename: J
authors.initials: J
authors.lastname: Angot
authors.affiliation: GANIL, CEA/DSM-CNRS/IN2P3, Caen Cedex 05, France.
authors.forename: P
authors.initials: P
authors.lastname: Delahaye
authors.affiliation: GANIL, CEA/DSM-CNRS/IN2P3, Caen Cedex 05, France.
authors.forename: L
authors.initials: L
authors.lastname: Maunoury
authors.affiliation: INFN-Laboratori Nazionali di Legnaro, Legnaro, Padova, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Galata
authors.affiliation: INFN-Laboratori Nazionali del Sud, Catania, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Patti
authors.affiliation: Heavy Ion Laboratory, University of Warsaw, Warsaw, Poland.
authors.forename: L
authors.initials: L
authors.lastname: Standylo
authors.affiliation: Heavy Ion Laboratory, University of Warsaw, Warsaw, Poland.
authors.forename: O
authors.initials: O
authors.lastname: Steczkiewicz
authors.affiliation: Heavy Ion Laboratory, University of Warsaw, Warsaw, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Choinski