0000000000273433
AUTHOR
L. Standylo
Experimental activities with the LPSC charge breeder in the European context
WEOBMH01; International audience; One of the Work Packages of the "Enhanced Multi-Ionization of short-Lived Isotopes at EURISOL"NuPNET project focuses on the ECR charge breeding.The LPSC charge breeder is used for experimental studiesin order to better understand the fundamental processesinvolved in the 1+ beam capture by a 14 GHz ECRplasma. Some improvements, like symmetrisation of themagnetic field at the injection side and higher pumpingspeed, have been carried out on the PHOENIX chargebreeder. The impact of these modifications on theefficiencies and charge breeding times are presented. Inthe same time, the new LPSC 1+ source developmentsperformed in order to ease the efficiency measurem…
Ionization efficiency studies with charge breeder and conventional electron cyclotron resonance ion source
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 …
Injected 1+ ion beam as a diagnostics tool of charge breeder ECR ion source plasmas
International audience; Charge breeder electron cyclotron resonance ion sources (CB-ECRIS) are used as 1+ →n+ charge multiplication devices of post-accelerated radioactive ion beams. The charge breeding process involves thermalization of the injected 1+ ions with the plasma ions in ion–ion collisions, subsequent ionization by electron impact and extraction of the n+ ions. Charge breeding experiments of 85Rb and 133Cs ion beams with the 14.5 GHz PHOENIX CB-ECRIS operating with oxygen gas demonstrate the plasma diagnostics capabilities of the 1+ injection method. Two populations can be distinguished in the m/q-spectrum of the extracted ion beams, the low (1+ and 2+) charge states repres…