ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
ISOL–MAFIOS is a high-efficiency Min B ECRIS charge state breeder for short-lived ISOL beams in the PIAFE project. The ISOL species issuing from a bombarded target are locally ionized (1+) in a given ion source (ISOLDE type). They are then accelerated, magnetically selected, and transported in a long beam line, before being adequately introduced into ISOL–MAFIOS operating in continuous mode. In this system, an ECR plasma (created with a support gas) replaces the usual solid catcher. The ISOL–MAFIOS system captures the (1+) ions and transforms them into (q+) ions. If we call, overall efficiency of ISOL–MAFIOS the ratio of the beam intensities: I(q+) after the magnetic selector/I(1+) before entering in the source, we find for example for Rubidium IRb9+/IRb1+≈120 enA/1000 enA and a ratio at least two times larger for IKr9+/IKr1+. Moreover, an even more important result of ISOL–MAFIOS is that the release time+ionization time is of the order of 10−2 s instead of many seconds for a solid-state catcher. Thus in the PIAFE project isotopes whose half life times are (approximately-greater-than)10−2 s become utilizable for acceleration in the two-cyclotron SARA. Note that in the PIAFE project the (1+) ISOL ions are produced by neutron bombardment of a U target inside the high flux reactor ILL and not by the bombardment of a target by a primary ion beam. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1146649
