Eur. Phys. J. A (2005) 25: 729-731
https://doi.org/10.1140/epjad/i2005-06-199-4

ENAM 2004

ISOL beams of neutron-rich oxygen isotopes

¹ ISOLDE, CERN, CH-1211, Genève 23, Switzerland
² Institut für Kernchemie, Universität Mainz, D-55128, Mainz, Germany
³ GANIL, IN2P3-CNRS/DSM-CEA, B.P. 55027, F-14076, Caen Cedex 5, France
⁴ Institut de Physique Nucléaire d’Orsay, F-91406, Orsay Cedex, France
⁵ Physics Division, Argonne National Laboratory, IL 60439, USA
⁶ NSCL, Michigan State University, MI 48824, East Lansing, USA

^* e-mail: Ulli.Koster@cern.ch

Received: 15 January 2005
Accepted: 28 April 2005
Published online: 9 August 2005

Abstract

ISOL beams of ^19-22O were produced at ISOLDE and GANIL. At ISOLDE the neutron-rich oxygen isotopes are produced by 1.4 GeV proton-induced reactions in a UC_x/graphite target. The target is connected via a water-cooled transfer line (to retain all non-volatile isobars) to an ISOLDE type FEBIAD ion source where the released CO is dominantly ionized as CO⁺. ^19-22O beams were also produced at SPIRAL (GANIL). A 77.5 MeV/nucleon ³⁶S beam was fragmented in a thick graphite target, coupled by a cold transfer tube to an ECR ion source which ionizes the released CO dominantly as O⁺ and CO⁺.