On-line separation of short-lived nuclei by a multi-reflection time-of-flight device

R.N. Wolf , D. Beck , K. Blaum , C. Böhm , C. Borgmann , M. Breitenfeldt , F. Herfurth , A. Herlert , M. Kowalska , S. Kreim , D. Lunney (1) , S. Naimi (1) , D. Neidherr , M. Rosenbusch , L. Schweikhard , J. Stanja , F. Wienholtz , K. Zuber

1 CSNSM SNO

A multi-reflection time-of-flight (MR-ToF) mass analyzer has been integrated into ISOLTRAP, the precision mass spectrometer for on-line mass determinations of short-lived nuclides at ISOLDE/CERN. The new instrument improves ISOLTRAP by providing a fast separation of isobaric contaminant species as well as subsequent ion selection using the fast Bradbury-Nielsen gate. Suppression ratios of up to 104 and mass-resolving powers of over 105 have been reached in off-line experiments. Preliminary data of on-line applications illustrate the benefit and performance of the device and its potential in the context of the ISOLTRAP setup.

Mots clés: MR-ToF mass separator; Isobar purification; RIB; ISOLTRAP; Penning trap; Mass spectrometer; HIGH-PRECISION; IONS; RESOLUTION; NUCLIDES; ISOTOPES; SYSTEM; ACCURACY MASS-SPECTROMETRY; CYLINDRICAL PENNING TRAP; BEAM PURIFICATION

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

R.N. Wolf, D. Beck, K. Blaum, C. Böhm, C. Borgmann, et al.. On-line separation of short-lived nuclei by a multi-reflection time-of-flight device. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2012, 686, pp.82-90. ⟨10.1016/j.nima.2012.05.067⟩. ⟨in2p3-00703242⟩