Journal ArticleDOI
Mass-selective operation with REXTRAP
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TLDR
In this paper, the possibility of operating REXTRAP in a mass-resolving mode and injecting bunched beams from the recently installed radiofrequency quadrupole cooler and buncher ISCOOL has been studied in detail.Abstract:
At the radioactive ion-beam facility REX-ISOLDE more than 60 different types of radionuclide ions have been post-accelerated to energies up to 3.15 MeV/u within the last years. The transmission efficiency of the system has continually increased with gained operation experience. Apart from striving for the highest possible intensity, the beam purity is also of crucial importance for many experiments. For this reason isobaric contaminant suppression in the low energy stage of REX-ISOLDE has been investigated. Until now the Penning trap system REXTRAP was used solely as a device for bunching the incoming quasi-continuous radioactive ion-beam from ISOLDE and reducing the emittance for efficient injection into the REXEBIS charge breeder. The possibility of operating REXTRAP in a mass-resolving mode and injecting bunched beams from the recently installed radiofrequency quadrupole cooler and buncher ISCOOL has been studied in detail. Results related to transmission efficiency,achieved mass-resolving power, and limitations due to space-charge effects are presented.read more
Citations
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Journal ArticleDOI
Space-charge effects in Penning ion traps
T. Porobic,Marcus Beck,M. Breitenfeldt,C. Couratin,P. Finlay,A. Knecht,A. Knecht,X. Fabian,P. Friedag,X. Fléchard,E. Lienard,G. Ban,D. Zákoucký,G. Soti,S. Van Gorp,Ch. Weinheimer,E. Wursten,Nathal Severijns +17 more
TL;DR: In this article, the influence of space charge on ion cyclotron resonances and magnetron eigenfrequency in a gas-filled Penning ion trap has been investigated, and the helium buffer gas pressure in the Penning trap was determined by comparing experimental cooling rates with simulations.
Journal ArticleDOI
Electron binding energies from collisional activation of metal-cluster dianions
A. Herlert,Lutz Schweikhard +1 more
TL;DR: In this article, the binding energy of the surplus electron is deduced from the dianion yield observed as a function of the collision energy by use of a statistical model based on detailed balance.
Dissertation
Coulomb excitation of doubly-magic 132Sn at HIE-ISOLDE and development of escape-suppression shields for the MINIBALL spectrometer
TL;DR: In this article, the authors investigated the collective properties of the doubly-magic nucleus 132Sn, in particular the first excited 2+ and 3+ states, via safe Coulomb excitation.
Dissertation
Development of beam instrumentation for exotic particle beams
TL;DR: In this paper, a beam diagnostic system of the future superconducting linear accelerator at the High Intensity and Energy Isotope Separator On-Line Device (HIE-ISOLDE) is presented.
Journal ArticleDOI
Charge breeders: Development of diagnostic tools to probe the underlying physics.
TL;DR: In this article , two families of charge breeders have been developed: one based on ECRIS suitable for Continuous Wave (CW) operation and another built around Electron Beam Ion Sources (EBISs) used for pulsed post-accelerators.
References
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Journal ArticleDOI
Geonium theory: Physics of a single electron or ion in a Penning trap
Lowell S. Brown,Gerald Gabrielse +1 more
TL;DR: In this paper, the theory of a single charged particle in a Penning trap is reviewed, beginning with simple first-order orbits and progressively dealing with small corrections which must be considered owing to the experimental precision that is being achieved.
Journal ArticleDOI
High-accuracy mass spectrometry with stored ions
TL;DR: The mass of an atom, and its inherent connection with the atomic and nuclear binding energy is a fundamental property, a unique fingerprint of the atomic nucleus as mentioned in this paper, and the importance of its mass ranges from verification of nuclear models to a test of the Standard Model, in particular with regard to the weak interaction and the unitarity of the Cabibbo-Kobayashi-Maskawa quark mixing matrix.
Journal ArticleDOI
A new cooling technique for heavy ions in a Penning trap
G. Savard,St. Becker,G. Bollen,H.-J. Kluge,R.B. Moore,R.B. Moore,T. Otto,Lutz Schweikhard,H. Stolzenberg,U. Wiess +9 more
TL;DR: In this paper, a new cooling technique for heavy ions stored in a Penning trap was developed, where axial and cyclotron motions were cooled by buffer gas collisions, and the outward radial diffusion caused by the buffer gas was counteracted by an azimuthal quadrupole rf field.
Journal ArticleDOI
The ISOLDE facility
TL;DR: The CERN on-line isotope separator facility ISOLDE is a unique tool for studying problems in nuclear, atomic, surface and solid state physics, nuclear medicine and astrophysics as discussed by the authors.
Journal ArticleDOI
ISOLTRAP: An on-line Penning trap for mass spectrometry on short-lived nuclides
Manas Mukherjee,Dietrich Beck,Klaus Blaum,Georg Bollen,Jens Dilling,Sebastian George,F. Herfurth,Alexander Herlert,Alban Kellerbauer,H.-J. Kluge,Stefan Schwarz,Lutz Schweikhard,C. Yazidjian +12 more
TL;DR: ISOLTRAP as discussed by the authors is a Penning trap mass spectrometer for high-precision mass measurements on short-lived nuclides installed at the on-line isotope separator ISOLDE at CERN.