First radioactive ions charge bred in REXEBIS at the REX-ISOLDE accelerator

Wolf, B.; Cederkäll, J.; Forstner, O.; Wenander, F.; Ames, F.; Reisinger, K.; Liljeby, L.; Skeppstedt, Ö.; Jonson, B.; Nyman, G.

doi:10.1016/s0168-583x(02)02108-0

Cited by 31 publications

(18 citation statements)

References 5 publications

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“…Element-selective ionisation takes place with the Resonance Laser Ionisation Laser Ion Source (RILIS) [14,36,37] and the Mn 1+ ions are extracted from the ion source with a 30 kV potential and mass separated with the General Purpose Separator (GPS). After this the beam is bunched in REX-TRAP [38,39] and released into the charge breeder, REX-EBIS [38,39], finally attaining a charge state of 21 + . The latter stage is required in order to achieve a mass to charge ratio of A/q < 4.5 for injection to the REX linear accelerator [40].…”

Section: Methodsmentioning

confidence: 99%

Low-energy Coulomb excitation of 62Fe and 62Mn following in-beam decay of 62Mn

et al. 2015

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Abstract. Sub-barrier Coulomb-excitation was performed on a mixed beam of 62 Mn and 62 Fe, following in-trap β − decay of 62 Mn at REX-ISOLDE, CERN. The trapping and charge breeding times were varied in order to alter the composition of the beam, which was measured by means of an ionisation chamber at the zero-angle position of the Miniball array. A new transition was observed at 418 keV, which has been tentatively associated to a (2 + , 3transition. This fixes the relative positions of the β-decaying 4 + and 1 + states in 62 Mn for the first time. Population of the 2

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Section: Methodsmentioning

confidence: 99%

Low-energy Coulomb excitation of 62Fe and 62Mn following in-beam decay of 62Mn

et al. 2015

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“…The cooling in REX-TRAP is mass dependent and potentially some additional mass selectivity can be achieved in REXTRAP, in order to purify the radioactive beam from stable isobaric contaminants [52]. Secondly, the accumulated and cooled isotopes are transmitted to the REX Electron Beam Ion Source (REXEBIS) [53][54][55] in a short time period of some 10 μs. The isotopes spend the same period in the REXE-BIS charge breeder.…”

Section: Specific Timing At Isoldementioning

confidence: 99%

The Miniball spectrometer

et al. 2013

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Abstract. The Miniball germanium detector array has been operational at the REX (Radioactive ion beam EXperiment) post accelerator at the Isotope Separator On-Line facility ISOLDE at CERN since 2001. During the last decade, a series of successful Coulomb excitation and transfer reaction studies have been performed with this array, utilizing the unique and high-quality radioactive ion beams which are available at ISOLDE. In this article, an overview is given of the technical details of the full Miniball setup, including a description of the γ-ray and particle detectors, beam monitoring devices and methods to deal with beam contamination. The specific timing properties of the REX-ISOLDE facility are highlighted to indicate the sensitivity that can be achieved with the full Miniball setup. The article is finalized with a summary of some physics highlights at REX-ISOLDE and the utilization of the Miniball germanium detectors at other facilities.

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“…The best attained efficiency result for the REXEBIS (including beam transport from trap to EBIS, EBIS injection-breeding-extraction, and a mass separator efficiency of 80%) is >10% for potassium breeding. The average efficiency over the whole range Li to Cs is between 5 and 10% [17], and for higher intensities the efficiency can drop to as low as 2%. To this value the trap efficiency of ~40% should be included.…”

Section: Breeding Efficiencymentioning

confidence: 98%

Charge breeding techniques

Wenander

2004

Nuclear Physics A

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The numerous newly built and forthcoming post-accelerators for radioactive ions, produced with the isotope separator on-line (ISOL) technique, all have a need for an efficient method to accelerate the precious primary ions. By increasing the ion charge-tomass ratio directly after the radioactive ion production stage, a short and compact linear accelerator can be employed. Not only the efficiency, but also the rapidity of such a charge-to-mass increasing process, called charge breeding, is a crucial factor for the often short-lived radioisotopes.The traditional foil or gas stripping technique was challenged some five to ten years ago by novel schemes for charge breeding. The transformation from 1 + to n + charged ions takes place inside an Electron Beam Ion Source/Trap (EBIS/T) or Electron Cyclotron Resonance Ion Source/Trap (ECRIS/T) by electron-ion collisions. These charge breeders are located in the low-energy part of the machine before the accelerating structures. Because of the capability of these devices to produce highly charged ions, mass-to-charge ratios between 4 and 9 are easily obtained.In this article the performance and the features of the above listed charge breeding concepts will be compared and discussed. An outlook on charge breeders for the next generation of radioactive ion beam facilities is also given.

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First radioactive ions charge bred in REXEBIS at the REX-ISOLDE accelerator

Cited by 31 publications

References 5 publications

Low-energy Coulomb excitation of 62Fe and 62Mn following in-beam decay of 62Mn

Low-energy Coulomb excitation of 62Fe and 62Mn following in-beam decay of 62Mn

The Miniball spectrometer

Charge breeding techniques

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