Development of a high resolution isobar separator for study of exotic decays

Piechaczek, A.; Shchepunov, V.A.; Carter, H.K.; Batchelder, J. C.; Zganjar, E. F.; Liddick, S. N.; Wöllnik, H.; Hu, Yuan; Griffith, B.O.

doi:10.1016/j.nimb.2008.05.149

Cited by 38 publications

(14 citation statements)

References 7 publications

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“…For this purpose, a second isobar-purification system was developed and installed in 2010 at ISOLTRAP. It is based on a multi-reflection time-of-flight (MR-ToF) technique [19][20][21][22][23][24][25] in combination with a fast Bradbury-Nielsen gate (BNG) [26,27] and provides a significantly faster purification without degradation in effectiveness. The system can be used either as an auxiliary device for contamination removal in combination with the existing preparation Penning trap, an exclusive mass separator for very short-lived nuclides, or a fast mass spectrometer in its own right for very short-lived nuclides.…”

Section: Introductionmentioning

confidence: 99%

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

Wolf

Beck

Blaum

et al. 2012

Nuclear Instruments and Methods in Physics Research Section A:

129

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a b s t r a c tA 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 10 4 and mass-resolving powers of over 10 5 have been reached in off-line experiments. Preliminary data from on-line applications illustrate the benefit and performance of the device and its potential in the context of the ISOLTRAP setup.

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Section: Introductionmentioning

confidence: 99%

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

Wolf

Beck

Blaum

et al. 2012

Nuclear Instruments and Methods in Physics Research Section A:

129

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“…Offline experiments have been performed at Oak Ridge [22] and spectra of short-lived nuclides (with already known mass values) were taken at RIKEN [13] and at GSI [14]. Beyond these…”

Section: Mr-tof Studies At Isoltrapmentioning

confidence: 99%

Isobar separation and precision mass spectrometry of short-lived nuclides with a multi- reflection time-of-flight analyzer

Schweikhard

2014

Proceedings of 10th Latin American Symposium on Nuclear Physics and Applications — PoS(X LASNPA)

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Multi-Reflection Time-of-Flight Mass Spectrometry (MR-ToF MS) is a technique that hasrecently been introduced to nuclear physics research. The method is reviewed and several examples from ISOLTRAP at ISOLDE/CERN are given that illustrate its power and usefulness. Initially built for fast separation of the ions of interest from abundant contaminations in order to allow precision mass spectrometry, which was demonstrated in the case of 82 Zn, ISOLTRAP's multi-reflection time-of-flight mass spectrometer also succeeded in measuring the previously unknown mass values of 53 Ca and 54 Ca. In addition, proof-of-principle experiments have been performed which demonstrate further applications where fast and high-resolution separation of ions of interest from mixtures with high abundances of contamination species is required. Furthermore, in an off-line setup MR-ToF MS is explored with respect to space-charge effects in order to find the limits of the ion abundances that can be handled. The phenomena observed include peak coalescence in the time-of-flight spectra and different distributions of the kinetic energies of the stored ion species.

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“…Plaß et al [1] reviewed the MRTOF-MS developments for the research with short-lived nuclei and different instrumental implementations. Up to now, many MRTOF-MSs for mass measurements and isobaric separations have been commissioned [2][3][4][5][6] or under construction [7][8][9][10][11]. Many good results have been achieved, as examples, the masses of 82 Zn [12], 53,54 Ca [13] and 52,53 K [14] have been measured by using MRTOF-MS at ISOLDE/CERN and the masses of heavy nuclides produced by fusion-evaporation reactions at GARIS-II/RIKEN [15].…”

Section: Introductionmentioning

confidence: 99%

Optimization of multi-reflection time-of-flight mass analyzer operating in in-trap-lift mode

Huang

Tian

Wang

et al. 2017

Radiat Detect Technol Methods

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Purpose We are building an MRTOF-MS (multi-reflection time-of-flight mass spectrometer) for isobaric separation for the Lanzhou Penning Trap. The potentials applied on the electrodes of our MRTOF mass analyzer operating in in-trap-lift mode have to be optimized to achieve a very high mass resolving power. Methods Our method to design and optimize an MRTOF mass analyzer has been updated to introduce constraints on the potentials, and this method now can be used to optimize the parameters of MRTOF-MS both operating in mirror-switching mode and in in-trap-lift mode. By using this method, the optimal potential parameters of the electrodes have been obtained for our MRTOF mass analyzer operating in the in-trap-lift mode. Results and conclusion With a beam size of 2.8 mm diameter and an initial average ion kinetic energy of 1500 eV, the maximal mass resolving power has been achieved to be 3.2 × 10 4 with a total TOF of 7.0 ms for an ion species of 40 Ar 1+ . It can reach up to 5.6 × 10 4 for a beam size of 0.3 mm diameter. The simulation shows that the inaccuracy of the potentials applied on the outermost mirror electrodes M1-M2 must be less than 50 ppm or preferably 20 ppm.

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Development of a high resolution isobar separator for study of exotic decays

Cited by 38 publications

References 7 publications

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

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

Isobar separation and precision mass spectrometry of short-lived nuclides with a multi- reflection time-of-flight analyzer

Optimization of multi-reflection time-of-flight mass analyzer operating in in-trap-lift mode

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