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

Schweikhard, L.

doi:10.22323/1.194.0011

Cited by 3 publications

(2 citation statements)

References 47 publications

(64 reference statements)

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“…Beyond MIRACLS, fluorescence detection offers additional opportunities to probe and understand the ion dynamics in EIBT devices when used as multi-reflection time-of-flight (MR-ToF) mass separators. Here, the so-called "peak coalescence" [20,36] instead of ion separation in time-of-flight can pose a major challenge. The extension of the present studies can help to advance the technology of MR-ToF mass separation for larger ion samples, which will be beneficial with respect to delivering contamination-free radioactive ion beams to experiments.…”

Section: Discussionmentioning

confidence: 99%

Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps

et al. 2019

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In the development towards the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS), an optical detection region for the observation of fluorescent light is added to an electrostatic ion beam trap (EIBT). In addition to its use for highly sensitive collinear laser spectroscopy, this fluorescence detection is introduced as a diagnostics tool for the study of the ion dynamics inside an EIBT. First measurements of collision-induced fluorescence in an EIBT demonstrate the technique's diagnostics power by tracking the evolution of an ion bunch's temporal width over its storage time inside the ion trap. Thereby, the time-focus point of the ion bunch can be determined and the influence of space-charge effects in the EIBT can be investigated. Good qualitative agreement is obtained between the measured trend of temporal widths and the simulations of the ions' trajectories in the trap. Particularly, the observation of self-bunching on the ion-bunch structure for many simultaneously stored ions is reproduced.

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Section: Discussionmentioning

confidence: 99%

Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps

et al. 2019

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“…This allows one to approach the natural line widths, as the Doppler line-width of the atomic transition δ f scales with the ion-beam energy as δ f ∝ δ E / √ E, where δ E represents the ions' energy spread [21]. In the current, first stage of the project, a proof-of-principle (PoP) setup has been assembled by adapting a low-energy MR-ToF device [22][23][24] for preliminary CLS tests. This PoP setup will be utilized to experimentally demonstrate the MIRACLS concept, further develop the technique, and benchmark simulations [25] that are employed to design the future 30-keV apparatus.…”

Section: Introductionmentioning

confidence: 99%

First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy

Sels

Fischer

Heylen

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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Collinear laser spectroscopy (CLS) has been combined with the multi-reflection time-of-flight (MR-ToF) technique. To this end, a photodetection system has been implemented at the drift region of a MR-ToF apparatus and a laser beam has been sent along the path of the ions that are stored between the two ion-optical mirrors. The main goal of the present proof-of-principle (PoP) experiments, is the confirmation of the expected increase in sensitivity compared to conventional fluorescence-based CLS due to the repeated probing of the trapped ion bunches. The novel method will be used for the precise measurement of nuclear ground-and isomeric-state properties of exotic nuclei with low production yields at radioactive ion-beam facilities. A significant sensitivity improvement of CLS is expected, depending on the half-life and mass of the nuclide of interest. The status of the PoP setup and future improvements are discussed.

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Simulations of a proof-of-principle experiment for collinear laser spectroscopy within a multi-reflection time-of-flight device

et al. 2019

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For nearly four decades Collinear Laser Spectroscopy (CLS) has been employed to determine ground-state properties of short-lived radionuclides. To extend its reach to the most exotic radionuclides with very low production yields, the novel Multi Ion Reflection Apparatus for CLS (MIRACLS) is currently under development at ISOLDE/CERN. In this setup, 30-keV ion bunches will be trapped between two electrostatic mirrors of a multi-reflection time-of-flight (MR-ToF) device such that the laser beam will probe the ions during each revolution. Thus, the observation time will be extended and the experimental sensitivity will be increased significantly while maintaining the high resolution of conventional CLS. A proof-of-principle experiment is currently being performed to demonstrate the potential of CLS within a low-energy MR-ToF device. Its first experimental results benchmark the validity of ion-optical simulations from the CLS perspective, which will also be applied to MIRACLS' 30-keV apparatus.

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

Cited by 3 publications

References 47 publications

Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps

Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps

First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy

Simulations of a proof-of-principle experiment for collinear laser spectroscopy within a multi-reflection time-of-flight device

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