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

Wolf, R.; Beck, D.; Blaum, Klaus; Böhm, C.; Borgmann, Christopher; Breitenfeldt, M.; Herfurth, F.; Herlert, A.; Kowalska, Magdalena; Kreim, S.; Lunney, D.; Naimi, S.; Neidherr, D.; Rosenbusch, M.; Schweikhard, L.; Stanja, J.; Wienholtz, F.; Zuber, Κ.

doi:10.1016/j.nima.2012.05.067

Cited by 129 publications

(60 citation statements)

References 48 publications

(59 reference statements)

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“…Data acquisition links with a variety of ion detection systems available at ISOLDE have been established [22,48] to ensure laser-scan compatibility across the range of radioisotope decay modes and the abundancy distribution along an isotope chain: (α/β/γ) detection with the Leuven Windmill system [75]; direct ion counting with the ISOLTRAP multi-reflection time-of-flight mass separator [76]; and ion beam current measurements using the ISOLDE Faraday cups. Collectively these detection methods enable the determination of ion production rates from the nA range to as few as 0.01 ions per second [77].…”

Section: In-source Rismentioning

confidence: 99%

Ion beam production and study of radioactive isotopes with the laser ion source at ISOLDE

Fedosseev

Wendt

Rothe

et al. 2017

J. Phys. G: Nucl. Part. Phys.

123

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Ion beam production and study of radioactive isotopes with the laser ion source at ISOLDE At ISOLDE the majority of radioactive ion beams are produced using the resonance ionization laser ion source (RILIS). This ion source is based on resonant excitation of atomic transitions by wavelength tunable laser radiation.Since its installation at the ISOLDE facility in 1994, the RILIS laser setup has been developed into a versatile remotely operated laser system comprising state-of-the-art solid state and dye lasers capable of generating multiple high quality laser beams at any wavelength in the range of 210-950 nm. A continuous programme of atomic ionization scheme development at CERN and at other laboratories has gradually increased the number of RILIS-ionized elements. At present, isotopes of 40 different elements have been selectively laser-ionized by the ISOLDE RILIS. Studies related to the optimization of the laser-atom interaction environment have yielded new laser ion source types: the laser ion source and trap and the versatile arc discharge and laser ion source. Depending on the specific experimental requirements for beam purity or versatility to switch between different ionization mechanisms, these may offer a favourable alternative to the standard hot metal cavity configuration. In addition to its main purpose of ion beam production, the RILIS is used for laser spectroscopy of radioisotopes. In an ongoing experimental campaign the isotope shifts and hyperfine structure of long isotopic chains have been measured by the extremely sensitive in-source laser spectroscopy method. The studies performed in the lead region were focused on nuclear deformation and Made open access 7 August 2017Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.shape coexistence effects around the closed proton shell Z = 82. The paper describes the functional principles of the RILIS, the current status of the laser system and demonstrated capabilities for the production of different ion beams including the high-resolution studies of short-lived isotopes and other applications of RILIS lasers for ISOLDE experiments.

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Section: In-source Rismentioning

confidence: 99%

Ion beam production and study of radioactive isotopes with the laser ion source at ISOLDE

Fedosseev

Wendt

Rothe

et al. 2017

J. Phys. G: Nucl. Part. Phys.

123

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“…The decisive advantage compared to purification in Penning traps is a mass-resolving power R FWHM ¼ m=Ám in excess of 100000 [28][29][30] that is obtained in only several tens of milliseconds compared to hundreds of milliseconds in Penning traps. This gain of an order of magnitude in time expands the frontiers of exotic nuclides accessible by ion-trap facilities, as for 82 Zn with a half-life of t 1=2 ¼ 228ð10Þ ms [31].…”

mentioning

confidence: 99%

Plumbing Neutron Stars to New Depths with the Binding Energy of the Exotic NuclideZn82

et al. 2013

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Modeling the composition of neutron-star crusts depends strongly on binding energies of neutron-rich nuclides near the N ¼ 50 and N ¼ 82 shell closures. Using a recent development of time-of-flight mass spectrometry for on-line purification of radioactive ion beams to access more exotic species, we have determined for the first time the mass of 82 Zn with the ISOLTRAP setup at the ISOLDE-CERN facility. With a robust neutron-star model based on nuclear energy-density-functional theory, we solve the general relativistic Tolman-Oppenheimer-Volkoff equations and calculate the neutron-star crust composition based on the new experimental mass. The composition profile is not only altered but now constrained by experimental data deeper into the crust than before.

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“…The former can be studied by time-delaying the first step laser pulse with respect to the 532 nm laser and performing all scheme comparisons with the 532 nm laser still on. The latter will require a more selective means of analyzing the ion beam constituents, such as the ISOLTRAP MR-Tof-MS [27].…”

Section: Discussionmentioning

confidence: 99%

Resonance ionization scheme development for europium

et al. 2017

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Odd-parity autoionizing states of europium have been investigated by resonance ionization spectroscopy via two-step, two-resonance excitations. The aim of this work was to establish ionization schemes specifically suited for europium ion beam production using the ISOLDE Resonance Ionization Laser Ion Source (RILIS). 13 new RILIS-compatible ionization schemes are proposed. The scheme development was the first application of the Photo Ionization Spectroscopy Apparatus (PISA) which has recently been integrated into the RILIS setup.

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

Cited by 129 publications

References 48 publications

Ion beam production and study of radioactive isotopes with the laser ion source at ISOLDE

Ion beam production and study of radioactive isotopes with the laser ion source at ISOLDE

Plumbing Neutron Stars to New Depths with the Binding Energy of the Exotic NuclideZn82

Resonance ionization scheme development for europium

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