An ion guide laser ion source for isobar-suppressed rare isotope beams

Raeder, S.; Heggen, H.; Lassen, J.; Ames, F.; Bishop, D.; Bricault, P.; Kunz, P.; Mjøs, Anders; Teigelhöfer, A.

doi:10.1063/1.4868496

Cited by 58 publications

(49 citation statements)

References 39 publications

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“…The letter T ('trap') of the LIST acronym is somewhat misleading since the LIST offers only two-dimensional (transverse) confinement of ions and therefore acts as an ion guide, rather than as an ion trap. At the ISAC-TRIUMF facility, this distinction has been acknowledged by the use of the IG-LIS (ion guide laser ion source) acronym [37], although this name has the potential to be confused with that of the IGLIS (in gas laser ionization and spectroscopy) method used at gas-catcher ISOL facilities.…”

Section: Rilis Laser Systemmentioning

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.

128

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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: Rilis Laser Systemmentioning

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.

128

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“…The rare-isotope beams (RIBs) were produced via spallation reactions from a 35 µA, 480-MeV proton beam incident on a SiC target. Non-ionized reaction products were subsequently released into the Ion-Guide Laser Ion Source (IG-LIS), which selectively ionized magnesium [25]. The use of IG-LIS provided a suppression of surface-ionized contaminants by nearly 6 orders of magnitude, without which this measurement would not have been possible due to high levels of contamination from the surface-ionized 22 Na.…”

mentioning

confidence: 99%

High-precision QEC -value measurement of the superallowed β+ emitter Mg22 and an ab

Reiter
¹
,

Leach
²
,

Drozdowski
³

et al. 2017

Phys. Rev. C

11
5
22
0

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“…The ionguide laser ion source (IG-LIS) [24] was used to suppress surface-ionized isobars such as In and Cs, while the neutral Cd atoms of interest were extracted and selectively laser-ionized in a three-step excitation scheme. The Cd isotopes of interest were then accelerated to 28 keV, selected by a high-resolution mass separator and delivered to the GRIFFIN spectrometer.…”

mentioning
confidence: 99%

Half-lives of neutron-richCd128–130
Dunlop
¹
,
Bildstein²,
Dillmann³
et al. 2016
Phys. Rev. C
26
4
28
0
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The β-decay half-lives of [128][129][130] Cd have been measured with the newly commissioned GRIFFIN γ-ray spectrometer at the TRIUMF-ISAC facility. The time structures of the most intense γ-rays emitted following the β-decay were used to determine the half-lives of 128 Cd and 130 Cd to be T 1/2 = 246.2(21) ms and T 1/2 = 126(4) ms, respectively. The half-lives of the 3/2 + and 11/2 − states of 129 Cd were measured to be T 1/2 (3/2 + ) = 157(8) ms and T 1/2 (11/2 − ) = 147(3) ms. The half-lives of the Cd isotopes around the N = 82 shell closure are an important ingredient in astrophysical simulations to derive the magnitude of the second r-process abundance peak in the A ∼ 130 region. Our new results are compared with recent literature values and theoretical calculations.

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An ion guide laser ion source for isobar-suppressed rare isotope beams

Cited by 58 publications

References 39 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

High-precision QEC -value measurement of the superallowed β+ emitter Mg22 and an ab

Half-lives of neutron-richCd128–130

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