New developments of the in-source spectroscopy method at RILIS/ISOLDE

Marsh, B. A.; Andel, B.; Andreyev, A. N.; Antalic, S.; Atanasov, D.; Barzakh, A. E.; Bastin, B.; Borgmann, Ch.; Capponi, L.; Cocolios, T. E.; Goodacre, T. Day; Dehairs, M.; Derkx, X.; Witte, H. De; Fedorov, D. V.; Fedosseev, V. N.; Focker, G.J.; Fink, D.; Flanagan, Kieran; Franchoo, S.; Ghys, L.; Huyse, M.; Imai, N.; Kalaninová, Z.; Köster, U.; Kreim, S.; Kesteloot, N.; Kudryavtsev, Yu.; Lane, John F.; Lecesne, N.; Liberati, V.; Lunney, D.; Lynch, K. M.; Manea, V.; Molkanov, P. L.; Nicol, T.; Pauwels, D.; Popescu, L.; Radulov, D.; Rapisarda, E.; Rosenbusch, M.; Rossel, R. E.; Rothe, S.; Schweikhard, L.; Seliverstov, M. D.; Sels, S.; Sjödin, A. M.; Truesdale, V. L.; Beveren, C. Van; Duppen, P. Van; Wendt, Κ.; Wienholtz, F.; Wolf, R.; Zemlyanoy, S. G.

doi:10.1016/j.nimb.2013.07.070

Cited by 53 publications

(39 citation statements)

References 30 publications

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“…Following the series of experiments on the study of nuclear spins and electromagnetic moments of Cu isotopes [56,[78][79][80] the in-source RIS collaboration has performed extensive laser and nuclear-spectroscopic studies of isotopes in the lead region, namely the Tl [81], Pb [70,[82][83][84], Hg [45], Bi [85], Po [43,77,86,87], At and Au chains [22,88]. Our recent activity in this field has revisited the neutron-deficient Au and Hg isotopes, which were first studied at ISOLDE approximately four decades ago: the very first optical spectroscopy experiments performed at an ISOL facility [89][90][91][92].…”

Section: In-source Rismentioning

confidence: 99%

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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.

117

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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%

“…This highly sensitive laser spectroscopy method for the study of unstable isotopes was pioneered at LNPI [21]. At ISOLDE it was further developed as the 'in-source resonance ionization spectroscopy (RIS)' method [22] and applied in a number of experiments for the study of nuclides far from stability. Examples of this application are presented in section 4.3.…”

mentioning

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.

117

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“…The ionization scheme consisted of two steps: a 422.7-nm step to excite the 7s 2 S1/2 → 8p 2 P3/2 transition at 23 658.306 cm −1 , and a nonresonant 1064-nm step, which was subsequently used to ionize the atoms. The 422.7-nm laser light was produced by frequency-doubling light from a 10 kHz Ti:Sa narrowband (1 GHz) laser provided by the resonance ionization laser ion source (RILIS) laser laboratory [32,33], in which the laser frequency could be stepped by using a data acquisition routine [34]. It was transported to the CRIS beam line using a 35-m long multimode optical fiber.…”

Section: Methodsmentioning

confidence: 99%

Laser and decay spectroscopy of the short-lived isotope Fr214 in the vicinity of the N=126 shell closure

et al. 2016

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Combined decay and laser spectroscopy measurements of the isotope 214 Fr are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the I π = (1 − ) spin assignment, the g-factor value of g( 214 Fr) = +0.241(16) corresponds to a relatively pure (π 1h 9/2 ⊗ ν2g 9/2 ) ground-state configuration. An alternative interpretation with g( 214 Fr) = +0.144(10), for a (2 − ) spin assignment suggests a greater contribution of configuration mixing with the ν1i 11/2 orbital. As the N = 126 shell closure is passed, a kink is observed at the δ r 2 213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.

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“…Finding efficient excitation schemes for resonance ionization at ISOLDE's laser ion source can also be supported by MR-ToF mass spectrometry [15,24]. In fact, this application is closely related to studies of isotope shifts and hyperfine structures of short-lived nuclides, which leads directly back to the investigation of the fundamental properties of these exotic species.…”

Section: Applications Of Isoltrap's Mr-tof Mass Analyzermentioning

confidence: 99%

“…It allows precision measurements as well as ion-intensity monitoring at high, i.e. isobar-selective, resolving power, which is useful for many studies beyond precision mass determination [15,16].…”

Section: Introductionmentioning

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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New developments of the in-source spectroscopy method at RILIS/ISOLDE

Cited by 53 publications

References 30 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

Laser and decay spectroscopy of the short-lived isotope Fr214 in the vicinity of the N=126 shell closure

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

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