Towards optical spectroscopy of the element nobelium ( ${\sf Z }= \mathsf{102}$ ) in a buffer gas cell

Backe, H.; Kunz, P.; Lauth, W.; Dretzke, A.; Horn, R.; Kolb, T.; Laatiaoui, M.; Sewtz, M.; Ackermann, D.; Block, M.; Herfurth, F.; Heßberger, F. P.; Hofmann, S.; Mann, Robert B.

doi:10.1140/epjd/e2007-00198-1

Cited by 35 publications

(15 citation statements)

References 22 publications

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“…This is nowadays accomplished using gas cells filled with an inert buffer gas like argon. A dedicated RIS version, the so-called radiation detected resonance ionization spectroscopy method (RADRIS), has been developed for nobelium laser spectroscopy at GSI Darmstadt [16,17]. The setup is schematically shown in 1.…”

Section: Resonant Ionization Laser Spectroscopy Of Heavy Nuclidesmentioning

confidence: 99%

“…Applying the RADRIS method to the nobelium isotope 254 No, the strong ground state transition 1 S 0 -1 P 1 has been searched for in a tedious effort [16,17]. Such experiments depend crucially on the guidance by theoretical predictions.…”

Section: Epj Web Of Conferences 163 00006 (2017) Doi: 101051/epjconmentioning

confidence: 99%

“…The typical uncertainties and the scattering of the predictions resulted in scan range on the order of ≥ 2, 000 cm −1 that had to be covered. For a typical line width of in-gas cell spectroscopy of about 0.5 cm −1 [16] this corresponds to a few thousand frequency steps for the initial search. In the case of 254 No the cycle time for one such step sums up to about five minutes equivalent to a minimum search time of more than 200 hours to cover the range of the predicted atomic transitions.…”

Section: Epj Web Of Conferences 163 00006 (2017) Doi: 101051/epjconmentioning

confidence: 99%

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Laser spectroscopy studies on nobelium

Block

2017

EPJ Web Conf.

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Abstract. Laser spectroscopy of the heaviest elements provides high-precision data on their atomic and nuclear properties. For example, atomic level energies and ionization potentials allow us to probe the influence of relativistic effects on their atomic structure and to benchmark state-of-the-art atomic structure calculations. In addition, it offers an alternative route to determine nuclear properties like spins, magnetic moments and quadrupole moments in a nuclear model-independent way. Recently, a sensitive method based on resonant laser ionization has been applied to nobelium isotopes around N = 152 at GSI Darmstadt. In pioneering experiments, several atomic states have been identified extending the reach of laser spectroscopy beyond fermium. In this contribution, the main achievements and future perspectives are briefly summarized.

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Section: Resonant Ionization Laser Spectroscopy Of Heavy Nuclidesmentioning

confidence: 99%

Section: Epj Web Of Conferences 163 00006 (2017) Doi: 101051/epjconmentioning

confidence: 99%

Section: Epj Web Of Conferences 163 00006 (2017) Doi: 101051/epjconmentioning

confidence: 99%

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Laser spectroscopy studies on nobelium

Block

2017

EPJ Web Conf.

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“…The first such study of a superheavy atom [81] used 2.7 × 10 10 atoms of 255 Fm with a half life of 20.1 h, and was accompanied and guided by MCDF predictions of spectral energies. Other superheavy actinides have shorter lifetimes, on the order of seconds, and spectroscopic measurements for some of them were undertaken by a collaboration based at GSI [82]. The low production rates of the atoms and their short lifetimes necessitate reliable prediction of the position of transition lines, to avoid the need for broad wavelength scans.…”

Section: Electronic Spectrum Of Superheavy Elements Nobelium (Z=102) mentioning

confidence: 99%

Study of Actinides by Relativistic Coupled Cluster Methods

Eliav¹,

Kaldor²

2015

Computational Methods in Lanthanide and Actinide Chemistry

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“…Finally, the ground-breaking experiments at SHIPTRAP open up the perspective of direct mass measurements of single ions of SHE and laser spectroscopic studies of their atomic properties [107].…”

Section: +026mentioning

confidence: 99%

Superheavy element studies with preseparated isotopes

Düllmann¹

2011

Radiochimica Acta

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Superheavy elements / Transactinides / Physical preseparation / Recoil separatorSummary. In recent years, significant progress in the field of superheavy element research has been achieved thanks to a novel combination of techniques from different fields. This "physical preseparation" approach includes the coupling of an ancillary setup -typically a chemistry apparatus or a counting setup -to a physical recoil separator. This latter preseparator removes unwanted nuclear reaction products as well as the intense heavy-ion beam associated with superheavy element experiments and thus isolates the evaporation residues of the nuclear fusion reactions. These are guided to the separators's focal plane, where they are extracted and available for further transport to external setups, e.g., by a gas-jet. In this overview, the development of physical preseparation is described, and experimental results from nuclear chemistry and physics that were achieved with "preseparated" isotopes are summarized, with an emphasis on results relevant for superheavy element research. The covered topics range from chemical studies in the liquid as well as in the gas phase, the measurement of nuclear decay properties and of atomic masses. Preseparation was already shown to be a very powerful approach in these studies and promises to allow further progress in superheavy element research.

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Towards optical spectroscopy of the element nobelium ( ${\sf Z }= \mathsf{102}$ ) in a buffer gas cell

Cited by 35 publications

References 22 publications

Laser spectroscopy studies on nobelium

Laser spectroscopy studies on nobelium

Study of Actinides by Relativistic Coupled Cluster Methods

Superheavy element studies with preseparated isotopes

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