Prospects for laser spectroscopy, ion chemistry and mobility measurements of superheavy elements in buffer-gas traps

Backe, H.; Lauth, W.; Block, M.; Laatiaoui, M.

doi:10.1016/j.nuclphysa.2015.07.002

Cited by 51 publications

(37 citation statements)

References 84 publications

(133 reference statements)

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“…This work opened the way for the first IP measurements of transactinide SHEs on an atom-at-a-time scale. The measurement of the first IP of No is also in progress [9]. Therefore, it is timely to provide accurate predictions for these superheavy atoms and their ions, critically evaluated for their accuracy.…”

Section: Introductionmentioning

confidence: 99%

Ionization potentials of superheavy elements No, Lr, and Rf and their ions

Dzuba

Safronova

et al. 2016

Phys. Rev. A

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We predict ionization potentials of superheavy elements No, Lr, and Rf and their ions using a relativistic hybrid method that combines configuration interaction (CI) with the linearized coupled-cluster approach. Extensive study of the completeness of the four-electron CI calculations for Hf and Rf was carried out. As a test of theoretical accuracy, we also calculated ionization potential of Yb, Lu, Hf, and their ions, which are homologues of the superheavy elements of this study.

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Section: Introductionmentioning

confidence: 99%

Ionization potentials of superheavy elements No, Lr, and Rf and their ions

Dzuba

Safronova

et al. 2016

Phys. Rev. A

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“…In addition, detailed studies of the elements with Z ≥ 110 are hampered by limited statistics due to low cross sections on a level of 1-10 picobarn. Lighter nuclides in the region around Z = 100, N = 152 can be produced with higher rates that allow Penning trap-mass spectrometry [23], laser spectroscopy [24] and α-γ spectroscopy [25]. Indeed, some of the single-particle orbitals that are responsible for the spherical shell gap at Z = 114 appear at low excitation energy in deformed nuclei around Z ≈ 100, N = 152.…”

Section: Scientific Questions Addressed By Laser Spectroscopymentioning

confidence: 99%

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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“…The combination of low production cross sections, the lack of stable isotopes, and correspondingly only a limited number of reliably determined optical transitions available from literature add to the challenge of performing laser spectroscopy on these heaviest elements. Due to the scarcity of ground-state nuclear structure information in this region of the nuclear chart, efforts are under way to develop suitable techniques which provide the required sensitivity to efficiently make use of the limited quantity of isotopes which can be produced [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

High-resolution laser spectroscopy of long-lived plutonium isotopes

et al. 2017

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High-resolution laser spectroscopy of long-lived plutonium isotopes Voss, Annika; Sonnenschein, Volker; Campbell, P.; Cheal, B.; Kron, T.; Moore, Iain; Pohjalainen, Ilkka; Raeder, S.; Trautmann, N.; Wendt, K.Voss, A., Sonnenschein, V., Campbell, P., Cheal, B., Kron, T., Moore, I., . . . Wendt, K. (2017 Long-lived isotopes of plutonium were studied using two complementary techniques, high-resolution resonance ionization spectroscopy (HR-RIS) and collinear laser spectroscopy (CLS). Isotope shifts have been measured on the 5f 6 7s 2 7 F 0 → 5f 5 6d 2 7s (J = 1) and 5f 6 7s 2 7 F 1 → 5f 6 7s7p (J = 2) atomic transitions using the HR-RIS method and the hyperfine factors have been extracted for the odd mass nuclei 239,241 Pu. CLS was performed on the 5f 6 7s 8 F 1/2 → J = 1/2 (27 523.61 cm −1 ) ionic transition with the hyperfine A factors measured for 239 Pu. Changes in mean-squared charge radii have been extracted and show a good agreement with previous nonoptical methods, with an uncertainty improvement by approximately one order of magnitude. Plutonium represents the heaviest element studied to date using collinear laser spectroscopy.

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Prospects for laser spectroscopy, ion chemistry and mobility measurements of superheavy elements in buffer-gas traps

Cited by 51 publications

References 84 publications

Ionization potentials of superheavy elements No, Lr, and Rf and their ions

Ionization potentials of superheavy elements No, Lr, and Rf and their ions

Laser spectroscopy studies on nobelium

High-resolution laser spectroscopy of long-lived plutonium isotopes

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