Ion-molecule reactions of Ru<sup>+</sup> and Os<sup>+</sup> with oxygen in a Penning trap

Rieth, U.; Herlert, A.; Kratz, Jens Volker; Schweikhard, L.; Vogel, Manuel; Walther, Clemens

doi:10.1524/ract.2002.90.6.337

Cited by 12 publications

(3 citation statements)

References 36 publications

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“… 136 ) The EA measurements of the heaviest elements are of potential interest. A new stage of chemical investigations of the heaviest elements using their ion beams, such as gas-phase ion chemistry 137 – 141 ) and ion mobility measurements, 119 , 142 ) will open new avenues to the heaviest element chemistry.…”

Section: Discussionmentioning

confidence: 99%

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

NAGAME,

SATO

2024

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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The chemical characterization of the heaviest elements at the farthest reach of the periodic table (PT) and the classification of these elements in the PT are undoubtedly crucial and challenging subjects in chemical and physical sciences. The elucidation of the influence of relativistic effects on their outermost electronic configuration is also a critical and fascinating aspect. However, the heaviest elements with atomic numbers Z ≳ 100 must be produced at accelerators using nuclear reactions of heavy ions and target materials. Therefore, production rates for these elements are low, and their half-lives are as short as a few seconds to a few minutes; they are usually available in a quantity of only a few atoms at a time. Here, we review some highlighted studies on heavy actinide and light transactinide chemical characterization performed at the Japan Atomic Energy Agency tandem accelerator facility. We discuss briefly the prospects for future studies of the heaviest elements.

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Section: Discussionmentioning

confidence: 99%

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

NAGAME,

SATO

2024

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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“…[52] For both cases, the stabilization of defined chemical species and the kinetic effects during their formation and transport are the most challenging tasks to be addressed. For instance, in preparatory experiments for group 7 and group 8 transactinides, Bh [53] and Hs, [54] it was observed that the oxidation of these elements to high oxidation states in oxygen and water-containing reactive gases is, despite being thermodynamically favored, severely kinetically hindered, i.e. an observation possibly interesting for further investigations.…”

Section: Discussionmentioning

confidence: 99%

Radiochemical Research with Transactinide Elements in Switzerland

Steinegger

Eichler

2020

Chimia

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Here, we present a review on a fundamental radiochemical research topic performed by Swiss scientists in national and international collaborations, utilizing large accelerator facilities at the Paul Scherrer Institute as well as abroad. The chemical investigation of the heaviest elements of the periodic table is a truly multidisciplinary effort, which allows scientists to venture into a variety of fields ranging from nuclear and radiochemistry to experimental and theoretical work in inorganic and physical chemistry all the way to nuclear and atomic physics. The structure and fundamental ordering scheme of all elements in the periodic table, as established more than 150 years ago, is at stake: The ever increasing addition of new elements at the heavy end of the periodic table together with a growing influence of relativistic effects, raises the question of how much periodicity applies in this region of the table. Research on the heaviest chemical elements requires access to large heavy-ion accelerator facilities as well as to rare actinide isotopes as target materials. Thus, this scientific area is inevitably embedded in joint international efforts. Its fundamental character ensures academic relevance and thereby substantially contributes to the future of nuclear sciences in Switzerland.

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“…This novel technique studies the chemical properties of these elements in the gas phase utilizing the combined capabilities of the Berkeley gas-filled separator (BGS) and the recently installed FIONA (For the Identification of Nuclide A ) mass analyzer. − This setup allows (i) the production of ions of heavy and super heavy elements, (ii) separation of those ions from the beam and unwanted nuclear reaction products in the BGS, (iii) the ability to trap and cool the ions in an ion-trap in FIONA, where (iv) reactive gas can be introduced and allowed to react with the trapped ions for a fixed interval of time, and (v) the number and mass of unreacted and reacted ions ejected from the trap can be directly measured. The new method is based on the studies with Penning traps, inductively coupled plasma selected-ion flow tube, and Fourier transform ion cyclotron resonance mass spectrometry . Experimental studies using this technique can provide quantitative information such as ionization potentials, bond-dissociation energies, and kinematic reaction rates.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Second-Ionization Potential of Lawrencium: Investigating the End of the Actinide Series with a One-Atom-at-a-Time Gas-Phase Ion Chemistry Technique

et al. 2021

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Experiments were performed at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron facility to investigate the electron-transfer reduction reaction of dipositive Lr (Z = 103) with O 2 gas. Ions of 255 Lr were produced in the fusion−evaporation reaction 209 Bi( 48 Ca,2n) 255 Lr and were studied with a novel gas-phase ion chemistry technique. The produced 255 Lr 2+ ions were trapped and O 2 gas was introduced, such that the charge-exchange reaction to reduce 255 Lr 2+ to 255 Lr 1+ was observed and the reaction rate constant was determined to be k = 1.5(7) × 10 −10 cm 3 /mol/s. The observation that this reaction proceeds establishes the lower limit on the second ionization potential of Lr to be 13.3(3) eV. This gives further support that the actinide series terminates with Lr. Additionally, this result can be used to better interpret the situation concerning the placement of Lu and Lr on the periodic table within the current framework of the actinide hypothesis. The success of this experimental approach now identifies unique opportunities for future gas-phase reaction studies on actinide and super heavy elements.

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Ion-molecule reactions of Ru⁺ and Os⁺ with oxygen in a Penning trap

Cited by 12 publications

References 36 publications

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

Radiochemical Research with Transactinide Elements in Switzerland

Assessment of the Second-Ionization Potential of Lawrencium: Investigating the End of the Actinide Series with a One-Atom-at-a-Time Gas-Phase Ion Chemistry Technique

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Ion-molecule reactions of Ru+ and Os+ with oxygen in a Penning trap

Cited by 12 publications

References 36 publications

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

Radiochemical Research with Transactinide Elements in Switzerland

Assessment of the Second-Ionization Potential of Lawrencium: Investigating the End of the Actinide Series with a One-Atom-at-a-Time Gas-Phase Ion Chemistry Technique

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Ion-molecule reactions of Ru⁺ and Os⁺ with oxygen in a Penning trap