Generation of thorium ions by laser ablation and inductively coupled plasma techniques for optical nuclear spectroscopy

Troyan, V. I.; Borisyuk, P. V.; Khalitov, R. R.; Krasavin, А. V.; Lebedinskiǐ, Yu. Yu.; Pal’chikov, V. G.; Poteshin, S. S.; Сысоев, А. А.; Yakovlev, V. P.

doi:10.1088/1612-2011/10/10/105301

Cited by 21 publications

(15 citation statements)

References 17 publications

(20 reference statements)

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“…The table lists the data on the rela tive concentrations of silicon (substrate and oxide layer), carbon, oxygen, and thorium atoms in the deposited films calculated from the intensities of the Si2p, С1s, О1s, and Th4f 7/2 XPS lines by Eq. (1) according to the method proposed in [11], as well as the positions of the lines.…”

Section: Resultsmentioning

confidence: 99%

The formation of submonolayer thorium coatings on a silicon oxide surface by electrochemical deposition

et al. 2014

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Data are reported on the mechanisms of the formation of submonolayer coatings based on tho rium oxide on the surface of Si(111) single crystal with natural oxide as a result of electrochemical deposition. It is experimentally shown that the deposition of thorium atoms from an acetone solution of Th(NO 3 ) 4 onto the surface of natural silicon oxide leads to the formation of defects in the thin silicon oxide layer, which is accompanied by the deposition of thorium nanoclusters onto a pure silicon surface. The observed effects have been qualitatively explained assuming the breakdown of natural silicon oxide due to the presence of an elec trical double layer in the near surface region of the cathode.

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Section: Resultsmentioning

confidence: 99%

The formation of submonolayer thorium coatings on a silicon oxide surface by electrochemical deposition

et al. 2014

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“…In the main approach thorium ions are generated by laser ablation from a solid 229 Th target. The method was successfully applied for loading of thorium ( 229 Th or 232 Th) ions into Paul traps at the Georgia Institute of Technology [56][57][58]69,278,279,334], at PTB [132,221,344,422,423], at the Moscow Engineering Physics Institute (MePhI) [37,41,379] at a collaboration of different institutes in Mainz [109,341] and most recently at Griffith University in Brisbane [264].…”

Section: Generation Of 229 Th 3+ Ionsmentioning

confidence: 99%

“…Alternative approaches that have been investigated are inductively coupled plasma techniques [379], electron-beam evaporation [380,383] and the extraction of ions from a 233 U source [266,397,399]. The production of thorium ions by laser ablation has the advantages that it is simple and does not require a helium buffer-gas environment.…”

Section: Generation Of 229 Th 3+ Ionsmentioning

confidence: 99%

The $$^{229}$$Th isomer: prospects for a nuclear optical clock

Wense

2020

Eur. Phys. J. A

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The proposal for the development of a nuclear optical clock has triggered a multitude of experimental and theoretical studies. In particular the prediction of an unprecedented systematic frequency uncertainty of about $$10^{-19}$$ 10 - 19 has rendered a nuclear clock an interesting tool for many applications, potentially even for a re-definition of the second. The focus of the corresponding research is a nuclear transition of the $$^{229}$$ 229 Th nucleus, which possesses a uniquely low nuclear excitation energy of only $$8.12\pm 0.11$$ 8.12 ± 0.11 eV ($$152.7\pm 2.1$$ 152.7 ± 2.1 nm). This energy is sufficiently low to allow for nuclear laser spectroscopy, an inherent requirement for a nuclear clock. Recently, some significant progress toward the development of a nuclear frequency standard has been made and by today there is no doubt that a nuclear clock will become reality, most likely not even in the too far future. Here we present a comprehensive review of the current status of nuclear clock development with the objective of providing a rather complete list of literature related to the topic, which could serve as a reference for future investigations.

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“…An inductively coupled plasma technique for ion loading from liquid solutions of thorium salts was studied [56] and the development of a quadrupole Paul trap is in progress.…”

Section: Experimental Search For the 229 Th Nuclear Transitionmentioning

confidence: 99%

Nuclear clocks based on resonant excitation of γ-transitions

Peik

Okhapkin²

2015

Comptes Rendus. Physique

111

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We review the ideas and concepts for a clock that is based on a radiative transition in the nucleus rather than in the electron shell. This type of clock offers advantages like an insensitivity against field-induced systematic frequency shifts and the opportunity to obtain high stability from interrogating many nuclei in the solid state. Experimental work concentrates on the low-energy (about 8 eV) isomeric transition in 229 Th. We review the status of the experiments that aim at a direct optical observation of this transition and outline the plans for high-resolution laser spectroscopy experiments.

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Generation of thorium ions by laser ablation and inductively coupled plasma techniques for optical nuclear spectroscopy

Cited by 21 publications

References 17 publications

The formation of submonolayer thorium coatings on a silicon oxide surface by electrochemical deposition

The formation of submonolayer thorium coatings on a silicon oxide surface by electrochemical deposition

The $$^{229}$$Th isomer: prospects for a nuclear optical clock

Nuclear clocks based on resonant excitation of γ-transitions

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