A new resonant Laser-SNMS system for environmental ultra-trace analysis: Installation and optimization

Franzmann, Michael; Bosco, Hauke; Walther, Clemens; Wendt, Κ.

doi:10.1016/j.ijms.2017.10.003

Cited by 11 publications

(7 citation statements)

References 10 publications

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“…In the present work, multicolor laser resonant ionization (RI) was chosen for an element-selective production of ions and highly efficient suppression of isobaric interferences. Stepwise absorption of precisely tuned laser radiation selectively excites, and lastly ionizes, atoms of one specific target element for further mass separation and single ion detection (29)(30)(31).…”

Section: Resultsmentioning

confidence: 99%

New horizons in microparticle forensics: Actinide imaging and detection of ²³⁸ Pu and ^242m Am in hot particles

et al. 2021

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Section: Resultsmentioning

confidence: 99%

New horizons in microparticle forensics: Actinide imaging and detection of ²³⁸ Pu and ^242m Am in hot particles

et al. 2021

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“…Pulses of the three lasers are temporally overlapped with 5 ns precision by using a master trigger in combination with a 4 channel delay generator (DG645 by SRS), triggering the individual pump lasers as described in [1]. The laser beams are transported into the vacuum chamber of the TOF-SIMS, where they are spatially overlapped just above the sample, which is mounted on a high-precision x, y, z positioning table.…”

Section: Methodsmentioning

confidence: 99%

“…The overlap of the frequency doubled laser beam in the blue spectral region with the beam of the first fundamental laser operating in the red spectral range is performed by a dichroic mirror. In contrast to [1], the overlap with the second laser beam in the fundamental spectral region was achieved by a knife edge laser beam transport mirror instead of by polarization optics to retain the freedom of individually selecting a polarization angle for each laser beam (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

Influence of the hyperfine structure on plutonium in resonant laser-SNMS

et al. 2020

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Resonance ionization mass spectrometry is an ultra-sensitive and highly element selective tool for spectroscopy, ionization and detection of atoms and thus enables rare isotope determination. In combination with spatially resolved sputtering of neutrals by an initial ion beam, e.g. within a commercial secondary ion mass spectrometer, an isotope and isobar selective analysis technique with resolution on the micrometer scale for particles and surfaces is realized. Detection of minuscule amounts of specific actinides, e.g. of plutonium, in environmental and technical samples by this ultra-trace analysis technique requires detailed knowledge about the atomic physics of the element. Identification and characterization of the specific resonance ionization scheme applied within the particular geometry of the apparatus in use is needed. An analysis of the dependence of the specifications, specifically regarding the influence of the relative laser beam polarizations is presented here as an aspect, that could have a severe impact on isotope ratio precision and overall efficiency in the resulting ion signal.

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“…The method also provides an inherent element selectivity. These advantages make the RIS technique attractive for many applications from trace detection [132,133,134,77] to efficient ionization of rare isotopes at radioactive beam facilities [135,136,137,138] and for spectroscopic investigations [139,3].…”

Section: Principles Of Resonant Laser Excitationmentioning

confidence: 99%

Recent progress in laser spectroscopy of the actinides

Block,

Laatiaoui,

Raeder

2020

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The interest to perform laser spectroscopy in the heaviest elements arises from the strong impact of relativistic effects, electron correlations and quantum electrodynamics on their atomic structure. Once this atomic structure is well understood, laser spectroscopy also provides access to nuclear properties such as spins, mean square charge radii and electromagnetic moments in a nuclear-model independent way. This is of particular interest for the heaviest actinides around N = 152, a region of shell-stabilized deformed nuclei. The experimental progress of laser spectroscopy in this region benefitted from continuous methodological and technical developments such as the introduction of buffer-gas-stopping techniques that enabled the access to ever more exotic nuclei far-off stability. The key challenges faced in this endeavor are small yields, nuclides with rather short half-lives and the need to search for atomic transitions in a wide spectral range guided by theoretical predictions. This paper describes the basics of the most common experimental methods and discusses selected recent results on the atomic and nuclear properties of the actinides up to nobelium where pioneering experiments were performed at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany.

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A new resonant Laser-SNMS system for environmental ultra-trace analysis: Installation and optimization

Cited by 11 publications

References 10 publications

New horizons in microparticle forensics: Actinide imaging and detection of ²³⁸ Pu and ^242m Am in hot particles

New horizons in microparticle forensics: Actinide imaging and detection of ²³⁸ Pu and ^242m Am in hot particles

Influence of the hyperfine structure on plutonium in resonant laser-SNMS

Recent progress in laser spectroscopy of the actinides

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A new resonant Laser-SNMS system for environmental ultra-trace analysis: Installation and optimization

Cited by 11 publications

References 10 publications

New horizons in microparticle forensics: Actinide imaging and detection of 238 Pu and 242m Am in hot particles

New horizons in microparticle forensics: Actinide imaging and detection of 238 Pu and 242m Am in hot particles

Influence of the hyperfine structure on plutonium in resonant laser-SNMS

Recent progress in laser spectroscopy of the actinides

Contact Info

Product

Resources

About

New horizons in microparticle forensics: Actinide imaging and detection of ²³⁸ Pu and ^242m Am in hot particles

New horizons in microparticle forensics: Actinide imaging and detection of ²³⁸ Pu and ^242m Am in hot particles