The ILIAS project for selective isobar suppression by laser photodetachment

Forstner, O.; Andersson, Pernilla; Hanstorp, Dag; Lahner, Johannes; Martschini, Martin; Pitters, Johanna; Priller, Alfred; Steier, Peter; Golser, Robin

doi:10.1016/j.nimb.2015.04.021

Cited by 14 publications

(13 citation statements)

References 24 publications

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“…Researchers at VERA, University of Vienna, have continued the Ion Laser InterAction Setup (ILIAS) project, which is exploring laser photodetachment of negative ions (Forstner et al . , Martschini et al . ) for future AMS radionuclide applications.…”

Section: Advances In Accelerator‐based Methodsmentioning

confidence: 99%

GGR Biennial Critical Review: Analytical Developments Since 2014

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Bugoi

et al. 2017

Geostandard Geoanalytic Res

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This GGR biennial critical review covers developments and innovations in key analytical methods published since January 2014, relevant to the chemical, isotopic and crystallographic characterisation of geological and environmental materials. In nine selected analytical fields, publications considered to be of wide significance are summarised, background information is provided and their importance evaluated. In addition to instrumental technologies, this review also presents a summary of new developments in the preparation and characterisation of rock, microanalytical and isotopic reference materials, including a précis of recent changes and revisions to ISO guidelines for reference material characterisation and reporting. Selected reports are provided of isotope ratio analyses by both solution-nebulisation MC-ICP-MS and laser ablation-ICP-MS, as well as of radioactive isotope geochronology by LA-ICP-MS. Most of the analytical techniques elaborated continue to provide new applications for geochemical analysis, however it is noted that instrumental neutron activation analysis has become less popular in recent years, mostly due to the reduced availability of nuclear reactors to act as a neutron source. Many of the newer applications reported here provide analysis at increasingly finer resolution. Examples include atom probe tomography, a very sensitive method providing atomic scale information, nanoscale SIMS, for isotopic imaging of geological and biological samples, and micro-XRF, which has a spatial resolution many orders of magnitude smaller than conventional XRF

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Section: Advances In Accelerator‐based Methodsmentioning

confidence: 99%

GGR Biennial Critical Review: Analytical Developments Since 2014

Linge

Bèdard

Bugoi

et al. 2017

Geostandard Geoanalytic Res

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“…It is argued [18] that such a system will be more efficient than standard AMS using sputter sources, especially if 14 C measurements of very small gaseous samples (CO 2 ) is of interest (see Section 2.2 below). Atmosphere Production of radionuclides by cosmic rays 14 c, 10 Be, 26 Al, 32 si, 36 cl, 39 Ar, 81 Kr, 129 10 Be, 26 Al, 41 ca, 53 Mn, 59 ni, 60 Fe Live supernova remnants in terrestrial materials 26 Al, 60 Fe, 244 Pu, ( 146 sm, 182 hf, 247 cm) stable trace isotopes in presolar grains 194,195,196,198 Pt Geochemical solar neutrino detection ( 97,98…”

Section: Accelerator Developmentsmentioning

confidence: 99%

“…For beta transitions the stable nuclide has the same mass number (A) -and nearly the same mass, but a different atomic number (Z) (e.g. 10 Be → 10 B, 14 C → 14 N, 26 Al → 26 Mg, 36 Cl → 36 S, 41 Ca → 41 K, 60 Fe → 60 Ni, 53 Mn → 53 Cr 90 Zr → 90 Mo, 129 I → 129 Xe). In any real sample material, the stable isobars are usually orders of magnitude more abundant than the very rare radionuclide one is interested to measure.…”

Section: Towards General Solutions For the Isobar Problemmentioning

confidence: 99%

Accelerator mass spectrometry: state of the art and perspectives

Kutschera

2016

Advances in Physics: X

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Accelerator mass spectrometry (AMS) is sometimes called 'the art of counting atoms one by one'. In addition to counting individual atoms, AMS is also capable to determine both mass number (A) and atomic number (Z). Since an atom (also called a nuclide) is unambiguously characterized by the proton number (Z) and the neutron number (N = A − Z), a rare nuclide can be well separated from possible background events, and extremely low abundances of specific nuclides can be measured. In general, the use of an accelerator system as a mass spectrometer improves the isotope abundance sensitivity by many orders of magnitude as compared to standard mass spectrometry (without an accelerator). In particular, AMS provides the means to measure minute traces of long-lived radioisotopes of cosmogenic and/or anthropogenic origin in essentially every domain of our environment at large. This allows one to use AMS for performing research in many different areas, ranging from archaeology to astrophysics. In this review, an update of the current status of AMS and an outlook to future developments in both technical and applied aspects will be presented. The transition from Mass Spectrometry (MS) to Accelera tor Mass Spectrometry (AMS)

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“…In recent projects for selective isobar cleaning with the use of lasers in AMS laser photodetachment is used to selectively neutralise unwanted isobars already at the low energy side of an AMS machine (see e.g. [6] and the references therein). For these studies precise knowledge about the EAs of atomic and molecular negative ions is required.…”

Section: Introductionmentioning

confidence: 99%

Opportunities for negative ions studies at the Frankfurt Low-energy Storage Ring (FLSR)

2020

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The room-temperature electrostatic heavy ion storage ring FLSR was originally designed to study the collision dynamics of atoms and molecules. Recently it has been equipped with a RF plasma ion source combined with a charge exchange cell to be able to perform studies with negative ions in the ring. In preliminary experiments beams of He − , O − and OH − could successfully be stored. The measured lifetime of the metastable He −-ion is in good agreement with previous results, showing that the lifetime measurement in this case is not limited by the storage time due to collisional detachment. In the case of O − and OH − storage times in the order of seconds have been achieved. In a next step laser beams will be introduced in the ring allowing photodetachment studies of vibrationally cold molecules.

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The ILIAS project for selective isobar suppression by laser photodetachment

Cited by 14 publications

References 24 publications

GGR Biennial Critical Review: Analytical Developments Since 2014

GGR Biennial Critical Review: Analytical Developments Since 2014

Accelerator mass spectrometry: state of the art and perspectives

Opportunities for negative ions studies at the Frankfurt Low-energy Storage Ring (FLSR)

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