Martin Martschini

From oxide to fluoride: Optimizing measurement strategies for 99Tc by AMS and n-TIMS

Stephanie Adler, Martin Martschini, Thomas Meisel, Peter Steier et autres

Chronology of the last deglaciation of the central Black Forest, south-western Germany, inferred from 10Be exposure dating of moraine boulders

Felix Martin Hofmann, Silke Merchel, Martin Martschini, C. Vivo-Vilches

The Blaubeuren Meteorite and its new Sibling: New Find in Close Vicinity Suggests a Complex Exposure History

Markus Patzek, Devansh Paliwal, Daniela Krietsch, Jean Alix Barrat et autres

Introduction: The Blaubeuren meteorite was discovered in 1989 in southern Germany by a homeowner digging a cable trench in his garden, though it remained unrecognized as a meteorite until 2020. It is an H4-5 ordinary chondrite breccia weighing over 30 kg and …

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Characterization and first application of a new 236Np spike for (A)MS measurements of 237Np

Andreas Wiederin, Hiromitsu Haba, Martin Martschini, Peter Steier et autres

The anthropogenic radionuclide 237 Np has excellent potential as an environmental tracer, complementing more established anthropogenic actinide tracers such as 236 U/ 238 U or 239,240 Pu. A major limitation in quantitatively measuring 237 Np concentrations by Accelerator Mass Spectrometry (AMS) has …

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Isobar separation of actinides in mass spectrometry by the combination of laser photodetachment with ion-gas interactions

Andreas Wiederin, Martin Martschini, Aya Sakaguchi, Peter Steier et autres

Abstract Isobaric interference is a major limitation of mass spectrometric measurements of trace radionuclides. For accelerator mass spectrometry (AMS), isobaric separation is only available up to the mass range of fission products. The present work explores the potential of ion-laser interaction mass …

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Author response for "Isobar separation of actinides in mass spectrometry by the combination of laser photodetachment with ion-gas interactions"

Andreas Wiederin, Martin Martschini, Aya Sakaguchi, Peter Steier et autres

Exploring the lowest levels of environmental Strontium-90 compared to Uranium-236 in marine carbonates and seawater

Stella Winkler, Karin Hain, Martin Martschini, Silke Merchel et autres

Strontium-90 (90Sr) is an anthropogenic radionuclide, which, due to its radiological relevance, has been most intensively monitored in the past. In terms of initial activity, over 630 PBq of this radionuclide have been distributed globally from stratospheric fallout of bomb-testing, and there …

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Author response for "Isobar separation of actinides in mass spectrometry by the combination of laser photodetachment with ion-gas interactions"

Andreas Wiederin, Martin Martschini, Aya Sakaguchi, Peter Steier et autres

Characterization and first application of a new 236Np spike for (A)MS measurements of 237Np

Andreas Wiederin, Hiromitsu Haba, Martin Martschini, Peter Steier et autres

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Technetium-99 determination in low-volume samples from the global environment with accelerator mass spectrometry

Karin Hain, Stephanie Adler, T. Faestermann, L.K. Fifield et autres

in river water highlights the need for further studies in urban areas to evaluate potential contributions from nuclear medicine. The achieved sensitivity allows monitoring of on-going releases, improving the risk assessment of releases from nuclear waste repositories and tracer applications in environmental …

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Near-threshold photodetachment of WF5- molecular anions in a cryogenic storage ring

Martin Martschini, D. Leimbach, Hubert Gnaser, D. Hanstorp et autres

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Technetium-99 determination in low-volume samples from the global environment with accelerator mass spectrometry

Karin Hain, Stephanie Adler, T. Faestermann, L. Keith Fifield et autres

The long-lived fission product technetium-99 ( 99 Tc, t 1/2 = (2.111± 0.012) × 10 5 years) was successfully detected in small-volume (10 L, and 1 g, respectively) environmental samples such as Pacific Ocean and river water, Antarctic snow, and peat.Its presence …