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Coherent Excitation of the Highly Forbidden Electric Octupole Transition in Yb+ 172

Fürst, H.A.; Yeh, C.-H.; Kalincev, D.; Kulosa, A.P.; Dreissen, L.S.; Lange, R.; Benkler, E.; Huntemann, N.; Peik, E.; Mehlstäubler, T.E. (College Park, MD : American Physical Society, 2020)

We report on the first coherent excitation of the highly forbidden S21/2?F27/2 electric octupole (E3) transition in a single trapped Yb+172 ion, an isotope without nuclear spin. Using the transition in Yb+171 as a reference, ...
Geochemical and Isotopic Evolution of Late Oligocene Magmatism in Quchan, NE Iran

Moghadam, H.S.; Li, Q.L.; Kirchenbaur, M.; Garbe-Schönberg, D.; Lucci, F.; Griffin, W.L.; Ghorbani, G. (Hoboken, NJ : Wiley, 2021)

Magmatic activity that accompanied the collision between Arabia and Eurasia at ∼27 Ma, provides unique opportunities for understanding the triggers and magma reservoirs for collisional magmatism and its different styles ...
In situ determination of antimony isotope ratios in Sb minerals by femtosecond LA-MC-ICP-MS

Kaufmann, A.B.; Lazarov, M.; Kiefer, S.; Majzlan, J.; Weyer, S. (Cambridge : ChemSoc, 2021)

Here we present a method for in situ determination of stable antimony (Sb) isotope compositions by ultraviolet (UV)-femtosecond-laser-ablation-multi-collector-ICP-MS (fs-LA-MC-ICP-MS). Metallic antimony and a number of Sb ...
Isotope diffusion and re-equilibration of copper and evaporation of mercury during weathering of tetrahedrite in an oxidation zone

Majzlan, Juraj; Herrmann, Julia; Števko, Martin; Wiederhold, Jan G.; Lazarov, Marina; Milovský, Rastislav (München : Elsevier, 2023)

To understand the mobility of heavy metals during oxidative weathering of sulfides, we investigated weathering processes of tetrahedrite [(Cu,Fe,Zn,Hg)12(Sb,As)4S13] in an oxidation zone with abundant siderite (FeCO3) and ...
New horizons in microparticle forensics: Actinide imaging and detection of 238 Pu and 242m Am in hot particles

Bosco, Hauke; Hamann, Linda; Kneip, Nina; Raiwa, Manuel; Weiss, Martin; Wendt, Klaus; Walther, Clemens (Washington, DC [u.a.] : Assoc., 2021)

Micrometer-sized pollutant particles are of highest concern in environmental and life sciences, cosmochemistry, and forensics. From their composition, detailed information on origin and potential risks to human health or ...
Precision Isotope Shift Measurements in Calcium Ions Using Quantum Logic Detection Schemes

Gebert, Florian; Wan, Yong; Wolf, Fabian; Angstmann, Christopher N.; Berengut, Julian C.; Schmidt, Piet O. (College Park, MD : American Physical Society, 2015)

We demonstrate an efficient high-precision optical spectroscopy technique for single trapped ions with nonclosed transitions. In a double-shelving technique, the absorption of a single photon is first amplified to several ...
Simultaneous cancer control and diagnosis with magnetic nanohybrid materials

Saadat, Reza; Renz, Franz (Frankfurt am Main : Beilstein-Institut zur Forderung der Chemischen Wissenschaften, 2016)

Coated magnetite nanoparticles were linked to 68Ga complexes used in the positron emission tomography (PET) for a new technical approach to detect cancer tissue with radiopharmaceuticals. By substitution of the Ga isotope ...
Simultaneous determination of δ11B and B/Ca ratio in marine biogenic carbonates at nanogram level

Kaczmarek, Karina; Horn, Ingo; Nehrke, Gernot; Bijma, Jelle (Amsterdam : Elsevier, 2015)

In this study we introduce a new in situ technique which allows the determination of the boron isotopic composition and B/Ca ratios simultaneously at the nanogram level using a combination of optical emission spectroscopy ...
Solvent-mediated isotope effects strongly influence the early stages of calcium carbonate formation: exploring D2O vs. H2O in a combined computational and experimental approach

King, Michael; Avaro, Jonathan T.; Peter, Christine; Hauser, Karin; Gebauer, Denis (Cambridge [u.a.] : Soc., 2021)

In experimental studies, heavy water (D2O) is employed, e.g., so as to shift the spectroscopic solvent background, but any potential effects of this solvent exchange on reaction pathways are often neglected. While the ...
Sulfur degassing at Erta Ale (Ethiopia) and Masaya (Nicaragua) volcanoes: Implications for degassing processes and oxygen fugacities of basaltic systems

De Moor, J.M.; Fischer, T.P.; Sharp, Z.D.; King, P.L.; Wilke, M.; Botcharnikov, Roman E.; Cottrell, E.; Zelenski, M.; Marty, B.; Klimm, K.; Rivard, C.; Ayalew, D.; Ramirez, C.; Kelley, K.A. (Hoboken, NJ : Blackwell Publishing Ltd, 2013)

We investigate the relationship between sulfur and oxygen fugacity at Erta Ale and Masaya volcanoes. Oxygen fugacity was assessed utilizing Fe 3+/ΣFe and major element compositions measured in olivine-hosted melt inclusions ...
Vibrational-state and isotope dependence of high-order harmonic generation in water molecules

Falge, Mirjam; Engel, Volker; Lein, Manfred (College Park, MD : American Physical Society, 2010)

We report calculations on high-order harmonic generation in water molecules. Spectra are determined for various initial vibrational states of H2O and its isotope D2O. It is demonstrated that the ratio of the spectra for ...

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