Results 11 to 20 of about 1,109 (150)

TOF-SIMS in Cosmochemistry

, 2004
Time-of-flight secondary ion mass spectrometry (TOF-SIMS) was introduced into cosmochemistry about a decade ago. Major advantages of TOF-SIMS compared to other ion microprobe techniques are (a) parallel detection of all secondary ions with one polarity in a single measurement – both polarities in subsequent analyses, (b) high lateral resolution, (c ...
Stephan, T. (Thomas)
core   +3 more sources

Magnetic Domain Texture in Fe₃O₄ Thin Films on SiO₂ Nanospheres. [PDF]

Adv Mater
Fe3O4 thin films grown on ordered SiO2 nanospheres form curved nanocaps with 3D geometry, inducing magnetic domain texture. X‐ray spectromicroscopy (XMCD‐PEEM), cross‐sectional electron microscopy (STEM), and polarized grazing‐incidence small‐angle neutron scattering (GISANS) reveal how topography modulates magnetization.
Hamed MH, Xu Y, Elnaggar H, Zaghloul M, Mio AM, Backs A, Stellhorn A, Lima VO, Yin C, Bednarski-Meinke C, Steinke NJ, Petracic O, Brückel T, Saerbeck T, Qdemat A.   +14 more
europepmc   +2 more sources

A review of machine learning in geochemistry and cosmochemistry: Method improvements and applications

, 2022
The development of analytical and computational techniques and growing scientific funds collectively contribute to the rapid accumulation of geoscience data.
Wen, Tao, Zhang, Shuang, He, Yuyang, Ma, Xiaogang, Zhu, Yueqin, Zhou, You, Huang, Fang, 何雨旸, Zou, Xinyu   +8 more
core   +1 more source

Diversity, equity, and inclusion : tackling under-representation and recognition of talents in geochemistry and cosmochemistry [PDF]

, 2021
Diversity, at every step along the scientific path, drives innovative research. Scientific societies, like the Geochemical Society (GS) and the European Association of Geochemistry (EAG), have a significant influence over which discoveries and innovators
Anand, Pallavi, Middleton, Jennifer, Bots, Pieter, Dosseto, Anthony, Marin Carbonne, Johanna, Pourret, Olivier, Ngwenya, Bryne, Arndt, Sandra, Li, Zimin, J. V. Riches, Amy   +9 more
core   +4 more sources

Equitable Access, Open Science, and the Future of Publishing in Geochemistry and Cosmochemistry

The landscape of academic publishing, including in geochemistry and cosmochemistry, is evolving toward greater openness and accessibility. This editorial outlines the vision for Advances in Geochemistry and Cosmochemistry, a diamond open access journal ...
Tartèse, Romain, Advances In Geochemistry And Cosmochemistry Editorial Board, The Inuagural, Klöcking, Marthe, Kiseeva, Ekaterina S., Mallik, Ananya, Fonseca, Raúl O.C., Matthews, Simon W., Tartèse, Romain; id_orcid, Millet, Marc-Alban, Marin-Carbonne, Johanna, Darling, James R., Namur, Olivier, Ickert, Ryan B., Tierney, Jessica E., Pourret, Olivier, Dahrén, Börje, Torres, Mark A., Dahrén, Börje,   +17 more
core   +2 more sources

Cosmochemistry: Understanding the Solar System through analysis of extraterrestrial materials

, 2011
Cosmochemistry is the chemical analysis of extraterrestrial materials. This term generally is taken to mean laboratory analysis, which is the cosmochemistry gold standard because of the ability for repeated analysis under highly controlled conditions ...
Glenn J. MacPherson, Mark H. Thiemens
core   +1 more source

Phosphorus and Sulfur Cosmochemistry: Implications for the Origins of Life

, 2006
Phosphorus is a key element for life. This work reviews the role of phosphorus in life. Theories on the origin of life are confounded by a lack of reactive phosphorus, and attempts to overcome the dearth of reactive phosphorus must employ unrealistic ...
Pasek, Matthew Adam
core   +5 more sources

The 40K‐K dating system: 1. Improving data interpretation using new model calculations

Meteoritics &Planetary Science, EarlyView.
Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian, Suzette Timmerman, Ingo Leya   +2 more
wiley   +1 more source

Advanced aqueous alteration in primitive meteorites: Micro‐ to nanoscale studies of CR1 iron sulfides

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1806-1825, August 2026.
Abstract This study documents micro‐ to nanoscale observations of primary nebular and secondary parent body iron sulfides in the CR1 GRO 95577. Despite the extensive alteration of the bulk sample, some primary sulfides managed to avoid alteration, having originally formed in the solar nebula during chondrule formation by either fission‐sulfidization or
S. A. Singerling
wiley   +1 more source

Potassium isotopic compositions and exposure ages of evolved and silica‐rich achondrites

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 2140-2162, August 2026.
Abstract Some of the oldest igneous rocks in the Solar System include evolved and silica‐rich achondrites that originate from parent bodies less than 1000 km in diameter, referred to as planetesimals. While Earth was initially in a molten state and required continental crust formation and plate tectonics to generate andesite bulk compositions, evolved ...
Z. Vaci, Z. Tian, P. Koefoed, M. Habermann, M. Humayun, K. Ziegler, H. Busemann, D. Krietsch, J. M. D. Day, K. Wang   +9 more
wiley   +1 more source