Results 141 to 150 of about 110,450 (295)

Precision measurement of the 5 2S1/2 - 4 2D5/2 quadrupole transition isotope shift between 88Sr+ and 86Sr+

, 2010
We have measured the isotope shift of the narrow quadrupole-allowed 5 2S1/2 - 4 2D5/2 transition in 86Sr+ relative to the most abundant isotope 88Sr+.
G. K. Woodgate, John Chiaverini, Julian C. Berengut, W. King, Warren E. Lybarger   +4 more
core   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

Sudbury project (University of Muenster-Ontario Geological Survey): Petrology, chemistry, and origin of breccia formations [PDF]

Within the Sudbury Project of the University of Muenster and the Ontario Geological Survey special emphasis was put on the breccia formations exposed at the Sudbury structure (SS) because of their crucial role for the impact hypothesis.
Avermann, M., Brockmeyer, P., Deutsch, A., Lakomy, R., Mueller-Mohr, V., Stoeffler, D.   +5 more
core   +1 more source

Moon's volcanic history revealed in glassy spherules from Apollo 17 soil 76501

Meteoritics &Planetary Science, EarlyView.
Abstract Rapidly quenched droplets of pyroclastically erupted lava are common in lunar regolith at landing sites proximal to the maria. Here, we document the U‐Pb chronologies, major element, and trace element compositions of picritic glassy particles from Apollo 17 regolith sample 76501. These particles are dominated by high‐Ti compositions similar to
Alexander A. Nemchin, Marc D. Norman, Martin J. Whitehouse, Evgenia Salin, Nicholas E. Timms, Tao Long, Xiaochao Che, Renaud Merle, Fred Jourdan, Tao Luo   +9 more
wiley   +1 more source

Responses of Sr, Nd, and S Isotopes of Seawater to the Volcanic Eruptions During the Early Middle Triassic, South China

Geochemistry, Geophysics, Geosystems
The wide distribution of tuff layers, locally named the “green bean rocks” (GBRs) in the Yangtze Block straddling the Early Middle Triassic marine sequence indicates intense volcanic eruption(s).
L. J. Shen, Y. J. Zhao, Z. J. Zhu, C. L. Liu   +3 more
doaj   +1 more source

Explosive Nucleosynthesis of Weak r-Process Elements in Extremely Metal-Poor Core-Collapse Supernovae

, 2008
There have been attempts to fit the abundance patterns of extremely metal-poor stars with supernova nucleosynthesis models for the lighter elements than Zn. On the other hand, observations have revealed that the presence of EMP stars with peculiarly high
Aoki, Chieffi, Frölich, Heger, Heger, Hideyuki Umeda, Honda, Honda, Iwamoto, Maeda, Nagataki, Natsuko Izutani, Nozomu Tominaga, Popham, Pruet, Pruet, Pruet, Pruet, Qian, Sneden, Sneden, Tominaga, Tominaga, Travaglio, Umeda, Umeda, Wanajo, Wanajo, Yoshida   +28 more
core   +1 more source

X‐ray computed tomography study of terrestrial analog cores in preparation for Mars sample return

Meteoritics &Planetary Science, EarlyView.
Abstract Mars Sample Return (MSR) is expected to transform planetary science by providing unprecedented access to pristine Martian material. Initial characterization in the sample receiving facility (SRF) will rely on nondestructive techniques such as X‐ray computed tomography (XCT) to document the condition, distribution, and internal features of ...
Sophie Benaroya, Christopher D. K. Herd, David T. Flannery, Nicolas Randazzo   +3 more
wiley   +1 more source

Strontium isoscape of sub-Saharan Africa allows tracing origins of victims of the transatlantic slave trade

Nature Communications
Strontium isotope (87Sr/86Sr) analysis with reference to strontium isotope landscapes (Sr isoscapes) allows reconstructing mobility and migration in archaeology, ecology, and forensics.
Xueye Wang, Gaëlle Bocksberger, Mimi Arandjelovic, Anthony Agbor, Samuel Angedakin, Floris Aubert, Emmanuel Ayuk Ayimisin, Emma Bailey, Donatienne Barubiyo, Mattia Bessone, René Bobe, Matthieu Bonnet, Renée Boucher, Gregory Brazzola, Simon Brewer, Kevin C. Lee, Susana Carvalho, Rebecca Chancellor, Chloe Cipoletta, Heather Cohen, Sandi R. Copeland, Katherine Corogenes, Ana Maria Costa, Charlotte Coupland, Bryan Curran, Darryl J. de Ruiter, Tobias Deschner, Paula Dieguez, Karsten Dierks, Emmanuel Dilambaka, Dervla Dowd, Andrew Dunn, Villard Ebot Egbe, Manfred Finckh, Barbara Fruth, Liza Gijanto, Yisa Ginath Yuh, Annemarie Goedmakers, Cameron Gokee, Rui Gomes Coelho, Alan H. Goodman, Anne-Céline Granjon, Vaughan Grimes, Cyril C. Grueter, Anne Haour, Daniela Hedwig, Veerle Hermans, R. Adriana Hernandez-Aguilar, Gottfried Hohmann, Inaoyom Imong, Kathryn J. Jeffery, Sorrel Jones, Jessica Junker, Parag Kadam, Mbangi Kambere, Mohamed Kambi, Ivonne Kienast, Kelly J. Knudson, Kevin E. Langergraber, Vincent Lapeyre, Juan Lapuente, Bradley Larson, Thea Lautenschläger, Petrus le Roux, Vera Leinert, Manuel Llana, Amanda Logan, Brynn Lowry, Tina Lüdecke, Giovanna Maretti, Sergio Marrocoli, Rumen Fernandez, Patricia J. McNeill, Amelia C. Meier, Paulina Meller, J. Cameron Monroe, David Morgan, Felix Mulindahabi, Mizuki Murai, Emily Neil, Sonia Nicholl, Protais Niyigaba, Emmanuelle Normand, Lucy Jayne Ormsby, Orume Diotoh, Liliana Pacheco, Alex Piel, Jodie Preece, Sebastien Regnaut, Francois G. Richard, Michael P. Richards, Aaron Rundus, Crickette Sanz, Volker Sommer, Matt Sponheimer, Teresa E. Steele, Fiona A. Stewart, Nikki Tagg, Luc Roscelin Tédonzong, Alexander Tickle, Lassané Toubga, Joost van Schijndel, Virginie Vergnes, Nadege Wangue Njomen, Erin G. Wessling, Jacob Willie, Roman M. Wittig, Kyle Yurkiw, Andrew M. Zipkin, Klaus Zuberbühler, Hjalmar S. Kühl, Christophe Boesch, Vicky M. Oelze   +112 more
doaj   +1 more source

Drelów, the 13th and latest meteorite fall in Poland—A typical L6 chondrite with shock veins

Meteoritics &Planetary Science, EarlyView.
Abstract On Tuesday, February 18, 2025, at 18:04:14 local time, residents of Poland observed a bright fireball registered by many Polish fireball stations belonging to the Skytinel Network established a few months before by Mateusz Żmija. Thus, the meteoroid's orbit, atmospheric trajectory, and the strewn field were calculated, and over 70 fragments ...
Addi Bischoff, Krzysztof Szopa, Jean‐Alix Barrat, Stig Bartel, Jasper Berndt, Tommaso Di Rocco, Dieter Heinlein, Stephan Klemme, Tomasz Krzykawski, Björn Lehnert, Agnieszka Mirek, Andreas Pack, Markus Patzek, Marie Pichotta, Maximilian P. Reitze, Stefan Ruchti, Philippe Schmitt‐Kopplin, Karl Wimmer, Mateusz Żmija   +18 more
wiley   +1 more source

Shape coexistence in neutron-rich Sr isotopes

, 2010
In this addendum we ask for beam time to perform Coulomb excitation of 98Sr in order to complete our program on the study of shape coexistence and evolution of collectivity in neutron rich strontium isotopes at N=60.
Clément, E, Görgen, A., Korten, W., Walle J. van de, [No Value]   +3 more
openaire   +1 more source