Results 21 to 30 of about 3,757,984 (333)

New Experimental Tools to Use Noble Gases as Artificial Tracers for Groundwater Flow

open access: yesFrontiers in Water, 2022
Labeling groundwater by injecting an artificial tracer is a standard and widely used method to study groundwater flow systems. Noble gases dissolved in groundwater are potentially ideal artificial tracers, as they are not subject to biogeochemical ...
Matthias S. Brennwald   +8 more
doaj   +1 more source

Investigating Fracture Network Deformation Using Noble Gas Release

open access: yesGeofluids, 2021
We investigate deformation mechanics of fracture networks in unsaturated fractured rocks from subsurface conventional detonation using dynamic noble gas measurements and changes in air permeability.
W. Payton Gardner   +2 more
doaj   +1 more source

Pathway to cryogen free production of hyperpolarized Krypton-83 and Xenon-129. [PDF]

open access: yesPLoS ONE, 2012
Hyperpolarized (hp) (129)Xe and hp (83)Kr for magnetic resonance imaging (MRI) are typically obtained through spin-exchange optical pumping (SEOP) in gas mixtures with dilute concentrations of the respective noble gas.
Joseph S Six   +4 more
doaj   +1 more source

Tracing the sources and evolution processes of shale gas by coupling stable (C, H) and noble gas isotopic compositions: Cases from Weiyuan and Changning in Sichuan Basin, China

open access: yesJournal of Natural Gas Science and Engineering, 2020
The source and thermal evolution history of organic matter for the Longmaxi shale are still debated. This study analyzed the molecular and stable carbon isotopic compositions of hydrocarbons (CH4, C2H6, and C3H8) and CO2 as well as the stable hydrogen ...
Chunhui Cao   +7 more
semanticscholar   +1 more source

Krypton isotopes and noble gas abundances in the coma of comet 67P/Churyumov-Gerasimenko [PDF]

open access: yesScience Advances, 2018
Noble gases in comet 67P/Churyumov-Gerasimenko indicate nonhomogenized protoplanetary disk material at its location of formation. The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis mass spectrometer Double Focusing Mass Spectrometer on board ...
M. Rubin   +26 more
semanticscholar   +1 more source

The nature and role of the gold-krypton interactions in small neutral gold clusters [PDF]

open access: yes, 2015
© 2015 American Chemical Society. We investigate the nature and role of krypton embedding in small neutral gold clusters. For some of these clusters, we observe a particular site-dependent character of the Kr binding that does not completely follow the ...
Benoit, David M., Mancera, Luis A.
core   +1 more source

The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature

open access: yesGeophysical Research Letters, 2023
The ocean's immense ability to store and release heat on centennial to millennial time scales modulates the impacts of climate perturbations. To gain a better understanding of past variations in mean ocean temperature (MOT), a noble gas‐based proxy ...
Frerk Pöppelmeier   +6 more
doaj   +1 more source

Noble‐Noble Strong Union: Gold at Its Best to Make a Bond with a Noble Gas Atom

open access: yesChemistryOpen, 2019
This Review presents the current status of the noble gas (Ng)‐noble metal chemistry, which began in 1977 with the detection of AuNe+ through mass spectroscopy and then grew from 2000 onwards; currently, the field is in a somewhat matured state.
S. Pan, G. Jana, G. Merino, P. Chattaraj
semanticscholar   +1 more source

Noble gas cluster ions

open access: yesEPJ Web of Conferences, 2018
In this work, a reaction mechanism of formation of noble gas (Ng) cluster ions has been theoretically investigated in detail. The kinetic studies of formation of Xe+Xe cluster in Xe, Ar+Ar cluster ions in Ar, and Ne+Ne cluster ions in Ne have been made ...
Kaya Yunus, Kalkan Yalçin, Veenhof Rob
doaj   +1 more source

Mineral Crushing Methods for Noble Gas Analyses of Fluid Inclusions

open access: yesGeofluids, 2023
Noble gases are frequently probed for investigating fluid inclusions in minerals to unravel rock-forming processes through time. Over the last decades, heating and crushing have been the two main methods applied for noble gas extraction from fluid ...
C. Wilske   +5 more
doaj   +1 more source

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