Results 21 to 30 of about 339,601 (336)

Solubility models of CH4, CO2, and noble gases and their geological applications

open access: yesJournal of Natural Gas Geoscience, 2023
Solubility models for CH4, CO2, and noble gases are widely used in Earth Sciences, playing pivotal roles in the study of homogenization pressure of inclusions, paleoclimate variation, gas migration and accumulation, formation of helium-rich gas plays ...
Xiangrui Chen   +3 more
doaj   +1 more source

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

Calibration of pressure-dependent sensitivity and discrimination in Nier-type noble gas ion sources [PDF]

open access: yes, 2000
The efficiency of many noble gas mass spectrometers to ionize gas species is known to be a function of the pressure of gas in the spectrometer. This work shows how the half plate voltage for maximum He or Ar signal depends on the spectrometer pressure ...
Burnard, P. G., Farley, K. 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

High pressure operation of the triple-GEM detector in pure Ne, Ar and Xe [PDF]

open access: yes, 2001
We study the performance of the triple-GEM (Gas Electron Multiplier) detector in pure noble gases Ne, Ar and Xe, at different pressures varying from 1 to 10 atm.
A Bondar   +7 more
core   +3 more sources

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

Geochemical Characteristics and Gas Source Contributions of Noble Gases of the Sulige Large Tight Gas Field of Upper Paleozoic in Ordos Basin, China

open access: yesFrontiers in Earth Science, 2022
Tight gas is the fastest developing unconventional natural gas resource, becoming the principal part for gas reserves and production growth in China. The Sulige gas field is the largest gas field and also the typical low porosity and low permeability ...
Wang Xiaobo   +18 more
doaj   +1 more source

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