Results 11 to 20 of about 47,532 (349)

The world of krypton revisited [PDF]

open access: yesNature Chemistry, 2016
Matic Lozinsek and Gary J. Schrobilgen consider krypton — namesake of Superman's home planet — its superoxidant compounds, and their roles in coaxing elements into their highest oxidation states.
Matic Lozinšek, Gary J. Schrobilgen
openaire   +3 more sources

Operation Analysis of PandaX-4T Ultra-High Purity Xenon Cryogenic Distillation System for Removal of Krypton

open access: yesShanghai Jiaotong Daxue xuebao, 2021
Based on the McCabe-Thiele (M-T) method and the conservation of mass and energy, the PandaX-4T collaboration group designs an efficient cryogenic distillation system to reduce the mole fraction of krypton in commercial xenon from 5×10-7 to 1 ...
YAN Rui, WANG Zhou, CUI Xiangyi, JU Yonglin, SHA Haidong, LI Shuaijie, HUANG Peiyao, WANG Xiuli
doaj   +1 more source

Multiple Sequential Ionization of Valence n = 4 Shell of Krypton by Intense Femtosecond XUV Pulses

open access: yesAtoms, 2020
Sequential photoionization of krypton by intense extreme ultraviolet femtosecond pulses is studied theoretically for the photon energies below the 3d excitation threshold.
Elena V. Gryzlova   +5 more
doaj   +1 more source

On the interference of Kr during carbon isotope analysis of methane using continuous-flow combustion–isotope ratio mass spectrometry [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
Stable carbon isotope analysis of methane (δ13C of CH4) on atmospheric samples is one key method to constrain the current and past atmospheric CH4 budget.
J. Schmitt   +9 more
doaj   +1 more source

Advancement of radioactive material removal system by silver zeolite (Quantitative evaluation of noble gas adsorption characteristics by XeA and construction of noble gas adsorption system)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
In nuclear power plants, measures against radioactive noble gases are required. Until now, special activated carbon that easily adsorbs noble gases has been used in some nuclear facilities. However, activated carbon has a small adsorption capacity and is
Toshiki KOBAYASHI   +7 more
doaj   +1 more source

Krypton assay in xenon at the ppq level using a gas chromatographic system and mass spectrometer [PDF]

open access: yes, 2014
We have developed a new method to measure krypton traces in xenon at unprecedented low concentrations. This is a mandatory task for many near-future low-background particle physics detectors.
Lindemann, Sebastian, Simgen, Hardy
core   +2 more sources

High-Pressure Reactivity of Kr and F2—Stabilization of Krypton in the +4 Oxidation State

open access: yesCrystals, 2017
Since the synthesis of the first krypton compound, several other Kr-bearing connections have been obtained. However, in all of them krypton adopts the +2 oxidation state, in contrast to xenon which forms numerous compounds with an oxidation state as high
Dominik Kurzydłowski   +3 more
doaj   +1 more source

Clathration of Volatiles in the Solar Nebula and Implications for the Origin of Titan's atmosphere [PDF]

open access: yes, 2008
We describe a scenario of Titan's formation matching the constraints imposed by its current atmospheric composition. Assuming that the abundances of all elements, including oxygen, are solar in the outer nebula, we show that the icy planetesimals were ...
Alibert, Yann   +10 more
core   +2 more sources

Runaway electrons during subnanosecond breakdowns in high-pressure gases

open access: yesHigh Voltage, 2016
The parameters of runaway electrons produced in nanosecond high-voltage discharges in different gases (air, nitrogen, sulphur hexafluoride, krypton, argon, methane, neon, hydrogen, helium) at atmospheric and higher pressure were studied.
Victor F. Tarasenko   +3 more
doaj   +1 more source

Automated Sampling System for Monitoring 85Kr in Air

open access: yesAtmosphere, 2023
Radioactive krypton-85 (85Kr) gas, a chemically inert and non-proliferation indicator, is derived from fission products. Its detection relies on the Budesamt für Strahlenschutz–Institute of Atmospheric Radioactivity (BfS-IAR) method, which necessitated ...
Hyemi Cha   +4 more
doaj   +1 more source

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