Results 11 to 20 of about 41,533 (292)

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

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

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

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

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

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

The possibility for gamma and UV radiation detection based on electrical breakdown time delay measurement in krypton and xenon filled diodes [PDF]

open access: yesNuclear Technology and Radiation Protection, 2021
The paper presents results of electrical breakdown time delay mean value t¯d as a function of relaxation time τ (memory curve) for krypton and xenon-filled diodes at 270 Pa pressure.
Pejović Milić M.   +2 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

Influence of the characteristics of the working fluids of an electric jet engine on the energy and design parameters of a space vehicle during launch into geostationary orbit [PDF]

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
This paper examines the use of electric propulsion engines using krypton as the propellant for launching payloads into geostationary orbit. Key aspects of using electric propulsion engines using xenon and krypton as propellants are presented.
A. V. Kolesov, V. V. Salmin
doaj   +1 more source

Secondary scintillation yield in pure krypton

open access: yesPhysics Letters B, 2022
The absolute secondary scintillation yield is of paramount importance for modelling dual-phase or high-pressure gas detectors, to be used in contemporary and in future rare event detection experiments.
R.D.P. Mano   +3 more
doaj   +1 more source

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