Topic
Buffer gas
About: Buffer gas is a research topic. Over the lifetime, 3565 publications have been published within this topic receiving 47283 citations.
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TL;DR: In this paper, the authors demonstrate a cryogenic buffer-gas cooling of gas-phase methyltrioxorhenium (MTO) molecules with a rotational temperature of approximately 6~K by laser ablation.
Abstract: We demonstrate cryogenic buffer-gas cooling of gas-phase methyltrioxorhenium (MTO). This molecule is closely related to chiral organometallic molecules where the parity-violating energy differences between enantiomers may be measurable. The molecules are produced with a rotational temperature of approximately 6~K by laser ablation of an MTO pellet inside a cryogenic helium buffer gas cell. Facilitated by the low temperature, we demonstrate absorption spectroscopy of the 10.2~$\mu$m antisymmetric Re=O stretching mode of MTO with a resolution of 8~MHz and a frequency accuracy of 30~MHz. We partially resolve the hyperfine structure and measure the nuclear quadrupole coupling of the excited vibrational state.
15 citations
Patent•
25 Sep 2015
TL;DR: In this article, an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/G in a skeleton, surface or pore is described.
Abstract: The present invention relates to a nitrogen adsorbent having nitrogen selective adsorptivity by including an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/g in a skeleton, surface or pore; and use thereof, such as a device separating nitrogen from a gas mixture containing nitrogen and methane, a pressure swing adsorption separation device and a temperature swing adsorption separation device for separating nitrogen provided, a method for separating nitrogen and methane from a gas mixture containing nitrogen and methane, a device for separating nitrogen, oxygen or argon, a method for separating nitrogen, oxygen or argon from a gas mixture containing nitrogen, oxygen or argon, and a method for preparing nitrogen or high purity inert gas all separated from a gas mixture containing nitrogen and inert gas.
15 citations
TL;DR: In this article, magnetron plasma discharges were generated from neon, argon, krypton and xenon gases in DC and mid-frequency pulsed-DC modes with both silver and molybdenum cathodes.
Abstract: Argon is the process gas of choice for most magnetron sputtering applications due to its large atomic mass, inert chemistry, and relatively low cost. Other inert gases are available for use in sputtering deposition that have varying mass and hence different momentum behaviour during ion bombardment of solid surfaces — affecting sputter yield, particle implantation and incorporation of process gas into deposited films. The plasma discharges generated from these gases vary in terms of the nature and energy of species incident at both target and substrate. In particular, the contribution from energetic neutrals varies as a consequence of the atomic mass of the process gas in comparison to the target material to be sputtered. Magnetron plasma discharges were generated from neon, argon, krypton and xenon gases in DC and mid-frequency pulsed-DC modes with both silver and molybdenum cathodes. The electrical characteristics, such as potential and current at the target and substrate were measured and compared. Thin metallic films were then deposited and analysed in terms of structure; mechanical, optical and electrical properties; and process gas incorporation. The data generated is used to establish the relationship between process gas species, plasma discharge characteristics of those gases, and the subsequent growth and properties of deposited coatings.
15 citations
TL;DR: In this paper, the sub-natural width N-type resonance in a Λ-system, on the D2 line of Cs atoms, was studied for the first time in the presence of a buffer gas (neon) and the radiations of two continuous narrow-band diode lasers.
Abstract: The sub-natural width N-type resonance in a Λ-system, on the D2 line of Cs atoms is studied for the first time in the presence of a buffer gas (neon) and the radiations of two continuous narrow-band diode lasers. A L = 1 cm long cell is used to investigate the N-type process. The N-type resonance in a magnetic field for 133Cs atoms is shown to split into seven or eight components, depending on the magnetic field and laser radiation directions. The results obtained indicate that the levels Fg = 3, 4 are the initial and final ones in the N-resonance formation. The experimental results with magnetic field agree well with theoretical descriptions.
15 citations
Patent•
18 Mar 2002
TL;DR: In this paper, a gas-discharge panel which is drivable at high speed by low drive voltage while write errors in the write period hardly occurs and its manufacturing method are disclosed.
Abstract: A gas-discharge panel which is drivable at high speed by low drive voltage while write errors in the write period hardly occurs and its manufacturing method are disclosed. An auxiliary gas containing at least one gas selected from a carbon dioxide gas, steam, an oxygen gas, and a nitrogen gas is fed into a discharge space (30) of a gas-discharge panel evacuated to a vacuum to a degree such that the pressure of the residual gas is 0.02 mPa or less, and thereafter an He-Xe or Ne-Xe rare gas (discharge gas) is fed. If a carbon dioxide gas is mixed, the amount of auxiliary gas fed into the discharge space (30) is set in consideration of both the discharge start voltage and electron emission power so that the partial pressure of the auxiliary gas is between 0.05 and 0.5 mPa.
15 citations