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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Patent•
25 Nov 1977
TL;DR: A high pressure electric arc tube discharge lamp utilizing low power input is described in this paper, where the arc tube is of isothermal design and the electrode spacing is less than 20 mm and the arc is electrode-stabilized.
Abstract: A high pressure electric arc tube discharge lamp utilizing low power input.he electrode spacing is less than 20 mm and the arc is electrode-stabilized. The arc tube is of isothermal design. The gas fill of the lamp contains a mixture of metal (i) iodides or (ii) iodides and bromides. The metal halides must include at least the halides of sodium and tin. Mercury is preferred as the buffer gas. When operating, the lamp has a low-color temperature, a luminous efficacy of 80 lms/W and a color-rendering index of about 75. It is suitable for use in interior lighting.
36 citations
TL;DR: The resolution of the resonances increased by a factor of 2 as K increased from 1 to 6.
36 citations
TL;DR: The main results concerning lineshape analysis on ν1 and ν3 water vapor lines in the region around 3μm Narrow-bandwidth radiation used in this experiment was produced by difference-frequency generation in a periodically poled crystal between two near-infrared solid state lasers as discussed by the authors.
36 citations
Patent•
26 May 2000TL;DR: A pulsed detonation engine wave rotor apparatus and method of using a pressure wave to compress a buffer gas disposed within the engine flow passages is described in this paper, where the high pressure buffer gas is routed out of the wave rotor and subsequently reintroduced to the rotor to discharge and scavenge the latter stages of the combustion gas remaining under the engine's flow passages.
Abstract: A pulsed detonation engine wave rotor apparatus and method of using a pressure wave to compress a buffer gas disposed within the engine flow passages. The high pressure buffer gas is routed out of the wave rotor and subsequently reintroduced to the wave rotor to discharge and scavenge the latter stages of the combustion gas remaining under the engine flow passages.
36 citations
TL;DR: In this article, the authors measured the parameters for cesium (Cs) in the presence of Xe, N2, and H4e perturber gases at densities up to 10 amagats.
Abstract: The production of hyperpolarized gases by spin-exchange optical pumping (SEOP) requires exact knowledge of the alkali metal’s D1 absorption profile and the degree to which it is broadened and shifted by varying buffer gas composition and pressure. We have measured these parameters for cesium (Cs) in the presence of Xe, N2, and H4e perturber gases at densities up to 10 amagats. The effects of these gases are important as Cs is attracting increasing interest for SEOP applications. Our measurements were made using simple white-light illumination of the Cs vapor while characterizing the D1 (6S1/2 to 6P1/2) and D2 (6S1/2 to 6P3/2) resonances using a high-resolution optical spectrometer. For the Cs D1 resonance at T=120 °C, we report shifts from the 894.59 nm vacuum wavelength caused by H3e, H4e, N2, and Xe of −0.017±0.003, −0.013±0.002, 0.026±0.002, and 0.029±0.002 nm/amagat. We also report the shifts for the D2 resonance as well as pressure broadening coefficients for both resonances.
36 citations