Vibrational Excitation of Hydrogen via Recombinative Desorption of Atomic Hydrogen Gas on a Metal Surface

1988 ◽  
Vol 60 (4) ◽  
pp. 337-340 ◽  
Author(s):  
R. I. Hall ◽  
I. Čadež ◽  
M. Landau ◽  
F. Pichou ◽  
C. Schermann
Keyword(s):  
Metal Surface ◽  
Atomic Hydrogen ◽  
Vibrational Excitation ◽  
Hydrogen Gas

scholarly journals Atomic Hydrogen Gas Images of QSO Host Galaxies

2002 ◽  
Vol 199 ◽  
pp. 122-126
Author(s):  
J. Lim ◽  
P.T.P. Ho
Keyword(s):  
Atomic Hydrogen ◽  
Hydrogen Gas ◽  
Significant Fraction ◽  
Host Galaxies ◽  
Infrared Galaxies ◽  
Parent Population ◽  
Tidal Interactions ◽  
Ultraluminous Infrared Galaxies

We present the first neutral atomic hydrogen (HI) gas images of QSO host galaxies. The results come from our ongoing survey of all twenty-three QSOs at redshifts z < 0.07 visible from the VLA. Our images show tidal interactions in all of the QSO host galaxies detected in HI, even when no such interactions are clearly visible in the optical. The results are not consistent with the suggestion by Sanders et al. (1988a, 1988b) that ultraluminous infrared galaxies, the vast majority of which are later-stage mergers, are the parent population of a significant fraction of radio-quiet QSOs. Instead, our results suggest that QSOs reside in a wide variety of interacting environments.

Cryogenic 2 mm wave electron spin resonance spectrometer with application to atomic hydrogen gas below 100 mK

2004 ◽  
Vol 75 (1) ◽  
pp. 94-98 ◽  
Author(s):  
Sergei Vasilyev ◽  
Jarno Järvinen ◽  
Esa Tjukanoff ◽  
Alexander Kharitonov ◽  
Simo Jaakkola
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Atomic Hydrogen ◽  
Hydrogen Gas ◽  
Spin Resonance ◽  
Electron Spin Resonance Spectrometer

Three-body recombination in two-dimensional atomic hydrogen gas

2005 ◽  
Vol 72 (5) ◽  
Author(s):  
J. Järvinen ◽  
J. Ahokas ◽  
S. Jaakkola ◽  
S. Vasilyev
Keyword(s):  
Atomic Hydrogen ◽  
Hydrogen Gas ◽  
Two Dimensional ◽  
Three Body ◽  
Body Recombination

scholarly journals The Electrochemical Variation of a Kind of Protein Staining and Food Dye as a New Corrosion Inhibitor on Mild Steel in Acidic Medium

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Demet Özkır
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Metal Surface ◽  
Electrochemical Impedance ◽  
Measurement Techniques ◽  
Surface Characteristic ◽  
Hydrogen Gas ◽  
Food Dye ◽  
Atomic Force ◽  
Fast Green Fcf

In this study, the relevance of a food dye, namely, Fast Green-FCF (FG-FCF), was surveyed as a new inhibitor for mild steel in HCl solution. This effect was specified by electrochemical impedance spectroscopy (EIS), one of the most widely used measurement techniques. As a result of the increment of the inhibitor concentration, it was seen that the values ​​of polarization resistance increased and covered the metal surface of FG-FCF like a blanket. Tests endorse that the FG-FCF is chemically adsorbed on mild steel surface, according to the Langmuir isotherm. With surface characteristic analyses, such as field emission scanning electron microscope (FESEM) and atomic force microscope (AFM), it was further determined that the metal surface in HCl of FG-FCF was protected. By applying the hydrogen gas evolution technique, FG-FCF has been proven to provide the lowest surface area with all inhibited solutions from the blank due to its strong adsorption to the metal surface. Finally, it has been clarified that FG-FCF can be practically used as a good corrosion inhibitor for mild steel with the supported results.

scholarly journals The SFR Efficiency of HI Gas in the Outskirts of Star Forming Galaxies

2016 ◽  
Vol 11 (S321) ◽  
pp. 360-362
Author(s):  
Marc Rafelski
Keyword(s):  
Star Formation ◽  
Atomic Hydrogen ◽  
Rest Frame ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Hydrogen Gas ◽  
Star Forming ◽  
Uv Emission ◽  
Atomic Gas

AbstractIn order to understand the origin of the decreased star formation rate (SFR) efficiency of neutral atomic hydrogen gas measured in Damped Lyα Systems (DLAs) at z ~ 3, we measure the SFR efficiency of atomic gas at z ~ 1, z ~ 2, and z ~ 3 around star-forming galaxies. We create galaxy stacks in these three redshift bins, and measure the SFR efficiency by combining DLA absorber statistics with the observed rest-frame UV emission in the galaxies’ outskirts. We find that the SFR efficiency of Hi gas is ~ 3% of that predicted by the KS relation. We find no significant evolution in the SFR efficiency with redshift, although simulations and models predict a decreasing SFR efficiency with decreasing metallicity and thus with increasing redshift. We discuss possible explanations for this decreased efficiency without an evolution with redshift.

‘‘Helium jet’’ accommodator for the thermalization of atomic hydrogen gas

1992 ◽  
Vol 63 (4) ◽  
pp. 2220-2222 ◽  
Author(s):  
M. Mertig ◽  
A. V. Levkovitch ◽  
V. G. Luppov ◽  
Yu. K. Pilipenko
Keyword(s):  
Atomic Hydrogen ◽  
Hydrogen Gas ◽  
Helium Jet

Observation of Nuclear Spin Waves in Spin-Polarized Atomic Hydrogen Gas

1984 ◽  
Vol 52 (17) ◽  
pp. 1508-1511 ◽  
Author(s):  
B. R. Johnson ◽  
J. S. Denker ◽  
N. Bigelow ◽  
L. P. Lévy ◽  
J. H. Freed ◽  
...  
Keyword(s):  
Nuclear Spin ◽  
Atomic Hydrogen ◽  
Spin Waves ◽  
Hydrogen Gas ◽  
Spin Polarized

scholarly journals Elementary excitations of atomic hydrogen gas on liquid helium

1995 ◽  
Vol 207 (1-2) ◽  
pp. 105-108 ◽  
Author(s):  
M.W. Reynolds ◽  
G.V. Shlyapnikov
Keyword(s):  
Liquid Helium ◽  
Atomic Hydrogen ◽  
Hydrogen Gas ◽  
Elementary Excitations

scholarly journals Guiding and Trapping of Electron Spin Waves in Atomic Hydrogen Gas

2012 ◽  
Vol 108 (18) ◽  
Author(s):  
O. Vainio ◽  
J. Ahokas ◽  
S. Novotny ◽  
S. Sheludyakov ◽  
D. Zvezdov ◽  
...  
Keyword(s):  
Electron Spin ◽  
Atomic Hydrogen ◽  
Spin Waves ◽  
Hydrogen Gas
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