Thermal conductivity and accommodation coefficient of spin-polarized atomic-hydrogen gas

1995 ◽  
Vol 52 (10) ◽  
pp. 7215-7229 ◽  
Author(s):  
M. J. Yoo ◽  
T. J. Greytak
Keyword(s):  
Thermal Conductivity ◽  
Atomic Hydrogen ◽  
Accommodation Coefficient ◽  
Hydrogen Gas ◽  
Spin Polarized

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

The problem of “thermal explosion” in spin-polarized atomic hydrogen gas

1984 ◽  
Vol 101 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Yu. Kagan ◽  
G.V. Shlyapnikov ◽  
I.A. Vartanyantz
Keyword(s):  
Thermal Explosion ◽  
Atomic Hydrogen ◽  
Hydrogen Gas ◽  
Spin Polarized

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

1984 ◽  
Vol 53 (3) ◽  
pp. 302-302 ◽  
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

Bose–Einstein condensation and heat capacity of spin-polarized atomic hydrogen

2010 ◽  
Vol 405 (9) ◽  
pp. 2171-2174 ◽  
Author(s):  
M.K. Al-Sugheir ◽  
A.S. Sandouqa ◽  
B.R. Joudeh ◽  
S. Al-Omari ◽  
M. Awawdeh ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Atomic Hydrogen ◽  
Einstein Condensation ◽  
Bose Einstein Condensation ◽  
Spin Polarized ◽  
Bose Einstein

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.

Theoretical and experimental behaviour of a thermal conductivity detecter for the determination of the ortho/para hydrogen composition of gas mixtures in the temperature-jump region

1978 ◽  
Vol 56 (13) ◽  
pp. 1817-1826 ◽  
Author(s):  
David N. Mitchell ◽  
Donald J. Le Roy
Keyword(s):  
Thermal Conductivity ◽  
Temperature Jump ◽  
Accommodation Coefficient ◽  
Additional Parameter ◽  
Pure Hydrogen ◽  
Para Hydrogen ◽  
Temperature Jumps ◽  
Differential Behaviour ◽  
Two Parameters

The theoretical characteristics of a thermistor type thermal conductivity detector were determined for gases in the range 1 to 30 Torr, and were tested experimentally for mixtures of ortho- and para-hydrogen in pure hydrogen and in dilute mixtures of hydrogen in helium. It was found that the detector could be treated as being spherically symmetric. For temperature-jumps of up to 100 K, the total heat transfer could be adequately explained by a simplified form of the Kennard temperature-jump theory, only two parameters being required, the radius of the thermistor and its accommodation coefficient. The differential behaviour, the sensitivity to changes in ortho/para composition, required an additional parameter, the apparent gas phase relaxation rate for rotational energy.

Magnetic trapping of spin-polarized atomic hydrogen

1987 ◽  
Vol 59 (6) ◽  
pp. 672-675 ◽  
Author(s):  
Harald F. Hess ◽  
Greg P. Kochanski ◽  
John M. Doyle ◽  
Naoto Masuhara ◽  
Daniel Kleppner ◽  
...  
Keyword(s):  
Atomic Hydrogen ◽  
Magnetic Trapping ◽  
Spin Polarized

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
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