Impact of new measurements of oxygen collision-induced absorption on estimates of short-wave atmospheric absorption

2002 ◽  
Vol 128 (585) ◽  
pp. 2377-2396 ◽  
Author(s):  
J. C. S. Chagas ◽  
D. A. Newnham ◽  
K. M. Smith ◽  
K. P. Shine
Keyword(s):  
Short Wave ◽  
Atmospheric Absorption ◽  
Induced Absorption

scholarly journals Effects of improvements in near-infrared water vapour line intensities on short-wave atmospheric absorption

2001 ◽  
Vol 28 (12) ◽  
pp. 2401-2404
Author(s):  
Júlio C. S. Chagas ◽  
David A. Newnham ◽  
Kevin M. Smith ◽  
Keith P. Shine
Keyword(s):  
Water Vapour ◽  
Near Infrared ◽  
Short Wave ◽  
Atmospheric Absorption ◽  
Line Intensities

EFFECT OF HIGH PRESSURES ON THE INFRARED AND RED ATMOSPHERIC ABSORPTION BAND SYSTEMS OF OXYGEN

1963 ◽  
Vol 41 (12) ◽  
pp. 1991-2002 ◽  
Author(s):  
C. W. Cho ◽  
E. J. Allin ◽  
H. L. Welsh
Keyword(s):  
Absorption Band ◽  
Power Series ◽  
Absorption Coefficient ◽  
Magnetic Dipole ◽  
Total Pressure ◽  
High Pressures ◽  
Linear Term ◽  
Quadratic Term ◽  
Atmospheric Absorption ◽  
Induced Absorption

Absorption intensities in the 0–0 and 1–0 bands of the infrared [Formula: see text] and the 0–0 band of the red [Formula: see text] band systems of oxygen were measured in the pure gas in the range 50 to 150 atm and in O2–N2, O2–A, and O2–He mixtures up to 3000 atm total pressure at 25 °C. The integrated absorption coefficient of each band is expressed as a power series in ρO2 and ρf, the Amagat densities of oxygen and the foreign gas, respectively. The coefficient of the linear term AρO2 is a measure of the intrinsic (magnetic dipole) absorption of the O2 molecule; it is much greater in the red than in the infrared system. The quadratic term, BρO22, gives the induced absorption in O2–O2 pairs; B is about ten times greater in the infrared than in the red system. These results explain intensity anomalies which have been observed in condensed oxygen. Induction effects in O2–N2 and O2–A pairs are much smaller than in O2–O2 pairs, and scarcely observable in O2–He pairs. The significance of these results is discussed.

Some problems of objective-prism spectra classification

1966 ◽  
Vol 24 ◽  
pp. 51-52
Author(s):  
E. K. Kharadze ◽  
R. A. Bartaya
Keyword(s):  
Short Wave ◽  
High Quality ◽  
Stellar Spectra ◽  
Objective Prism

The unique 70-cm meniscus-type telescope of the Abastumani Astrophysical Observatory supplied with two objective prisms and the seeing conditions characteristic at Mount Kanobili (Abastumani) permit us to obtain stellar spectra of a high quality. No additional design to improve the “climate” immediately around the telescope itself is being applied. The dispersions and photographic magnitude limits are 160 and 660Å/mm, and 12–13, respectively. The short-wave end of spectra reaches 3500–3400Å.

THE INCREASING OF DATA TRANSFER NOISE IMMUNITY IN DEPARTMENTAL COMMUNICATION SYSTEMS OF SHORT-WAVE RANGE

2018 ◽  
pp. 7-19
Author(s):  
B. G. Shadrin ◽  
◽  
D. E. Zachateyskiy ◽  
V. A. Dvoryanchikov Dvoryanchikov ◽  
◽  
...  
Keyword(s):  
Communication Systems ◽  
Noise Immunity ◽  
Data Transfer ◽  
Short Wave ◽  
Wave Range
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