The role of atomic oxygen in combustion

1946 ◽  
Vol 42 ◽  
pp. 292 ◽  
Author(s):  
A. G. Gaydon
Keyword(s):  
Atomic Oxygen

scholarly journals MANIFESTATION OF SOLAR ACTIVITY AND DYNAMICS OF THE ATMOSPHERE IN VARIATIONS OF 577.7 AND 630.0 nm ATMOSPHERIC EMISSIONS IN SOLAR CYCLE 24

2020 ◽  
Vol 6 (3) ◽  
pp. 81-85
Author(s):  
Aleksandr Mikhalev
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
Atomic Oxygen ◽  
Correlation Coefficients ◽  
Atmospheric Emissions ◽  
Annual Average ◽  
Solar Cycle 24 ◽  
Cycle 24 ◽  
Activity Indices

In the paper, variations of the night emission intensities in the 557.7 and 630 nm atomic oxygen lines [OI] in 2011–2019 have been analyzed. The analysis is based on data from the ISTP SB RAS Geophysical Observatory. The emission intensities are compared with atmospheric, solar, and geophysical parameters. High correlation coefficients between monthly average and annual average 630.0 nm emission intensities and solar activity indices F10.7 have been obtained. This suggests a key role of solar activity in variations of this emission in the period of interest. Variations of the 557.7 nm emission demonstrate to a greater extent the correlations of the stratospheric zonal wind (QBO.U30 index) with quasi-biennial oscillations. The causes of the weak dependence of the 557.7 nm emission intensity on solar activity in solar cycle 24 are discussed.

Role of atomic oxygen produced by ECR plasma in the oxidation of YBa2Cu3O7-Xthin films studied by in-situ resistivity measurement

1991 ◽  
Vol 4 (1S) ◽  
pp. S382-S384
Author(s):  
K Yamamoto ◽  
B M Liarson ◽  
C B Eom ◽  
R H Hammond ◽  
J C Bravman ◽  
...  
Keyword(s):  
Atomic Oxygen ◽  
Resistivity Measurement ◽  
Ecr Plasma

On the role of adsorbed atomic oxygen and CO2 in copper based methanol synthesis catalysts

1994 ◽  
Vol 25 (1-2) ◽  
pp. 1-10 ◽  
Author(s):  
Martin Muhler ◽  
Eric T�rnqvist ◽  
Lars P. Nielsen ◽  
Bjerne S. Clausen ◽  
Henrik Tops�e
Keyword(s):  
Methanol Synthesis ◽  
Atomic Oxygen ◽  
Synthesis Catalysts ◽  
Methanol Synthesis Catalysts

Evidence of the Synergetic Role of Charged Species and Atomic Oxygen in the Molecular Etching of PTFE Surfaces for Hydrophobic Surface Synthesis†

Langmuir ◽  
2010 ◽  
Vol 26 (21) ◽  
pp. 16503-16509 ◽  
Author(s):  
Nicolas Vandencasteele ◽  
Bérangère Broze ◽  
Stéphanie Collette ◽  
Caroline De Vos ◽  
Pascal Viville ◽  
...  
Keyword(s):  
Atomic Oxygen ◽  
Hydrophobic Surface ◽  
Charged Species

scholarly journals Effect of simultaneous N2 collisions on atomic oxygen-induced polyimide erosion in sub-low Earth orbit: comparison of laboratory and SLATS data

2021 ◽  
Author(s):  
Kumiko Yokota ◽  
Masahito Tagawa ◽  
Yusuke Fujimoto ◽  
Wataru Ide ◽  
Yugo Kimoto ◽  
...  
Keyword(s):  
Atomic Oxygen ◽  
Collision Energy ◽  
Space Shuttle ◽  
Space Station ◽  
Low Earth Orbit ◽  
Experimental Results ◽  
Earth Orbit ◽  
Material Erosion ◽  
Low Altitude

AbstractThe role of N2 in the upper atmosphere on the atomic oxygen (AO)-induced erosion of polyimide in low Earth orbit (LEO) and sub-LEO is investigated through ground-based experiments and flight data. The experiment is performed by adding an Ar beam at the same collision energy as an undecomposed O2 component in the AO beam formed by laser detonation to simulate the physical effect of simultaneous N2 collision in sub-LEO. The Ar beam is added by the dual-pulsed supersonic valve-equipped laser-detonation system developed at Kobe University. The experimental results indicate that the erosion of polyimide in the laser-detonation system is promoted by the presence of O2 and Ar in the beam, corresponding to N2 in the sub-LEO. On-ground experimental results are compared with in-orbit AO measurements. Previous space shuttle, international space station-based exposure experiments, as well as the world’s first real-time sub-LEO material erosion data aboard a super low altitude test satellite (SLATS) orbiting at an altitude of 216.8 km are presented. The SLATS data suggests the presence of an acceleration effect by N2 collision on AO-induced polyimide erosion, as predicted by ground-based experiments.

The leading role of atomic oxygen in the collocation of elves and hydroxyl nightglow in the low-latitude mesosphere

2017 ◽  
Vol 122 (5) ◽  
pp. 5550-5567 ◽  
Author(s):  
Y. J. Wu ◽  
E. Williams ◽  
S. C. Chang ◽  
J. K. Chou ◽  
R. R. Hsu ◽  
...  
Keyword(s):  
Atomic Oxygen ◽  
Low Latitude ◽  
Leading Role

Fundamental mechanisms of oxygen plasma-induced damage of ultralow-k organosilicate materials: The role of thermal P3 atomic oxygen

2009 ◽  
Vol 94 (20) ◽  
pp. 204102 ◽  
Author(s):  
Mrunalkumar Chaudhari ◽  
Jincheng Du ◽  
Swayambhu Behera ◽  
Sudha Manandhar ◽  
Sneha Gaddam ◽  
...  
Keyword(s):  
Atomic Oxygen ◽  
Oxygen Plasma ◽  
Organosilicate Materials
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