EXPERIMENTAL AND THEORETICAL STUDY ON THE INFRARED EMISSION OF SOOT PARTICLES IN LUMINOUS FLAME

1970 ◽  
Author(s):  
Takeshi Kunitomo ◽  
Takashi Sato
Keyword(s):  
Theoretical Study ◽  
Infrared Emission ◽  
Soot Particles

Structural effects on the oxidation of soot particles by O2: Experimental and theoretical study

2013 ◽  
Vol 160 (9) ◽  
pp. 1812-1826 ◽  
Author(s):  
Abhijeet Raj ◽  
Seung Yeon Yang ◽  
Dongkyu Cha ◽  
Russell Tayouo ◽  
Suk Ho Chung
Keyword(s):  
Theoretical Study ◽  
Structural Effects ◽  
Soot Particles

DIMERIZATION OF POLYAROMATIC HYDROCARBON MOLECULES WITH FORMATION OF E-BRIDGE BOND: A THEORETICAL STUDY

2020 ◽  
Author(s):  
A. S. Savchenkova ◽  
◽  
A. S. Semenikhin ◽  
I. V. Chechet ◽  
S. G. Matveev ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Soot Formation ◽  
Polyaromatic Hydrocarbons ◽  
Combustion Engines ◽  
Polyaromatic Hydrocarbon ◽  
Subsequent Growth ◽  
Bridge Bond ◽  
Soot Particles ◽  
Fuel Burning ◽  
Hydrocarbon Molecules

In combustion engines and other fuel-burning devices, during the combustion of hydrocarbon fuels at a temperature of 1000-1400 K, soot is actively formed, deposited on the cold surfaces of the devices, which reduces their service life. At present, much attention is paid to the problems of controlling the amount and size of soot particles formed during combustion. However, the mechanism of soot formation has not yet been fully understood. It is assumed that under combustion conditions, young soot particles are formed by nucleation of aromatic and polyaromatic hydrocarbons (PAHs) with subsequent growth of particles due to the addition of new molecules.

Tuning the optical properties of thiophene oligomers toward infrared emission: A theoretical study

2001 ◽  
Vol 115 (10) ◽  
pp. 4919-4923 ◽  
Author(s):  
G. Daminelli ◽  
J. Widany ◽  
A. Di Carlo ◽  
P. Lugli
Keyword(s):  
Optical Properties ◽  
Theoretical Study ◽  
Infrared Emission

Infrared Emission and Theoretical Study of Carbon Monoxide Adsorbed on Alumina-Supported Rh, Ir, and Pt Catalysts

2006 ◽  
Vol 110 (5) ◽  
pp. 1817-1823 ◽  
Author(s):  
Tamás I. Korányi ◽  
Judith Mihály ◽  
Éva Pfeifer ◽  
Csaba Németh ◽  
Tatiana Yuzhakova ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Theoretical Study ◽  
Infrared Emission ◽  
Pt Catalysts

Detection and Characterization of earth-like Planets

1997 ◽  
Vol 161 ◽  
pp. 299-311 ◽  
Author(s):  
Jean Marie Mariotti ◽  
Alain Léger ◽  
Bertrand Mennesson ◽  
Marc Ollivier
Keyword(s):  
Direct Detection ◽  
Contrast Ratio ◽  
Angular Size ◽  
Physical Nature ◽  
Major Axis ◽  
Infrared Emission ◽  
Space Technology ◽  
Semi Major Axis ◽  
Earth Like Planets ◽  
Visible Wavelengths

AbstractIndirect methods of detection of exo-planets (by radial velocity, astrometry, occultations,...) have revealed recently the first cases of exo-planets, and will in the near future expand our knowledge of these systems. They will provide statistical informations on the dynamical parameters: semi-major axis, eccentricities, inclinations,... But the physical nature of these planets will remain mostly unknown. Only for the larger ones (exo-Jupiters), an estimate of the mass will be accessible. To characterize in more details Earth-like exo-planets, direct detection (i.e., direct observation of photons from the planet) is required. This is a much more challenging observational program. The exo-planets are extremely faint with respect to their star: the contrast ratio is about 10−10at visible wavelengths. Also the angular size of the apparent orbit is small, typically 0.1 second of arc. While the first point calls for observations in the infrared (where the contrast goes up to 10−7) and with a coronograph, the latter implies using an interferometer. Several space projects combining these techniques have been recently proposed. They aim at surveying a few hundreds of nearby single solar-like stars in search for Earth-like planets, and at performing a low resolution spectroscopic analysis of their infrared emission in order to reveal the presence in the atmosphere of the planet of CO H2O and O3. The latter is a good tracer of the presence of oxygen which could be, like on our Earth, released by biological activity. Although extremely ambitious, these projects could be realized using space technology either already available or in development for others missions. They could be built and launched during the first decades on the next century.

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