Extinction phenomena study

The counterflow configuration has been extensively utilized to provide benchmark experimental data for the study of stretched flame phenomena and the modeling of turbulent flames through the concept of laminar flamelets. Global flame properties of a fuel/oxidizer mixture obtained using this configuration, such as laminar flame speed and extinction stretch rate, have also been widely used as target responses for the development, validation, and optimization of a detailed reaction mechanism. In particular, extinction stretch rate represents a kinetics-affected phenomenon and characterizes the interaction between a characteristic flame time and a characteristic flow time. Furthermore, the study of extinction phenomena is of fundamental and practical importance in the field of combustion, and is closely related to the areas of safety, fire suppression, and control of combustion processes. 

In an external magnetic field all matter becomes optically active. This observation was first made by Faraday in 1845 the magnetically induced rotation of the plane of polarized light is therefore referred to as the Faraday effect. In recent years, the common mode of study of this phenomenon has been the measurement of magnetic circular dichroism (MCD). Similarly to natural circular dichroism, magnetic circular dichroism is defined as the difference Af = fi, - of the extinction coefficients for left-handed and right-... 

The possibility of observing the outburst of Supernovae at the remote Galaxy regions, invisible within optical band because of interstellar extinction using thermal IR-radiation of interstellar dust heated by Supernova outburst is discussed in this paper. The investigation of this phenomenon by means of cooled IR-telescopes will allow the Supernova outburst parameters to be determined and the characteristics of the interstellar dust distribution to be studied. The similar effects can be detected in the vicinities of the well-known remnants of Supernovae, in particular, near Tycho Brahe and Cassiopeia A Supernovae. 

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