Nonthermal electrons in the thick-target reverse-current model for hard X-ray bremsstrahlung

✍ Scribed by Yu. E. Litvinenko; B. V. Somov

• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 733 KB
• Volume: 131
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00151641

✦ Synopsis

The behaviour of the accelerated electrons escaping from a high-temperature source of primary energy in a solar flare is investigated. The direct current of fast electrons is supposed to be balanced by the reverse current of thermal electrons in the ambient colder plasma inside flare loops. The self-consistent kinetic problem is formulated; and the reverse-current electric field and the fast electron distribution function are found from its solution. The X-ray bremsstrahlung polarization is then calculated from the distribution function. The difference of results from those in the case of thermal runaway electrons (Diakonov and Somov, 1988) is discussed. The solutions with and without account of the affect of a reverse-current electric field are also compared. * Send offprint requests to B. V. Somov.