Starting from the exact solution of the Fokker-Planck equation, the slowing-down time tr is clearly defined and easily calculated for different types of particles. The advantage of the approach used here is that the final formula for the slowing-down time is given as a simple product between a slowly varying coefficient and a characteristic time τ dependent on the initial energy and plasma parameters through a simple analytical expression. Comparison of tr with the relaxation times previously obtained is reported.
Manservisi S., Molinari V.G. (1992). Slowing-down time of fast electrons in plasmas via the fokker-planck equation. NUCLEAR SCIENCE AND ENGINEERING, 112(4), 296-300 [10.13182/NSE92-A23979].
Slowing-down time of fast electrons in plasmas via the fokker-planck equation
Manservisi S.;Molinari V. G.
1992
Abstract
Starting from the exact solution of the Fokker-Planck equation, the slowing-down time tr is clearly defined and easily calculated for different types of particles. The advantage of the approach used here is that the final formula for the slowing-down time is given as a simple product between a slowly varying coefficient and a characteristic time τ dependent on the initial energy and plasma parameters through a simple analytical expression. Comparison of tr with the relaxation times previously obtained is reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
