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Energy deposition of relativistic electrons in a hot super-compressed plasma

Published online by Cambridge University Press:  16 December 2005

TONG-CHENG WU ,
XI-JUN QIU  and
ZHI-YUAN ZHU
TONG-CHENG WU
Affiliation:
Department of Physics, School of Science, Shanghai University, Shanghai 200436, People's Republic of China (wu_tongchen@yahoo.com.cn)
XI-JUN QIU
Affiliation:
Department of Physics, School of Science, Shanghai University, Shanghai 200436, People's Republic of China (wu_tongchen@yahoo.com.cn)
ZHI-YUAN ZHU
Affiliation:
Shanghai Institute of Nuclear Research, Chinese Academy of Science, Shanghai 201800, People's Republic of China
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Abstract

The relativistic modified formula for the energy loss of the relativistic electron beam due to binary electron–electron collisions is obtained. Another important energy loss mechanism, the excitation of Langmuir collective plasma oscillation, is also treated within the relativistic framework. Then the relevant physics parameters in the fast-ignitor scenario, including the continuous winded range, the maximum penetration depth and the stopping time, have been calculated. The results obtained are much better than those from non-relativistic cases and even partially relativistic modified theories. Thus, we re-examine theoretically the possibility of igniting hot spots in a super-compressed deuterium–tritium plasma.

Type
Letter to the Editor
Information
Journal of Plasma Physics , Volume 72 , Issue 2 , April 2006 , pp. 153 - 158
Copyright
2005 Cambridge University Press

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