| Thomson scattering off a pair （electron-positron） plasma |
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| 引用本文： | 郑坚.Thomson scattering off a pair （electron-positron） plasma[J].中国物理 B,2006,15(5):1028-1034. |
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| 作者姓名： | 郑坚 |
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| 作者单位： | CAS Key Laboratory of Basic Plasma Physics, Department of Modern Physics,University of Science and
230026, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 10375064), and the
National High Technology Inertial Confinement Fusion. |
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| 摘 要： | Thomson scattering off a pair (electron--positron) plasma is
theoretically investigated in the collisionless and collisional
limits respectively. Our calculations show that the power spectrum of the
Thomson scattering off a collisionless pair plasma is just
proportional to the velocity distribution function of the
particles in the plasma. Collective modes in the plasma do not
have any effects on the Thomson scattering spectrum because of the
correlation between the negatively- and positively-charged particles.
In the collisional limit, the power spectrum of the Thomson
scattering presents three spikes: two peaks correspond to two
contra-propagating sound waves and one peak corresponds to an entropy
wave.
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| 关 键 词： | 等离子耦合 Thomson散射 动态形状因子 熵 |
| 收稿时间： | 2005-11-06 |
| 修稿时间： | 2005-11-062005-12-21 |
Thomson scattering off a pair (electron--positron) plasma |
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| Zheng Jian.Thomson scattering off a pair (electron--positron) plasma[J].Chinese Physics B,2006,15(5):1028-1034. |
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| Authors: | Zheng Jian |
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| Institution: | CAS Key Laboratory of Basic Plasma Physics, Department of Modern Physics,University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | Thomson scattering off a pair (electron--positron) plasma is
theoretically investigated in the collisionless and collisional
limits respectively. Our calculations show that the power spectrum of the
Thomson scattering off a collisionless pair plasma is just
proportional to the velocity distribution function of the
particles in the plasma. Collective modes in the plasma do not
have any effects on the Thomson scattering spectrum because of the
correlation between the negatively- and positively-charged particles.
In the collisional limit, the power spectrum of the Thomson
scattering presents three spikes: two peaks correspond to two
contra-propagating sound waves and one peak corresponds to an entropy
wave. |
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| Keywords: | pair plasma Thomson scattering dynamic form factor |
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