Quasi-monoenergetic spectra from reactions in a beam-target plasma
Quasi-monoenergetic spectra from reactions in a beam-target plasma
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束靶等离子体中反应的准单能光谱
DOI：
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发表时间：
2012
期刊：
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通讯作者：
J. Chittenden
中科院分区：
文献类型：
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作者：
B. Appelbe;J. Chittenden
我们研究了当光束与等离子体靶相互作用时发生的两体（m1+m2→m3+m4）聚变反应的运动学。导出了产物粒子能谱的精确表达式。推导结果表明，其中一种产物的能量存在各向异性下限。在一定的束流能量范围内，这个极限抑制了沿束流方向发射的粒子能谱的热展宽。确定了发生最大抑制的光束能量。在这种光束能量下，光谱的宽度可以比热等离子体产生的光谱窄几个数量级。结果表明，高温等离子体靶可以产生高单能的聚变产物粒子束。
We investigate the kinematics of two-body (m1+m2→m3+m4) fusion reactions occurring when a beam interacts with a plasma target. An exact expression for the energy spectrum of the product particles is derived. The derivation shows that there is an anisotropic lower limit on the energy of one of the product species. There is a range of beam energies for which this limit acts to suppress thermal broadening of the energy spectra of the particles emitted in the beam direction. The beam energy at which maximum suppression occurs is identified. At this beam energy, the width of the spectrum can be up to a couple of orders of magnitude narrower than the spectrum produced by a thermal plasma. The results indicate that the highly monoenergetic beams of fusion product particles may be produced from hot plasma targets.