Feasibility study of ICF ignition by swift heavy ions irradiation
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摘要: 采用蒙特卡罗方法计算了低温下C,Si,Ar,Au和U等多种重粒子在等物质的量氘氚等离子体密度1000 g/cm3、热斑直径50 m中的电子能量损失，不同点火形式下入射能量和作用时间,以及燃料约束时间为20 ps条件下的束流强度。通过对数据的分析研究了这些重粒子辐照实现氘、氚燃料快点火的可能性。结果表明，重粒子束流加热等离子体实现快点火理论上可行，而且有一定的优势；较重的离子加热聚变等离子体的效果更好。重粒子束流加热等离子体到聚变温度需要的束流强度在MA左右；单个粒子的能量在GeV以上；相互作用时间为ps以下。Abstract: The interaction physics between energetic particle and plasma are introduced. The energy loss and energy needed by single particle and pass through time on energetic C, Si, Ar, Au and U in equimolar DT plasma at 1000 g/cm3 in density and 50 m in diameter and room temperature were calculated by Monte Carlo method. The feasibility of ICF ignition by swift heavy ions irradiation were proved. In theory, heavier ion mass ensures better ICF ignition. The heavy ions beam intensity and single ion energy needed by ignition are about MA and over GeV, respectively. The duration is several picoseconds.
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Key words:
- plasma physics /
- interaction /
- Monte Carlo /
- DT /
- heating
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