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摘要: 利用一维三温辐射磁流体力学程序对氖气和铝丝阵Z箍缩内爆过程中的能量转换过程进行了详细的数值研究，发现在内爆过程中离子和电子之间的碰撞能量交换是最主要的能量交换过程，其次是电子和光子之间的光电过程和轫致过程，而康普顿散射过程中的能量交换可以忽略不计；辐射出的x射线主要是在光电激发和光电复合过程中产生的，其次是在轫致辐射过程和康普顿散射过程中产生的.理论分析表明，辐射出的x射线能量可以超过，也可能小于其等离子体最大动能.数值模拟结果表明，在氖气Z箍缩中，辐射出的x射线能量没有超过其等离子体最大动能，而在铝丝阵列内爆中，辐射出的x射线能量超过了其等离子体最大动能，但小于磁压所做的功；在整个Z箍缩过程中欧姆加热能量是较小的.
Abstract: In this paper, the energy transformation processes in neon gas-puff pinch and Al wire-array pinch were studied numerically by means of one-dimensional three-temperature radiation magneto-hydrodynamic code. In the Z-pinch, the main energy transformation process is the Coulomb collision process between ions and electrons. The second one is the photoelectric process and bremsstrahlung radiation process. The energy transformation in the Compton scattering process can be neglected in the computation. The x-ray energy radiated from Z-pinch was produced mainly by the photoelectric excitation and recombination process, and also by the bremsstrahlung radiation process and Compton scattering process. Numerical analysis indicates that the x-ray radiation energy can be larger or smaller than the maximal plasma kinetic energy. In our numerical simulation, the radiation energy from neon gas-puff pinch is smaller than the maximal plasma kinetic energy, however, that from Al wire-array pinch is larger than the maximal plasma kinetic energy. They are all smaller than the work done by magnetic pressure. The electric energy consumed by Ohm heating is rather small.
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