强激光与粒子束, 2005, 17 (6): 901, 网络出版: 2006-04-28
丝阵靶箍缩等离子体软X射线辐射能谱研究
Dynamics of soft X-ray radiation spectra of imploding wire arrays on the S-300 pulsed power generator
摘要
在S-300装置上研究了丝阵靶Z箍缩等离子体的软X射线辐射的动态过程.利用多通道X射线谱仪在50~2 000 eV范围内测量了丝阵靶内爆等离子体X射线辐射谱,辐射主要位于60~220 eV谱段.辐射谱可用温度为40~50 eV的Planck黑体谱近似描述.在能量高于500 eV的谱段,辐射谱与Planck黑体谱有较大的偏离.这主要是因为等离子体热斑的出现、在1.5~2 keV范围内线谱的存在和加速电子轫致辐射的结果.
Abstract
The dynamics of radiation spectra of fast Z-pinch plasmas was studied on the S—300 machine. By means of the polychromator APCH—10, X-ray spectra of imploding wire arrays were measured in the range of 50~1 500 eV. The main part of the radiation power falls at the spectral interval 60~220 eV. The radiation spectrum is described by the Planckian-spectrum with the “black-body” temperature of 40~50 eV. For the part of radiation with more than 500 eV energy of quanta, remarkable deviation from the Planckian-spectrum is observed. The deviation seems to be the result of the appearance of hot plasma spots, existence of characteristic spectral lines in the range of 1.5~2 keV, and bremsstrahlung losses of the accelerated electrons.
蔡红春, Chernenko A S, Korolev V D, Ustroev G I, Ivanov M l. 丝阵靶箍缩等离子体软X射线辐射能谱研究[J]. 强激光与粒子束, 2005, 17(6): 901. CAI Hong-chun, Chernenko A S, Korolev V D, Ustroev G I, Ivanov M I. Dynamics of soft X-ray radiation spectra of imploding wire arrays on the S-300 pulsed power generator[J]. High Power Laser and Particle Beams, 2005, 17(6): 901.