Time-resolved measurement of a shock-driven plasma target for interaction experiments between heavy ions and plasmas
Time-resolved measurement of a shock-driven plasma target for interaction experiments between heavy ions and plasmas
复制标题
用于重离子与等离子体之间相互作用实验的冲击驱动等离子体目标的时间分辨测量
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Y. Oguri
中科院分区：
文献类型：
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作者：
K. Katagiri;J. Hasegawa;S. Nishinomiya;H. Ikagawa;Y. Oguri
为了观察非理想等离子体对重离子的阻止本领的非线性，我们计划使用10−100 keV的scinu射弹进行束-等离子体相互作用实验。 在相互作用实验中，利用冲击技术研制了一种非理想氢等离子体靶。时间分辨光谱测量确定的冲击等离子体的电子密度和温度的时间演变。这些数据表明，激波阵面后面的结构具有适当的空间和时间分布，可以用作目标。我们还评估了库仑耦合常数和电离度的时间演化在一个固定的位置，在那里的弹丸注入。我们讨论了非线性停止实验的可行性，通过评估预期从测量的等离子体参数的束-等离子体耦合常数。
To observe nonlinearity in the stopping power of a nonideal plasma for heavy ions, we are planning a beam-plasma interaction experiment using 10−100 keV∕u projectiles. For the interaction experiment, a nonideal hydrogen plasma target was developed by means of a shock technique. Time-resolved spectroscopic measurements determined the temporal evolution of the electron density and temperature of the shock plasma. These data revealed that the structure behind the shock front has an appropriate spatial and temporal distribution to be used as a target. We also evaluated the temporal evolution of the Coulomb coupling constant and the degree of ionization at a fixed position where the projectiles are injected. We discuss the feasibility of the nonlinear stopping experiment by evaluating the beam-plasma coupling constant expected from the measured plasma parameters.