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arXiv 1409.6152physics.plasm-ph
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不同密度分布等离子体的质子阻止本领

Proton Stopping Power of Different Density Profile Plasmas

David Casas, Manuel D. Barriga-Carrasco, Alexander A. Andreev, Matthias Schnürer, Roberto Morales

摘要:

本文用自由电子阻止和束缚电子阻止的方法分析了部分电离等离子体的阻止本领。对于第一种情况,使用RPA介电函数,对于第二种情况,使用高、低弹丸速度公式的插值。本文用迭代法计算了离子束在等离子体中的动力学能量损失。阿贝尔反演也适用于当我们有一个径向对称的等离子体。最后,我们比较了我们的方法与两种等离子体。在第一种方法中,我们估计了由激光预脉冲产生的等离子体中的能量损失,其密度近似为分段函数。对于后者,假设径向电子密度,并从计算的侧点获得作为半径的函数的停止。在这两种情况下,观察到的密度分布的依赖性。

英文摘要:

In this work, the stopping power of a partially ionized plasma is analyzed by means of free electron stopping and bound electron stopping. For the first one, the RPA dielectric function is used, and for the latter one, an interpolation of high and low projectile velocity formulas is used. The dynamical energy loss of an ion beam inside a plasma is estimated by using an iterative scheme of calculation. The Abel inversion is also applied when we have a plasma with radial symmetry. Finally, we compare our methods with two kind of plasmas. In the first one, we estimate the energy loss in a plasma created by a laser prepulse, whose density is approximated by a piecewise function. For the latter one, a radial electron density is supposed and the stopping is obtained as function of radius from the calculated lateral points. In both cases, the dependence with the density profile is observed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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