Quasi-monoenergetic ion generation by hole-boring radiation pressure acceleration in inhomogeneous plasmas using tailored laser pulses
Quasi-monoenergetic ion generation by hole-boring radiation pressure acceleration in inhomogeneous plasmas using tailored laser pulses
复制标题
使用定制激光脉冲在非均匀等离子体中通过钻孔辐射压力加速产生准单能离子
DOI：
10.1063/1.4861339
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发表时间：
2014-01
影响因子：
2.2
通讯作者：
Shen, B. F.
中科院分区：
文献类型：
--
作者：
Sheng, Z. M.;Mulser, P.;Yu, W.;Shen, B. F.
提出了利用时间剪裁的强激光脉冲产生高注量准单能离子束，在非均匀过密等离子体中实现激光稳速打孔。对于任意的等离子体密度分布，这种激光脉冲的一般时间轮廓被制定。以密度呈指数增长的预压缩氘氚聚变靶为例，给出了稳态打孔的匹配激光轮廓，并通过粒子模拟进行了数值验证。此外，我们建议实现快速点火的原位打孔加速离子使用定制的激光脉冲。模拟结果表明，有效的能量通量，转换效率，能量扩散，和准直的产生的离子束可以显着改善相比，那些发现与非定制的激光轮廓。对于面密度为1.5gcm-2的聚变燃料，模拟结果表明，该方法有望实现聚变堆的高效率。
It is proposed that laser hole-boring at a steady speed in inhomogeneous overdense plasma can be realized by the use of temporally tailored intense laser pulses, producing high-fluence quasi-monoenergetic ion beams. A general temporal profile of such laser pulses is formulated for arbitrary plasma density distribution. As an example, for a precompressed deuterium-tritium fusion target with an exponentially increasing density profile, its matched laser profile for steady hole-boring is given theoretically and verified numerically by particle-in-cell simulations. Furthermore, we propose to achieve fast ignition by the in-situ hole-boring accelerated ions using a tailored laser pulse. Simulations show that the effective energy fluence, conversion efficiency, energy spread, and collimation of the resulting ion beam can be significantly improved as compared to those found with un-tailored laser profiles. For the fusion fuel with an areal density of 1.5 g cm–2, simulation indicates that it is promising to reali...
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影响因子：
2.2
作者：
X. Ribeyre;P. Nicolaï;G. Schurtz;M. Olazabal-Loumé;J. Breil;P. Maire;J. Feugeas;L. Hallo;V. Tikhonchuk
通讯作者：
X. Ribeyre;P. Nicolaï;G. Schurtz;M. Olazabal-Loumé;J. Breil;P. Maire;J. Feugeas;L. Hallo;V. Tikhonchuk
DOI：
10.1016/b978-0-08-025072-4.50009-5
发表时间：
1975
期刊：
--
影响因子：
--
作者：
通讯作者：
--
影响因子：
0.9
作者：
Foldes, I. B.;Szatmari, S.
通讯作者：
Szatmari, S.
影响因子：
2.2
作者：
C. Regan;T. Schlegel;V. Tikhonchuk;J. Honrubia;J. Feugeas;P. Nicolaï
通讯作者：
C. Regan;T. Schlegel;V. Tikhonchuk;J. Honrubia;J. Feugeas;P. Nicolaï
影响因子：
0.9
作者：
L. Yin;B. Albright;B. Hegelich;Juan C Fernández
通讯作者：
L. Yin;B. Albright;B. Hegelich;Juan C Fernández