| 超短超强激光与固体靶相互作用中发射质子的截止能量估算 |
| |
| 引用本文： | 秦孝尊,洪伟,田成林,唐翠明,何颖玲,张继彦,江少恩,谷渝秋,丁永坤. 超短超强激光与固体靶相互作用中发射质子的截止能量估算[J]. 强激光与粒子束, 2008, 20(8) |
| |
| 作者姓名： | 秦孝尊 洪伟 田成林 唐翠明 何颖玲 张继彦 江少恩 谷渝秋 丁永坤 |
| |
| 作者单位： | 国防科学技术大学理学院,长沙,410073;中国工程物理研究院激光聚变研究中心,四川,绵阳,621900;中国工程物理研究院激光聚变研究中心,四川,绵阳,621900;国防科学技术大学理学院,长沙,410073 |
| |
| 基金项目： | 中国工程物理研究院创新项目，国家自然科学基金，国家重点实验室基金 |
| |
| 摘 要： | 根据超短超强激光与固体靶相互作用中质子靶前表面加速和靶后表面加速两种机制，对在SILEX-I激光器上进行的质子加速实验中获得的质子最大截止能量进行了估算，认为实验中质子产生的主要机制是靶后表面加速。同时结果表明：对该装置的实验条件，靶前表面加速机制可以产生质子的最大能量约为2 MeV；靶后表面加速机制可以产生的质子的最大能量约11 MeV。另外用Multi2005程序计算了激光器信噪比对靶后表面加速机制的影响。计算表明：SILEX-I激光器信噪比达到108∶1时，预脉冲对用5 μm靶时鞘层加速电场的影响可以忽略。
|
| 关 键 词： | 激光等离子体 质子加速 靶背法向鞘层加速 截止能量 有质动力势 等离子体标长 |
| 收稿时间： | 1900-01-01; |
Calculation of proton cut-off energy accelerated in interaction of fs-laser pulse and solid targets |
| |
| QIN Xiao-zun,HONG Wei,TIAN Cheng-lin,TANG Cui-ming,HE Ying-ling,ZHANG Ji-yan,JIANG Shao-en,GU Yu-qiu,DING Yong-kun. Calculation of proton cut-off energy accelerated in interaction of fs-laser pulse and solid targets[J]. High Power Laser and Particle Beams, 2008, 20(8) |
| |
| Authors: | QIN Xiao-zun HONG Wei TIAN Cheng-lin TANG Cui-ming HE Ying-ling ZHANG Ji-yan JIANG Shao-en GU Yu-qiu DING Yong-kun |
| |
| Affiliation: | 1. College of Science， National University of Defense Technology， Changsha 410073, China ； 2. Research Center of Laser Fusion， CAEP， P.O.Box 919-986， Mianyang 621900， China |
| |
| Abstract: | Cut-off energy of proton accelerated in experiment on SILEX-I is estimated, according to the front mechanism and rear side mechanism of interaction between ultrashort ultra-intense laser and solid target. The estimation according to the rear side mechanism agree well with experimental data. Meanwhile, the maximum proton energy accelerated in interaction of short laser pulse with solid targets on SILEX-I is also calculated: 11 MeV for the rear side mechanism and 2.0 MeV for the front side mechanism. Besides, the influence of prepulse to accelerating field is estimated by Multi2005 code and it can be neglected when signal-to-noise ratio is better than 108∶1. |
| |
| Keywords: | Proton acceleration TNSA Cut-off energy Ponderomotive potential Plasma scale |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载全文 |
|
