中文摘要：

超短超强激光与等离子体相互作用中产生的高能质子在激光惯性约柬核聚变，新型台面质子加速器以及医学等研究领域已成为广泛关注的一个热点．本文利用粒子模拟方法（Particle—in—Cell）研究强度为1020W，cm2的激光脉冲照射平板和椭圆形等离子体靶时的高能质子加速情况，研究结果表明，等离子体的形状直接影响被加速的质子能量．

英文摘要：

Studies on the high energy ion beams generated in ultraintense laser-plasma interactions has made consider- able progress recently due to the development of high power laser technologies, such as fast ignition of inertial confine- ment fusion, tabletop proton accelerators, and medical applicat/ons. Now the .research of energetic proton is one of the hotspets. In particular the production of intense proton beams from solid target irradiated with lasers with intensities up to 10~ W/cm2 has caused intense research into the proton acceleration mechanism. In this paper, PIC （Particle-in-Cell） simulation of the plasma target on energetic proton acceleration by ultra-intense laser interaction indicated that a change in the plasma target shape directly affects the degree of contraction accelerated proton bunch.