物理学报
物理學報
물이학보
2015年
8期
085202-1-085202-6
,共1页
王峰%彭晓世%薛全喜%徐涛%魏惠月
王峰%彭曉世%薛全喜%徐濤%魏惠月
왕봉%팽효세%설전희%서도%위혜월
冲击波%直接驱动%准等熵%干涉仪
遲擊波%直接驅動%準等熵%榦涉儀
충격파%직접구동%준등적%간섭의
shock wave%direct-drive%isentropic%interferometer
整形激光直接驱动准等熵压缩实验技术对新材料科学、冲击波物理、地球物理学研究等领域有重要意义。设计特定的实验条件,可以将材料压缩到冲击压缩和等熵压缩都无法达到的状态,从而为材料研究提供新的技术途径。介绍了在神光III原型装置上开展的直接驱动准等熵压缩实验,对理论基础、实验靶型、实验结果、关键技术、实验特点和数据都进行了较详细的分析。通过实验和相应的数据处理程序,获得了加载面上压力超过400 GPa的数据,这是目前国际上用激光直接驱动的方式获得的Al材料中最高的压力。同时,对经过LiF窗口获得的表观粒子速度与真实粒子速度的关系进行了分析,获得了一条对表观粒子速度进行动态修正的曲线,从而使粒子速度的计算更加准确。对实验的改进方向进行了比较明确的分析。所提供的数据和分析过程对该领域的研究人员有一定的参考价值。
整形激光直接驅動準等熵壓縮實驗技術對新材料科學、遲擊波物理、地毬物理學研究等領域有重要意義。設計特定的實驗條件,可以將材料壓縮到遲擊壓縮和等熵壓縮都無法達到的狀態,從而為材料研究提供新的技術途徑。介紹瞭在神光III原型裝置上開展的直接驅動準等熵壓縮實驗,對理論基礎、實驗靶型、實驗結果、關鍵技術、實驗特點和數據都進行瞭較詳細的分析。通過實驗和相應的數據處理程序,穫得瞭加載麵上壓力超過400 GPa的數據,這是目前國際上用激光直接驅動的方式穫得的Al材料中最高的壓力。同時,對經過LiF窗口穫得的錶觀粒子速度與真實粒子速度的關繫進行瞭分析,穫得瞭一條對錶觀粒子速度進行動態脩正的麯線,從而使粒子速度的計算更加準確。對實驗的改進方嚮進行瞭比較明確的分析。所提供的數據和分析過程對該領域的研究人員有一定的參攷價值。
정형격광직접구동준등적압축실험기술대신재료과학、충격파물리、지구물이학연구등영역유중요의의。설계특정적실험조건,가이장재료압축도충격압축화등적압축도무법체도적상태,종이위재료연구제공신적기술도경。개소료재신광III원형장치상개전적직접구동준등적압축실험,대이론기출、실험파형、실험결과、관건기술、실험특점화수거도진행료교상세적분석。통과실험화상응적수거처리정서,획득료가재면상압력초과400 GPa적수거,저시목전국제상용격광직접구동적방식획득적Al재료중최고적압력。동시,대경과LiF창구획득적표관입자속도여진실입자속도적관계진행료분석,획득료일조대표관입자속도진행동태수정적곡선,종이사입자속도적계산경가준학。대실험적개진방향진행료비교명학적분석。소제공적수거화분석과정대해영역적연구인원유일정적삼고개치。
Quasi-isentropic compression technique is very useful for new material, shock wave physics, and earth physics. With shaping pulse laser, the quasi-isentropic compression technique is provided. For the designed experimental condition, the high energy density of shaping lasers can be used to generate shockless loading on the solid material to reach a high compression rate state with low temperature, which cannot be obtained with shock compression and isentropic compression technique. Then a new way to study the material can be provided. In this paper, the isentropic compression experiment with laser direct-drive illumination based on Shen Guang-III prototype laser facility is conducted. The theoretical model, target designing, experimental results, key technique, experimental characteristics and experimental data are analyzed in detail. The compression pressure above 400 GPa on the loading surface is obtained with experimental data and processing program, which is the highest pressure achieved to date. After comparing the apparent particle velocity with the true particle velocity, the dynamic correction curve can be obtained to achieve the real particle velocity, which is more accurate. The improving direction is provided, which will provide the important information. The experimental data and design will give the valuable reference for the study in this field.