CAJ | 학술논문

利用一维多群辐射输运程序RDMG数值模拟神光Ⅱ条件下辐射烧蚀铝箔的实验研究，详细描述了X光在铝箔中的辐射输运过程，清楚地显示了辐射热波在铝箔中的传播；给出铝等离子体温度密度的时空分布、铝箔背面出射的X光能谱及出射X光各能区能流随时间的变化，分析出射X光的能区对测量结果的影响，对神光Ⅱ条件下辐射烧蚀铝箔的厚度范围进行初步的探讨。数值结果与实验结果相吻合。
이용일유다군복사수운정서RDMG수치모의신광Ⅱ조건하복사소식려박적실험연구，상세묘술료X광재려박중적복사수운과정，청초지현시료복사열파재려박중적전파；급출려등리자체온도밀도적시공분포、려박배면출사적X광능보급출사X광각능구능류수시간적변화，분석출사X광적능구대측량결과적영향，대신광Ⅱ조건하복사소식려박적후도범위진행초보적탐토。수치결과여실험결과상문합。
We simulated radiation ablating Aluminum foil by using 1D muti-group code(RDMG). With intense laser beams heating a gold hohlraum, the X-ray with intensity of 0.71×1014W*cm-2 and pulse width 1.0ns emits from the hohlraum ablating 1.5μm and 3μm thick aluminum foil. The simulation investigates the radiation energy transport in hot dense medium-Z matter (aluminum) and clearly shows the process of radiation heat wave passing through the aluminum foil. It has shown the sudden onset of X-ray flux from rear side of aluminum foil observed by experiments. The burn-through times predicted by the simulation fit well with the experimental results.