CAJ | 학술논문

为研究同一次激光驱动下初始扰动幅值不同时瑞利‐泰勒（Rayleigh‐Taylor ，R‐T ）不稳定性非线性演化的差别，采用单点金刚石车削技术，以太空铝合金为材料加工了两侧具有不同扰动幅度的模板。然后利用旋转涂覆工艺将模板表面的扰动图形转移至CH薄膜表面，制得了双模式CH平面调制靶。通过QC‐5000型光学显微镜、alpha‐step 500型台阶仪、NT1100型白光干涉仪等对铝合金模板及CH平面调制靶的周期、振幅等参数进行测量。结果表明：模板和CH平面调制靶的两侧均具有不同的扰动图形；两侧扰动的波长相同，均为54μm左右，但振幅不同，分别为4.8μm和1.9μm ；两侧扰动的平衡位置在同一水平面，调制图形的各项参数与设计值基本一致，模板表面的扰动图形成功地转移到了CH薄膜表面，获得了满足R‐T不稳定性实验需求的双模CH平面调制靶。
위연구동일차격광구동하초시우동폭치불동시서리‐태륵（Rayleigh‐Taylor ，R‐T ）불은정성비선성연화적차별，채용단점금강석차삭기술，이태공려합금위재료가공료량측구유불동우동폭도적모판。연후이용선전도복공예장모판표면적우동도형전이지CH박막표면，제득료쌍모식CH평면조제파。통과QC‐5000형광학현미경、alpha‐step 500형태계의、NT1100형백광간섭의등대려합금모판급CH평면조제파적주기、진폭등삼수진행측량。결과표명：모판화CH평면조제파적량측균구유불동적우동도형；량측우동적파장상동，균위54μm좌우，단진폭불동，분별위4.8μm화1.9μm ；량측우동적평형위치재동일수평면，조제도형적각항삼수여설계치기본일치，모판표면적우동도형성공지전이도료CH박막표면，획득료만족R‐T불은정성실험수구적쌍모CH평면조제파。
In order to study the difference of the nonlinear evolution of Rayleigh‐Taylor instability under the same driven condition while the initial perturbation amplitude was different .The aluminum alloy templates with different perturbation amplitudes at two sides of its surface were fabricated via single‐point diamond turning technology .Then the perturbation pattern was transferred from the template to the CH film via spin coat‐ing process ,and the dual‐mode CH planar perturbation target was prepared .Parameters of the aluminum alloy template and the CH target ,such as the perturbation period and perturbation amplitude were characterized by QC‐5000 tool microscope ,alpha‐step 500 surface profiler and NT1100 white light interferometer .Results show that both the tem‐plate and the CH planar perturbation target have different perturbation patterns at two sides of their surfaces .The perturbation periods at two sides are both 54 μm ,while the perturbation amplitude is 4.8 μm and 1.9 μm at the left and right sides ,respectively . The equilibrium position of the perturbation pattern at two sides is in the same horizon‐tal plane .Parameters of the template and the target are consistent with the designed value ,the perturbation pattern is transferred from the aluminum alloy template to the CH film successfully ,and the dual‐mode CH planar perturbation target which meets the requirements of the Rayleigh‐Taylor instability experiment was fabricated .