We have studied pulse waveform dependence of tungsten mass erosion under disruption-like heat loads. In the experiment, tungsten samples were placed in a vacuum chamber and irradiated by a disruption-like heat load using a 1064 nm Nd: YAG laser. Mass erosion of tungsten samples by laser irradiation was measured by a microbalance. Laser intensity (up to 6.2 GW/m²), pulse duration (4 ms–5 ms), and pulsed laser waveform were changed as parameters. Five types of pulsed laser waveforms were used to investigate the mass erosion of tungsten; Positive Ramp, Symmetric Ramp, Negative Ramp, Half Amp Square, Half Width Square. Among these waveforms, the largest mass erosion was observed in Half Width Square under the same absorbed energy condition. Also, when the volume of the molten layer is sufficiently large, the mass erosion will be greater due to evaporation of tungsten and the release of droplets.

我们研究了在类似破坏的热负荷下钨质量侵蚀的脉冲波形依赖性。在实验中，将钨样品放置在真空室内，并使用1064 nm Nd：YAG激光器通过类似破坏的热负荷进行辐照。用微量天平测量激光辐照钨样品的质量侵蚀。激光强度（高达6.2 GW / m ²），脉冲持续时间（4 ms–5 ms）和脉冲激光波形已更改为参数。使用五种类型的脉冲激光波形来研究钨的质量腐蚀。正斜率，对称斜率，负斜率，半安培平方，半宽平方。在这些波形中，在相同的吸收能量条件下，在“半角正方形”中观察到最大的质量腐蚀。同样，当熔融层的体积足够大时，由于钨的蒸发和液滴的释放，质量侵蚀将更大。