3w/2谐波光谱与发射角度的关系
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摘要: 测量了1.053μm激光和金盘靶相互作用产生的3w/2谐波红移峰的波长移动量与谐波发射角度之间的关系,并根据有关物理模型推断出电子温度,排除了3w/2谐波与TPD不稳定性发生在同一区域的可能性。
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关键词:
- 双等离子体波衰变不稳定性 /
- 3w/2谐波
Abstract: Time-integrated spectra of three-halves harmonic emission from Au-disk irradiated by 1.053m m laser are experimentally studied. The wavelength shifts of red-shifted peak of the harmonic emission are measured in different angles. Fitting the experimental results to Barr's and Giulietti's theory shows that both theories can predict the correct dependence of the wavelength shift on the cosine of the emission angle while the former underestimates the electron temperature, and the later gives a result more close to that measured by x-ray.-
Key words:
- tpd instability /
- 3w / 2 harmonic emission
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