介绍了在“神光”Ｉ号装置上利用波长０．５３ｐμｍ、脉宽τ约７５０ｐｓ、能量６０～２３０Ｊ激光（靶面激光强度１×１０￣（１３）～５×１０￣（１５）Ｗ／ｃｍ￣２）照射Ａｕ盘靶和Ａｕ拄黑腔靶产生超热电子的实验观测结果与分析。实验测量１０ｋｅＶ以上硬Ｘ光谱和通量表明：采用倍频激光可以使超热电子能量明显比基频光小一个量级左右，超热电子温度Ｔ＿ｈ、热电子温度Ｔ＿ｅ均降低一半左右，受激Ｒａｍａｎ散射光能量Ｅ＿（ＳＲＳ）减少二个多量级。在我们的实验条件下，Ａｕ盘靶（等离子体定标尺度Ｌ≤１００μｍ）产生超热电子的主要机制可能是双等离子体衰变和共振吸收，此外还有受激Ｒａｍａｎ散射（ｎ≈ｎ＿ｃ／４），１００μｍ＜Ｌ≤２４０μｍ超热电子产生的主要机制是ＴＰＤ，此外还有ＳＲＳ（ｎ≈ｎ＿ｃ／４）；黑腔靶（Ｌ≥３００μｍ）超热电子产生的主要机制是ＳＲＳ（ｎ＜ｎ＿ｃ／４）。 This paper introduces the use of a laser with a wavelength of 0.53pμm, a pulse width τ of about 750ps and an energy of 60 ~ 230J (target laser intensity of 1 × 10 ~ (13) ~ 5 × 10 ~ (15) W / cm ~ 2) irradiation Au target and Au Zhu black cavity target generation of hot electrons in the experimental observations and analysis. Experimental measurements above 10keV hard X-ray spectra and flux show that: the use of double frequency laser can make the super-hot electron energy significantly lower than the fundamental frequency of light by about one order of magnitude, hot electron temperature T_h, hot electron temperature T_e are reduced by about half, Raman scattered light energy E SRS decreased more than two orders of magnitude. Under our experimental conditions, the main mechanism by which the Au target (plasma scaling scale L≤100μm) can generate superheat electrons may be double plasma decay and resonance absorption, in addition to stimulated Raman scattering (n≈n_c / 4 ), 100μm