本文選題：激光　切入點(diǎn)：動(dòng)高壓　出處：《強(qiáng)激光與粒子束》2017年09期 　論文類型：期刊論文

【摘要】：基于金屬電子氣模型,進(jìn)行了溫度、壓力對Au反射率變化影響的研究與分析。利用DAC裝置開展了壓力對Au反射率變化測量實(shí)驗(yàn),以及激光加熱的動(dòng)態(tài)溫升條件下溫度對Au反射率變化測量實(shí)驗(yàn),獲得了探測光束波長為488nm條件下,溫度(室溫至350℃)和壓力(11GPa范圍內(nèi))對Au反射特性影響的實(shí)驗(yàn)結(jié)果。結(jié)果表明:在11GPa壓力范圍內(nèi),與溫度因素相比,壓力對Au的反射率變化影響可忽略;Au對488nm波長激光的反射率變化趨勢為單調(diào)遞增,變化幅值達(dá)約10%,且具有反射率與溫度的一一對應(yīng)特性。通過動(dòng)高壓加載下材料溫度瞬態(tài)測量要求分析,認(rèn)為基于Au在488nm波長下的反射變化特性,可建立一種適用于動(dòng)高壓加載下低溫段(低于1000K)的瞬態(tài)測溫方法,用于解決材料動(dòng)高壓領(lǐng)域的瞬態(tài)測溫技術(shù)難點(diǎn)。
[Abstract]:Based on the metal electron gas model, the effects of temperature and pressure on the variation of au reflectance are studied and analyzed. The measurement experiment of pressure on au reflectivity is carried out by using DAC device. And the experiment of measuring the variation of temperature to au reflectance under the condition of dynamic temperature rise of laser heating has been carried out. The wavelength of the probe beam is 488nm. The experimental results of the effect of temperature (room temperature to 350 鈩，

本文編號(hào)：1602795