Synthesis of high-pressure phases of silica by laser-induced optical breakdown
Synthesis of high-pressure phases of silica by laser-induced optical breakdown
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DOI：
10.1007/s00339-011-6437-6
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发表时间：
2011-05
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影响因子：
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通讯作者：
V. Mizeikis;S. Kohara;Y. Onishi;N. Hirao;A. Saito;A. Vailionis;S. Juodkazis
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文献类型：
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作者：
V. Mizeikis;S. Kohara;Y. Onishi;N. Hirao;A. Saito;A. Vailionis;S. Juodkazis
我们报道了利用低能量、紧聚焦飞秒激光脉冲引起的局部光学击穿产生的强大冲击波和热瞬态，在α-石英基质晶体内合成压缩二氧化硅相。通过X射线衍射技术对辐照区域的结构表征揭示了一种新的高压二氧化硅相的特征，理论上预计在120 GPa的压力下形成。
We report on synthesis of compressed silica phase formed inside aα-quartz host crystal using powerful shock-wave and thermal transients generated via local optical breakdown induced by low-energy, tightly focused femtosecond laser pulses. Structural characterization of irradiated areas by the X-ray diffraction technique reveals signatures of a new high-pressure phase of silica, which is theoretically expected to form at a pressure ofá120áGPa.