Development of in-situ high-pressure and -temperature chemical analysis technique by femto-second laser-induced breakdown spectroscopy

飞秒激光诱导击穿光谱原位高压高温化学分析技术的发展

• 批准号: 23244104
• 负责人: KANZAKI Masami
• 金额: $ 27.54万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23244104/
• 关键词: geofluid; chemical analysis; in-situ; LIBS; diamond anvil cell; plasma; spectroscopy; pulse laser; 高温高圧; 流体; その場観察; レーザー誘起プラズマ; ダイヤモンドアンビル; ブレークダウン分光法; 地殻流体; マグマ; プラズマ発光分光; 高圧その場測定; 元素分配; 化学分析; 分光; その場測定; 高温高圧実験

Slab-derived fluids can contain substantial amounts of silicate components, but it is difficult to quench such fluids, and its composition can not be determined precisely. In this study, I proposed a novel in-situ method for chemical analysis of fluid under high pressure and temperature conditions. In this method, pulsed laser beam is focused in small area of sample within diamond anvil cell (DAC). Plasma will be produced, and then plasma cools down to form neutral atoms. Then characteristic wavelength light inherent to atoms will be emitted. By analyzing this light, we can determine chemical composition of the fluid in DAC.To evaluate this proposed method, externally-heated DAC, monochrometer, gated-intensifier and CCD detector, and pico-second laser are introduced, So far, high-pressure and temperature fluids have been produced using externally heated DAC, but laser induced plasma light in DAC has not been detected yet.

平板衍生的流体可以包含大量的硅酸盐成分，但是很难淬灭此类液体，并且无法精确确定其组成。在这项研究中，我提出了一种新型的原位方法，用于在高压和温度条件下对流体进行化学分析。在这种方法中，脉冲激光束聚焦于钻石砧室（DAC）中的样品中。血浆将产生，然后血浆冷却以形成中性原子。然后，将发出具有原子固有的特征波长光。 By analyzing this light, we can determine chemical composition of the fluid in DAC.To evaluate this proposed method, externally-heated DAC, monochrometer, gated-intensifier and CCD detector, and pico-second laser are introduced, So far, high-pressure and temperature fluids have been produced using externally heated DAC, but laser induced plasma light in DAC has not been detected yet.

项目成果

The crystal structures of two Zn2SiO4 high-pressure polymorphs

两种Zn2SiO4高压多晶型物的晶体结构

• 作者: Liu;Xianyu
• 通讯作者: Xianyu

モガナイト構造を持つ高圧AlPO4相について

关于具有莫干石结构的高压AlPO4相

• 发表时间: 2011
• 作者: 久井裕貴;増田真規;寺坂健一郎;田中雅慶;Hugo Benichi;神崎正美・薛献宇
• 通讯作者: 神崎正美・薛献宇

第一原理計算によるNMRパラメータの予測：K-cymriteとAlPO4多形

通过第一原理计算预测 NMR 参数：K-cymrite 和 AlPO4 多晶型

• 作者: H.Nakao;H.Yamada;M.Kubota;J.Okamoto;Y.Yamasaki;K.Iwasa;Y.Murakami;A.Sawa;神崎正美・薛献宇
• 通讯作者: 神崎正美・薛献宇

Pressure-driven liquid-liquid transformations and corresponding bizzare viscosity behavior

压力驱动的液-液转变和相应的奇异粘度行为

• 发表时间: 2013
• 期刊: Advances in Chemical Physics
• 作者: Brazhkin;V.V.;Katayama;Y.;Kanzaki;M. and Lyapin;A.G.
• 通讯作者: A.G.

酸素欠損カルシウム・アルミニウム・ケイ酸塩ペロブスカイトの結晶化学

缺氧钙铝硅酸盐钙钛矿的晶体化学

• 发表时间: 2013
• 作者: 神崎正美・薛献宇・Shufang;Nie
• 通讯作者: Nie