新しい高圧発生技術による極高圧物質科学の開拓

利用新型高压发生技术发展极高压材料科学

• 批准号: 21K18155
• 负责人: 境 毅
• 金额: $ 15.97万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Research (Pioneering)
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-07-09 至 2026-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K18155/
• 关键词: コニカルサポート型２段式ダイヤモンドアンビルセル; トロイダル型ダイヤモンドアンビルセル; 高荷重; 高圧発生技術; 高圧物質科学; 惑星深部科学; 2段式ダイヤモンドアンビルセル; 巨大ガス・氷惑星内部科学; X線吸収分光

本研究では、コニカルサポート型２段式ダイヤモンドアンビルセル(cs-ds-DAC)やトロイダル型ダイヤモンドアンビルセル(t-DAC)といった新しい高圧発生技術の開発を通して、極高圧物質科学・巨大惑星深部科学の開拓を行うことを目的としている。令和4年度は、t-DACにおいては①より小さい先端径での実験、②平坦部の縮小、ds-DACにおいては③２段目アンビルの大型化、またこれら２つの技術を融合した④ds-t-DACの試作を行った。①では、アンビル先端径を7 umまで縮小し、凸部ベベル角度を6.0度と9.9度の２種類を試した。後者は前者に比べて高い加圧効率と、先端部でのより急勾配な圧力分布となったが、従来の実験と比較した場合に圧力発生効率に大きな違いは見られず、発生圧力も385~402 GPaとなり大きな改善は見られなかった。②では、凸部を支える平坦部サイズを従来のφ80-90 um程度から半分の40 umにまで縮小した。この場合、凸部高さが3 umの場合は圧力集中が過剰で早期に破壊してしまうが、2.2 umの場合に従来と同程度の加圧効率となることを確認した。③では、ds-DACにおいて２段目アンビルサイズをこれまでで最大のφ50 umまで拡張した。結果としては、加圧効率は従来通りであったものの最高発生圧力は260 GPaに留まった。大型化によるサポート面積の増加の効果よりも荷重増加の効果が大きく、その結果1段目の負担が増えた可能性があり、全体の形状を再考する必要がある。④では、先端30 umのt-DACに、先端径10 umで全体径22 umの２段目アンビルを配置したds-t-DACを試作した。結果としては加圧効率が悪く、最高発生圧力は200 GPa以下に留まった。空間的制約で２段目がどうしても薄くなってしまうのが問題点でここでも２段目をコニカル型にするなどの対応を検討する。

In this study, there are two-stage training programs in the field of medical science and technology in this study. In this study, there is a two-stage training program (cs-ds-DAC). In this study, there are two-stage, one-stage, two-stage Ling and 4 years, the t-DAC system, the small end diameter, the 2 flat part, the ds-DAC, the 32-section, the large-scale, the technical integration and the 4ds-t-DAC operation. The diameter of the front end of the gear is 7 um, and the angle of the convex part is 6.0 degrees, 9.9 degrees and 2 degrees, respectively. In the latter, the former is higher than the other, the front end is much higher than the other, the force distribution is much higher than that of the former, the force distribution of the front end is much higher than that of the former, the latter is higher than that of the former, the former is higher than that of the latter, the former is higher than that of the former, the former is higher than that of the latter, the former is higher than that of the latter, the former is higher than that of the former, the first is higher than that of the former, the latter is higher than that of the former, the latter is higher than that of the former, the former is higher than that of the former, the first is higher than that of the former, the latter is higher than that of the former. 2. The convex part, the flat part, the φ 80-90 um degree, the 40 um, the small band. The combination of the convex part and the high part of the um is concentrated on the early stage of the breakage, and the 2.2 um is used to increase the rate to the same extent. 3. In the second section of the ds-DAC, there is a maximum of φ 50 um in the first two sections. Results the results showed that the maximum health force was 260 GPa and the rate of increase was high. In the large-scale system, there is a need to increase the load, and the results show that in the first paragraph, the possibility is very important, and the shape of the whole body is necessary. 4-inch, 30-um t-DAC, 10-um, 22-um, 2-section, ds-t-DAC configuration. Results the positive rate was significantly higher than that of the control group, and the highest fecundity was less than 200 GPa. The system of the space is divided into two parts: one is the order of the second, and the other is the target of the space. there are two parts of the space.

项目成果

High pressure generation over 4 megabar and pressure scale issue

超过 4 兆巴的高压产生和压力范围问题

• 发表时间: 2022
• 作者: Peng Zhifeng;Komatsubara Takuya;Yamauchi Mao;Arakawa Taro;Zhifeng Peng and Taro Arakawa;Takeshi Sakai
• 通讯作者: Takeshi Sakai