Study on the electronic states of the outermost surface layers by Metastable deexcitation spectroscopy.

通过亚稳态去激发光谱研究最外表面层的电子态。

• 批准号: 62460033
• 负责人: TOCHIHARA Hiroshi
• 金额: $ 4.16万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62460033/
• 关键词: Solid surface; Surface electronic structure; Adsorption; Metastable atom; 超音速原子線; 超音速電子線

The purpose of this project is to construct a machine for metastdble deexcitation spectroscopy and to measure the outermost surface electronic structures using MDS. We constructed a beam source for MDS and it combined with a UHV chamber which was already working. We adopted a supersonic nozzle beam of He as the metastable atom source. The high-pressure gases are expanded through a nozzle into vacuum. The expanded stream is skimmed by a skimmer located at 10mm downstream to form an atomic beam. Therefore, we need two pumping stages in parallel for evacuation of introduced gases. Two big oil diffusion pumps combined with a box type vacuum chamber which is made of aliminium alloy. We found that an another UHV chamber was required for reducing the contamination of the sample held in the UHV main chamber. Combining the small UHV chamber which is pumped by a turbomolecular pump, we settled the problem. Owing to darkness of an energy analzyer which was already set in the main chamber, it was unsuccessful to get a MDS spectrum. We are now preparing a new type of analyzer with high-brightness.

本课题的目的是建立一台亚稳去激发光谱仪，并利用MDS测量最外层表面的电子结构。我们为MDS建造了一个波束源，它与一个已经在工作的特高压室结合在一起。我们采用氦的超音速喷嘴束作为亚稳态原子源。高压气体通过喷嘴膨胀进入真空。扩展后的流被位于下游10mm处的撇油器撇油，形成原子束。因此，我们需要两个平行的抽气阶段来抽走引入的气体。两个大的油扩散泵与一个铝合金箱式真空室相结合。我们发现需要另一个特高压室来减少特高压主室中样品的污染。结合用涡轮分子泵泵送的特高压小室，解决了这一问题。由于已设置在主室的能量分析仪的黑暗，未能获得MDS频谱。我们正在研制一种新型的高亮度分析仪。

项目成果

H. Tochihara: Fundamentals and application of surface science.NTS publishing, (1989)

H. Tochihara：表面科学的基础和应用。NTS 出版，(1989)

栃原浩: 日本物理学会誌. 42. 482-485 (1987)

Hiroshi Tochihara：日本物理学会杂志 42. 482-485 (1987)。

栃原浩: "「表面科学の基礎と応用」9章4節3項 準安定原子脱励起分光法" エヌ・ティー・エス出版, (1989)

Hiroshi Tochihara：“表面科学的基础与应用，第 9 章、第 4 节、第 3 节：亚稳态原子去激发光谱”NTS Publishing，（1989 年）

H. Tochihara: "Study on the surface adsorbates using Metastable deexcitation spectroscopy." Butsuri. 42. 482-485 (1987)

H. Tochihara：“使用亚稳态去激发光谱研究表面吸附物。”

栃原浩: 表面科学. 8. 236-247 (1987)

栃原浩：表面科学。8. 236-247 (1987)