Study on unoccupied d and felectronic states by soft x-ray resonant inverse-photoemission spectroscopy

软X射线共振反光电子能谱研究未占据的d和f电子态

• 批准号: 08404020
• 负责人: TANIGUCHI Masaki
• 金额: $ 12.67万
• 依托单位: HIROSHIM UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08404020/
• 关键词: resonant inverse-photo-emission spectroscopy; transition metal elements; rare earth elements; non-periodic spherical grating; Rowland-type monochro-mator; soft x-ray emission spec-troscopy; 光線追跡

The purpose of this study is to design and build soft x-ray inverse-photoemission spectrom-eters, to develope the resonant inverse-photoemission experiments on transition-metal and rare-earth elements in the core absorption regions and to reveal the mechanism of the inverse-photo-emission theoretically. For this purpose, we have built two inverse-photoemission spectrometers for hv= 10-100 eV and 100-1000 eV, where hv is an emitted photon energy.For the spectrometers for hv= 10-100 eV, we have designed an optical system using non-periodic spherical gratings with d=600 and 1200 lines/ram, where d is a nominal groove density. On the other hand, for hv=l00-1000 eV, we have adopted a usual Rowland-type monochromator with spherical gratings with d=600, 1200 and 2400 lines/mm.Since, an x-ray tube, a discharge lamp and an electron analyzer as well as the monochromator are mounted to the analysis chamber, the x-ray and ultraviolet photomission spectrocopis are also available . Furthermore, using the present monochromators and synchotron radiation from the compact storage ring at Hiroshima Synchrotron Radiation Center (HiSOR), we can also do the soft x-ray emission spectroscopy. The multiple studies of the electronic structure of materials are possible.

本研究的目的是设计和制作软X射线逆光电子能谱，开展芯吸收区过渡金属和稀土元素的共振反光电子能谱实验，从理论上揭示反光电子发射的机理。为此，我们建立了Hv=10-100 eV和100-1000 eV的两台逆光电子能谱仪，其中Hv是发射的光子能量；对于Hv=10-100 eV的光谱仪，我们设计了一个非周期球面光栅光学系统，d=600和1200线/ram，其中d是标称沟槽密度。另一方面，对于HV=100-1000 eV，我们采用了常用的罗兰型球面光栅单色仪，d=600、1200和2400线/毫米，由于分析室上安装了X射线管、放电灯和电子分析仪以及单色仪，因此还可以使用X射线和紫外光分光谱仪。此外，利用现有的单色仪和来自广岛同步辐射中心(HISOR)紧凑存储环的同步辐射，我们还可以进行软X射线发射光谱。对材料电子结构的多重研究是可能的。

项目成果

小野泉他: "A study of electronic states of trigonal and amorphous Se using ultraviolet photoemission and inverse-photoemission spectroscopies" Journal of Physics:Condensed Matter. 8. 7249-7261 (1996)

Izumi Ono 等人：“利用紫外光发射和逆光发射光谱研究三角和非晶 Se 的电子态”《物理学杂志：凝聚态》8. 7249-7261 (1996)

仲武昌史他: "Phtoemission and inverse-photoemission spectra of quasi-two-dimentional Mo_4O_<11>" Journal of Electron Spectroscopy and Related Phenomena. 78. 485-488 (1996)

Masashi Nakatake 等人：“准二维 Mo_4O_<11> 的光发射和逆光发射光谱”《电子能谱与相关现象杂志》78. 485-488 (1996)

M.Koyama et al.: ""Photoemission and ultraviolet inverse-photo-emission studies of CrSe with NiAs-type crystal structure"" J.Elec.Spec.Relat.Phenom.78. 83-86 (1996)

M.Koyama 等人：“具有 NiAs 型晶体结构的 CrSe 的光发射和紫外逆光发射研究”J.Elec.Spec.Relat.Phenom.78。

T.Kotsugi et al.: ""Soft x-ray emission spectroscopy of NiAs-type MnTe at the Mn 2p core threshold"" J.Elec.Spec.Relat.Phenom.88-91. 293-296 (1998)

T.Kotsugi 等人：“NiAs 型 MnTe 在 Mn 2p 核心阈值处的软 X 射线发射光谱”J.Elec.Spec.Relat.Phenom.88-91。

H.Sato et al.: ""UV emission spectrometer using a non-periodic grating"" J.Syn.Rad.5. 772-773 (1998)

H.Sato 等人：“使用非周期光栅的紫外发射光谱仪”J.Syn.Rad.5。