1990 Fiscal Year Final Research Report Summary
Electron Momentum Distribution of Liquid Metals by High Resolution Compton Scattering
| Project/Area Number |
01460039
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
物性一般（含極低温･固体物性に対する理論）
|
|---|
| Research Institution | Gunma University |
|---|
Principal Investigator |
ITOH Fumitake Gunma University, Faculty of Engineering, Professor, 工学部, 教授 (60005907)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NARA Hisashi Tohoku University, Education Center for Information Processing, Professor, 情報処理教育センター, 教授 (90005752)
|
|---|
| Project Period (FY) |
1989 – 1990
|
| Keywords | Compton Scattering / Liquid Metal / Alkalline Metal / Gallium / Lithium / Sodium / Synchrotron Radiation |
|---|
| Research Abstract |
The purpose of this research project is to study the electron momentum density of simple liquid metals and non-simple liquid metals such as Li-Ga using high resolution Compton scattering spectrometer installed at KEK-PF and KEK-AR.
Liquid alkalline metals were studied using Compton spectrometer at KEK-PF which have the momentum resolution of 0.09 atomic unit, the highest resolution in the world. Changes of Compton plofiles upon melting in Li and Na showed the narrowing in the shape of the profile. The great blurring of the Fermi momentum in liquid Li-Na alloy compared to that in pure metals should be noticed.
Liquid Li-Ga alloy were investigated using a new Compton spectrometer constructed newly at KEK-AR with the momentum resolution of 0.12 atomic unit at the incident energy of 60 keV. The Compton profile change of pure Ga showed an increase upon melting in contrast to alkaline metals. This suggest that the Fermi momentum of Ga increases upon melting. It is no be noticed that the change of the Compton profile of liquid Li_0._9Ga_0._1 alloy was similar to liquid Ga casa. No noticeable decrease of the Fermi momentum has been observed.
From the theorerical side, the effeects of phase-transition from diamond-type to NaCL-type structure of InSb on momentum disribution have been studied in terms of pseudo-potetial theory.
|
-
-
-
-
-
-
-
-
[Publications] Y. Sakurai, N. Shiotani, N. Sakai, M. Ito, T. Urai, F. Itoh, S. Nanao, T. Iwazumi. H. Kawata and M. Ando ;: "High Resolution Compton Spectrometer at NE-1" Photon Factory Activity Report,. 7,. 223-223, (1989)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] N. Shiotani, M. Sakai, F. Itoh, M. Sakurai, H, Kawata, Y. Amemiya, and M. Anko ;: "An X-ray Spectrometer for Compton Scattering Experiments with Synchorotron Radiation" Nuclear Instruments and Methoda,. A275,. 447-452, (1989)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] F. Itoh, M. Sakurai, T. Sugawa, K. Suzuki, N. Sakai, M. Itoh, O. Mao, N. Shiotani, Y. Tanaka, Y. Sakurai, S. Nanao, H. Kawata, Y. Amemiya and M. Ando ;: "High-Resolution Compton Profile Spectrometer for 29.5 keV X rays with a Combination of Crystal Analyzer and Imaging Plate." Reviw of Scientific Instruments. 60,. 2402-2405, (1989)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] F. Itoh, T. Sugawa, H. Sakurai, K. Suzuki, N. Sakai, M. Itoh, N. Shiotani, H. Kawata, and M. Ando ;: "High Resolution Compton Profiles of Liquid Li, Na and Li-Na Alloy" Journal of Non-Crystalline Solids,. 117/118,. 421-424, (1990)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] H. Kawata, M. Sato, T. Iwazumi, M. Ito, Y. Tanaka, N. Shiotani, F. Itoh, H. Sakurai, Y. Sakurai, Y. Watanabe, and S. Nanao ;: "Water-Cooled Quasi-Doubly-Bent Crystal Monochromator for Compton Scattering Experiments" Review of Scientific Instruments,.
Description
「研究成果報告書概要(欧文)」より
