Volume 03, No.6
目次 / Table of Contents
November issue 1998
1. ハイライト／HIGHLIGHT
2. SPring-8の現状／PRESENT STATUS OF SPring-8
東京大学 大学院理学系研究科 Dept. of Chemistry, School of Science, the University of Tokyo
3. 共用ビームライン／PUBLIC BEAMLINE
（財）高輝度光科学研究センター 放射光研究所 利用促進部門長 JASRI Experimental Facilities Promotion Division
[1]理化学研究所 播磨研究所 RIKEN Harima Institute、[2]姫路工業大学 大学院理学研究科 Division of Biological Sciences, Graduate School of Science, Himeji Institute of Technology、[3]（財）高輝度光科学研究センター 放射光研究所 JASRI Research Sector
4. 原研･理研･R&Dビームライン／JAERI･RIKEN･R&D BEAMLINE
日本原子力研究所 関西研究所 放射光利用研究部 Dept. of Synchrotron Radiation Facilities, JAERI Kansai Research Establishment
理化学研究所・播磨研究所 Ｘ線干渉光学研究室 Coherent X-ray Optics Laboratory, RIKEN Harima Institute
- Abstruct
- Ionization Chambers are widely in use as X-ray beam intensity monitors in synchrotron radiation experiments, but it has been known that proportionality degradation will be caused by electron-ion recombination process when high ionizing current is generated in the ionizing charged particle experiment. Proportionality degradation due to intense X-ray beam was experimentally investigated at the BL47XU to cope with the high current storage ring operation and improvement of beamline X-ray optics devices.
5. 最近の研究から／FROM LATEST RESEARCH
（財）高輝度光科学研究センター 放射光研究所 JASRI Research Sector
- Abstract
- Helicity-modulation technique for accurate measurements of x-ray magnetic circular dichroism (XMCD) has been developed by a combination of a diamond x-ray phase retarder and a phase-sensitive detection system. A measured XMCD spectrum at the Fe K-edge in CoFe2O4 agreed with that obtained with a conventional magnetic field inversion method. The new technique gave the spectrum with higher statistical accuracy in shorter measuring time.
