POLARIZER ANALYZER FILTER FOR NUCLEAR RESONANT SCATTERING OF SYNCHROTRON-RADIATION

被引：57
|
作者：
TOELLNER, TS
ALP, EE
STURHAHN, W
MOONEY, TM
ZHANG, X
ANDO, M
YODA, Y
KIKUTA, S
机构：
[1] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN
[2] UNIV TOKYO,FAC ENGN,DEPT APPL PHYS,BUNKYO KU,TOKYO 113,JAPAN
来源：
APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 14期
关键词：
D O I：
10.1063/1.114764
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A silicon (840) channel-cut crystal with a large asymmetry is used to linearly polarize synchrotron radiation generated by an undulator source at the 14.413 keV nuclear resonance of Fe-57. The resulting <(sigma)over cap>-polarized radiation is then scattered from an Fe-57 foil placed in a magnetic field that effects <(sigma)over cap>--><(pi)over cap> polarization conversion within the resonant bandwidth. A second crystal of the same type is placed in a crossed position to suppress the nonresonant radiation while transmitting the <(pi)over cap>-polarized resonant radiation. A polarization suppression factor of 6X10(-7) has been obtained. The suppression of the nonresonant radiation allowed monitoring the decay of the nuclear levels after 1 ns of their excitation. (C) 1995 American Institute of Physics.
引用
收藏
页码：1993 / 1995
页数：3
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