ELECTRON STORAGE RING BESSY AS A SOURCE OF CALCULABLE SPECTRAL PHOTON FLUX IN THE X-RAY REGION

被引:43
作者
ARNOLD, D [1 ]
ULM, G [1 ]
机构
[1] PHYS TECH BUNDESANSTALT,W-1000 BERLIN 10,GERMANY
关键词
D O I
10.1063/1.1143015
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The electron storage ring BESSY is shown to be a primary standard of spectral photon flux PHI(E) from the infrared to the x-ray region. During the last years we have improved the measurements of the important storage ring parameters involved in the determination of PHI(E) and extended the usable spectral range to the x-ray region. We have achieved a relative uncertainty for PHI(E) of 0.18% (square-root 3-sigma level) at a photon energy E = 1 eV, 0.35% at E = 5 keV and 0.57% at E = 15 keV. In order to investigate and prove possible deviations between the calculated photon flux PHI(E) of BESSY and the flux of well established calibration sources in the x-ray region, the radionuclide x-ray standards, an intercomparison was made using a Si(Li) detector. At two different photon energies, 6.4 and 8.0 keV, agreement within the combined uncertainties was found.
引用
收藏
页码:1539 / 1542
页数:4
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