Uncertainty of Radiant Power Calibration based on Synchrotron Radiation caused by Spectral Distribution and Polarization State

2010 ◽  
Author(s):  
Tatsuya Zama ◽  
Ichiro Saito ◽  
R. Garrett ◽  
I. Gentle ◽  
K. Nugent ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Spectral Distribution ◽  
Polarization State ◽  
Radiant Power

Absolute measurement of radiant power for synchrotron radiation monochromatized X-rays

2019 ◽  
Vol 4 (1) ◽  
pp. 97-105
Author(s):  
Fan Li ◽  
Yi-Dong Zhao ◽  
Pei-Wei Wang ◽  
Lei Zheng ◽  
Si-Ming Guo ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Absolute Measurement ◽  
X Rays ◽  
Radiant Power

A monitor for the spectral distribution of white synchrotron radiation

1994 ◽  
Vol 81 (12) ◽  
pp. 551-552 ◽  
Author(s):  
D. Heimermann ◽  
Th. Beier ◽  
H. Dittmann ◽  
A. Hein ◽  
H. Mommsen ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Spectral Distribution

Angular and spectral distribution of infrared synchrotron radiation emitted by an undulator and its edges

1999 ◽  
Author(s):  
Alessandro Nucara ◽  
Mariangela Cestelli Guidi ◽  
Oliver Marcouille ◽  
Pascale Roy ◽  
Paolo Calvani ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Spectral Distribution

A Monitor for the Spectral Distribution of White Synchrotron Radiation

1994 ◽  
Vol 81 (12) ◽  
pp. 551-552
Author(s):  
D. Heimermann ◽  
Th. Beier ◽  
H. Dittmann ◽  
A. Hein ◽  
H. Mommsen ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Spectral Distribution

scholarly journals Quantitative investigation of linear arbitrary polarization in an APPLE-II undulator

2018 ◽  
Vol 25 (2) ◽  
pp. 378-384
Author(s):  
Matthew Hand ◽  
Hongchang Wang ◽  
Francesco Maccherozzi ◽  
Marco Apollonio ◽  
Jingtao Zhu ◽  
...  
Keyword(s):  
Electron Beam ◽  
Synchrotron Radiation ◽  
Light Source ◽  
Polarization State ◽  
Measured Data ◽  
Beam Polarization ◽  
Quantitative Investigation ◽  
X Ray ◽  
The World

Insertion devices are utilized at synchrotron radiation facilities around the world for their capability to provide a high-brilliance X-ray beam. APPLE-II type undulators are especially important for their capacity to switch between a variety of photon beam polarization states. A high-precision soft X-ray polarimeter has been used to investigate the polarization calibration of an APPLE-II undulator (period length λu= 64 mm) installed on beamline I06 at Diamond Light Source. Systematic measurement of the beam polarization state at a range of linear arbitrary angles has been compared with the expected result for a given set of undulator gap and row phase parameters calculated from theory. Determination of the corresponding Stokes–Poincaré parameters from the measured data reveals a discrepancy between the two. The limited number of energy/polarization combinations included in the undulator calibration tables necessitates the use of interpolated values for the missing points which is expected to contribute to the discrepancy. However, by modifying the orbit of the electron beam through the undulator by at least 160 µm it has been found that for certain linear polarizations the discrepancies can be corrected. Overall, it is suggested that complete correction of the Stokes–Poincaré parameters for all linear angles would require alteration of both these aspects.

Spectral Distribution of Infrared Synchrotron Radiation by an Insertion Device and Its Edges: A Comparison Between Experimental and Simulated Spectra

2000 ◽  
Vol 84 (3) ◽  
pp. 483-486 ◽  
Author(s):  
P. Roy ◽  
M. Guidi Cestelli ◽  
A. Nucara ◽  
O. Marcouille ◽  
P. Calvani ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Spectral Distribution ◽  
Insertion Device

TXRF with Various Excitation Sources

1991 ◽  
Vol 35 (B) ◽  
pp. 925-931 ◽  
Author(s):  
Peter Wobrauschek ◽  
Peter Kregsamer ◽  
Christina Streli ◽  
Robert Rieder ◽  
Hannes Aiginger
Keyword(s):  
Synchrotron Radiation ◽  
High Power ◽  
Spectral Distribution ◽  
Detection Limits ◽  
High Energy ◽  
Exciting Radiation ◽  
X Rays ◽  
Beam Path ◽  
X Ray ◽  
Excitation Conditions

AbstractImproving the detection limits in TXRF by optimizing the excitation conditions is the goal of this work. The properties of the exciting radiation due to spectral distribution, polarisation, intensity and energy are investigated and compared to find best conditions. Results are given from experiments performed with synchrotron radiation, Bragg polarized monoenergetic x-rays, high energy cut-off reflector in the primary beam path of a high power x-ray tube and several geometries for the sample reflector.

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