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Figure 6
Dose-response curves for NSLS-II XFP at optimal beam focus based on Alexa 488 fluorescence decay in 10 mM sodium phosphate buffer (pH 7.4) upon X-ray exposure using a high-speed capillary flow (CF) system. During commissioning, a rate of 35000 s−1 was obtained with 76 µm Al attenuation and a beam current of 250 mA. Alexa studies completed after commissioning at 400 mA ring current resulted in rates of 67000 s−1 and 31000 s−1 using 152 µm Al and 508 µm Al, respectively.

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