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Pulse profiles of the LED and IBH 5000F nanosecond flashlamp at their respective and repetition rates under which they were operated.
(A) Emission spectral profile of LED with bandwidth. The FWHM of the main peak is . (B) Fluorescence spectrum of phenylalanine at of 7.4 excited using the LED. The structure of phenylalanine is also shown.
LED instrumental pulse, fluorescence decay of phenylalanine ( of 9.2), fitted function, and weighted residuals for a biexponential (fit 2) model. The weighted residuals for a monoexponential fitted function (fit 1) and chi-squared values are shown for comparison.
Source average and peak output powers. Note that the flashlamp power is integrated between 200 and .
Fluorescence decay times of phenylalanine in water at of 6 and buffered at of 7.4 and 9.2 fitted to monoexponential (1E) and biexponential (2E) models using LED and flashlamp excitations at .
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