Fluoroscence Intensity Formula:
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Definition: Fluoroscence Intensity is defined as the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy.
Purpose: This calculator helps determine the intensity of fluorescence emission based on the rate constants and absorption intensity.
The calculator uses the formula:
Where:
Explanation: The formula calculates the fluorescence intensity by considering both radiative and non-radiative decay processes.
Details: Accurate calculation of fluorescence intensity is crucial in spectroscopy, chemical analysis, and various scientific research applications.
Tips: Enter the rate constant of fluorescence, absorption intensity, and rate constant of non-radiative reaction. All values must be positive numbers.
Q1: What affects fluorescence intensity?
A: Fluorescence intensity depends on the absorption intensity, quantum yield, and competition between radiative and non-radiative decay processes.
Q2: What are typical values for Kf?
A: Typical fluorescence rate constants range from 106 to 109 s-1 depending on the fluorophore.
Q3: What does KNR represent?
A: KNR represents all non-radiative decay processes including internal conversion and intersystem crossing.
Q4: How is absorption intensity measured?
A: Absorption intensity is typically obtained by integrating the area under the absorption spectrum.
Q5: What if KNR is zero?
A: If KNR is zero, the fluorescence intensity equals the absorption intensity (IF = Ia).