Fluorescence parameters derived from the extracted data

dV/dto = 4(F300µs − F0)/(FM − F0)

Approximated initial slope (in ms−1) of the fluorescence transient V = f(t)

Sm = (Area)/(FM − F0)

Normalized total complementary area above the OJIP transient (reflecting multiple turnover QA reduction events)

Yields or flux ratios

TRo/ABS = [1 − F0/FM]

Maximum quantum yield of primary photochemistry at t = 0

jEo= ETo/ABS = [1 − (FJ/FM)]

Quantum yield for electron transport at t = 0

yo = ETo/TRo = (1 − VJ)

Probability (at t = 0) that a trapped exciton moves an electron into the electron transport chain beyond QA-

Specific fluxes or activities per reaction center (RC)

10RC/ABS = Mo(1/VJ)(1/jPo)

Absorption per RC

TRo/RC = Mo/VJ

Trapped energy flux per RC (at t = 0)

ETo/RC = Mo(1/VJ)yo

Electron transport flux per RC (at t = 0)

Phenomenological fluxes or activities per excited cross section (CS)

ABS/CSo » F0

Absorption flux per CS, approximated by F0

TRo/CS = jPo(ABS/CSo)

Trapped energy flux per CS (at t = 0)

ETo/CS = jEo(ABS/CSo)

Electron transport flux per CS (at t = 0)

De-excitation rate constants


Photochemical de-excitation rate constant


Non-photochemical de-excitation rate constant

Sum K

The sum of photochemical and non-photochemical rate constants

Performance index

PI = RC/(ABSRC) × jPo/(1 − jPo) × yo/(1 − yo)

Performance index on absorption basis