Fluorolog-3 v. 2.2 (10 Sep 2002)
Components & Accessories
6-30
Phosphorimeter Accessory
The phosphorimeter adds a programmable, pulsed excitation source and selectable sig-
nal gating from the signal photomultiplier tube. This provides time-discrimination ca-
pability to sort out the lifetimes of simultaneous, competing luminescence emissions.
Because the duration of each exciting pulse from the phosphorimeter is very short
(~3 µs), lamp interference during acquisition of decay curves is minimized. This allows
the researcher to follow the decay of samples an order-of-magnitude faster than can be
achieved with conventional systems that depend on mechanical choppers.
To run phosphorescence experiments, the
FL-1040 dual-lamp housing is required, as
well as the FL-1042 phosphorescence up-
grade, which adds a controller and electron-
ics. To use the phosphorimeter, turn the ex-
ternal knob on the lamp housing counter-
clockwise to
Alternate Lamp
:
This action rotates a mirror inside, directing light from the flash tube to the sample:
External knob rotates internal mirror.
Pulsed lamp
CW lamp
Mirror
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