© Ultrafast Systems LLC /Vernier Software & Technology
21
6 Data
Treatment
6.1 Data
Acquisition
The Vernier Flash Photolysis Spectrometer Software will produce a file containing two columns of
numbers in CSV format. One column (#1) is time, the other (#2) is voltage from the detector. On the
computer screen, you will observe the waveform built from these columns. These are your raw data.
Once you have acquired the data files you will need to transfer them to the Logger
Pro
or Excel for
analysis. For Figure 6, the raw data were imported into Logger
Pro
. In cases where the voltage has been
generated from an emission experiment (no probe beam), the kinetic analysis can proceed with the raw
data as displayed. In an absorption experiment, further processing is necessary before kinetic analysis
can proceed. In an absorption experiment, the detector monitors the intensity of light transmitted by the
sample as a function of time prior to, during, and after the firing of the photoflash.
Figure 6:
Example of a voltage-time waveform after importing into Logger
Pro
