MATTSON
FTIR Instructions
1.
Switch on: PEM box, GWC Box,
Oscilloscope and Optically isolated interface box (black box at the back
of FTIR). Warm up
electronics 15-20 mins.
2.
Cool down MCT detector with liquid N2 until red indicator light is
off.
3.
Place sample in holder (should see sine signal on oscilloscope).
4.
On computer, open the program "WinFirst". Wake up FTIR by clicking
"PM single" tab in the "MACRO" window. If the machine is not responding, press
"ESC" to abort, but should see the indicator light on FTIR flashing
much faster.
5.
Use "PM single" to obtain single scan measurement, "PM" for
multiple scans. When using "PM", need to type in folder name and
sample name. The sample name should not exceed 8 characters.
The
following scan parameters are automatically loaded in the program.
Parameter
for
resolution
4
Blocks
20
Background
scans
10
Sample
measurement
scans
50
Start
wavenumber
4000 cm-1
Stop
wavenumber
1 (or 1000) cm-1
6.
Wait 10-15 min for the PM scans to finish, then transfer file to Mac. (FETCH
will not work when FTIR is scanning)
7.
Data is fitted using mid-ir
macro procedure. Change
file extension from ".tbl" to ".txt", then load as
"General text".
a.
Name xwave:
wn***, ywave: tr***
b.
Run "Setup" macro
c.
Define xtop, ytop, xbot, ybot in command window
d.
Run cnc('***') macro to fit
e.
Play with
above parameters and curvature (dr),
and rerun by typing recnc(****)
until get best spectrum.