I had an hour to play with my digital camera that has been converted to take Infrared shots.
I read on the web that the white balance should be set to custom setting by photographing a white card. I then took shots with both JPEG and RAW. Below shows the two unadjusted files.


I had downloaded a Photoshop action to process files taken with infrared digital cameras. This increases the contrast and then does some colour swapping using Channel Mixer. This works well with the JPEG file that has had the white balance correction but also gives an interesting effect with the RAW file


Each of these files was then converted to BW with Channel mixer - here the RAW files, as expected, gives a superior result.


I obviously need to do a lot more experimentation and theoretical consideration to achieve a consistent result.