Hi--

>Thank you for your (much complete) advice, Bob.

You're welcome!

>It must have passed much time since I did photography in a more
>dedicated (although amateur) manner. In fact, it's naive to ask for
>latitude in a slide film ... :-)

Ah, yes, but it still comes up often on the rec groups.....;-)

>After some more thinking and discussion, we've come to the conclusion
>that we have no need of colour, so it has no sense choosing slide. We
>are interested in seeing forms and the distritution of light padrons.
>Then we can put artificial colours digitally if we want some more
>visual impact.
>
>The thing we want to photograph is a nuclear fusion plasma inside a
>machine that's called tokamak. Although this comparation may
>scandalise any physicist, the tokamak may be (badly) described as a
>gigantic fluorescent lamp.
>Regards
>= J. Mario Pires - CFN/IST, Lisboa, Portugal
>= http://www.cfn.ist.utl.pt/~stego

That sounds familiar - there may be one at Cornell....
If you are shooting narrow angle, you may need very high contrast
to show differentiation? Any B & W film, pushed, should work, but
Kodak T-Max 100, 400, and 3200 may be good choices for high contrast,
depending on desired speed. Kodak Technical Pan would be excellent for
high-contrast, also. Many films would work for normal contrast. For low
contrast (and VERY wide range), Tri-X at 25 ASA in a Phenidone
(1-phenyl, 3-pyrozolidone [spelling?])/Sodium-Sulphite developer
(POTA) gives about a 15+ stop range.
David Ruether