the function of -70 for X-ray film
Mad Dan Eccles
rpgrant at molbiol.ox.ac.uk
Wed Nov 1 09:58:30 EST 1995
In article <199510281917.OAA13346 at visar.wustl.edu>, nikolaic at VISAR.WUSTL.EDU (Nikolai Chitaev) writes:
>> I have a question to ask. What is the real function of exposure
>> the p32 X-ray film in -70 c?
> I guess that at -70oC your ENHANCEMENT SCREENs will reflect emmited
> b-particles toward the film, so providing more energy otherwise being
No. The screen actually phosphoresces (or fluoresces); the b-particle hits
the screen, a photon(s) of light then comes back and darkens the film.
Richard P. Grant MA DPhil rpgrant at molbiol.ox.ac.uk
Nuffield Department of Obstetrics and Gynaecology, University of Oxford.
"Winds light to variable"
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