INVESTIGATION OF KODAK PERSONNEL MONITORING FILM TYPE 2 FOR POTENTIAL USE AT H.A.P.O.

Technical Report · Thu Apr 24 04:00:00 EST 1958

OSTI ID:4313702

Baumgartner, W V

Type 2 film was found to be suitable for personnel monitoring at HAPO. The film response to radiation, using standnrd darkroom practices is a curvilinear function. The film has a linear temperature gradient of 0.10 plus or minus 0.04 optical density/ deg F (95% confidence limit) over the temperature range of 66 to 74.2 deg F for the developer solution, and a linear time gradient of 0. 12 plus or minus 0.08 o.d./min (95% confidence limit) for the time interval 2 to 6 minutes in the developer solution. Time, temperature, snd radiation dose interact and produce second and third order effects which result in the accelerated development of high calibrated film more than that of low calibrated film. The lowest dosc that could be detected by Type 2 film is less than 1 mr of 34.3 kev x radiation or 15 mr radiun: gamma radiation using standard darkroom developing practices. X and gamma radiation with energies less than radium gamma darken the film more per unit dose with a maximum darkening being observed around 34 kev. A unit dose of uranium beta darkened the film about two- thirds as much as a unit dose of radium gamma. Using concentrated Farmers Reducer Solution to bleach the image on the sensitive side of the film, it is possible to measure more thn 500 r of radium gamma radiation using standard darkroom practices and HAPO type densitometers. The film exposed to radiation three months before developing had about 12% increase in density over the film exposed to radiation the day before developing. The increase in density seems to be a linear function. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-12-015722
• OSTI ID: 4313702
• Report Number(s): HW-55843
• Country of Publication: United States
• Language: English

Related Subjects

BETA PARTICLES
ENERGY
GAMMA RADIATION
MEASURED VALUES
MONITORING
PERSONNEL
PHOTOGRAPHIC FILM
PHYSICS
PREPARATION
RADIATION DOSES
RADIATIONS
RADIUM
TEMPERATURE
URANIUM
X RADIATION