CALIBRATION OF FAST NEUTRON FILM BADGES

Journal Article · Fri Dec 01 04:00:00 EST 1961 · Minerva nucleare

OSTI ID:4790753

Amadesi, P; Cavallini, A; Rimondi, O

After the introduction of fast neutron detection with nuclear emulsions and the description of a film-badge for personnel dosimetry of neutrons, the method used for the calibration is illustrated. The work consists of an evaluation of the doses and relative standard deviation. The smallest dose that can be revealed is l5 mRem and the highest is l5 rem. The standard deviation changes from a minimum of about l5% for the highest dose, to a msximum of about 27% for the smallest one. A l00 mc RaD-Be source is used for the calibration. The neutron flux is known with a standard deviation of 15%. A graph was drawn up to determine the per cent standard deviation corresponding to the number of the traces scanned. This graph is useful for microscopists during the scanning of the emulsions. Other possible causes of errors were evaluated: influence of fading and of the neutron incidence angle, and fog due to the gamma radiation. From these results it is possible to determine the correction coefficients and improve the precision on the dose measured. (auth)

• Research Organization: CNEN, Bologna; and Universita, Bologna
• NSA Number: NSA-16-016615
• OSTI ID: 4790753
• Journal Information: Minerva nucleare, Journal Name: Minerva nucleare Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: Italian

Related Subjects

ANGULAR DISTRIBUTION
DIAGRAMS
EFFICIENCY
ELECTRIC ARCS
FAST NEUTRONS
FILM BADGES
GAMMA RADIATION
HARDNESS
HEALTH AND SAFETY
MAGNESIUM
MELTING
MICROSCOPY
MIXING
NEUTRON FLUX
NEUTRONS
NUCLEAR EMULSIONS
PERSONNEL
PHOTOGRAPHIC FILM DETECTORS
PREPARATION
QUALITATIVE ANALYSIS
RADIATION DETECTORS
RADIATION DOSES
REDUCTION
SODIUM
STANDARDS
USES
ZIRCONIUM
ZIRCONIUM CHLORIDES