DOSIMETRY WITH SMALL SILVER-ACTIVATED GLASS RODS

Journal Article · Fri Dec 01 04:00:00 EST 1961 · Health Physics (England)

DOI:https://doi.org/10.1097/00004032-196111000-00008· OSTI ID:4798858

Barr, N F; Stark, M B; Hands, J; Laughlin, J S

The use of small silver-activated phosphate glass rods for ionizing radiation dosimetry is described. Convenient methods for the handling, reading, and calibration of the rods are reported. With the apparatus described fluorescence of the rods may be determined with a precision of 4%. With 20 Mev electrons and the gamma rays from radium, iridium-192, and cobalt-60, the smallest detectable absorbed dosc is approximately 30 rads. With 250 and 180 kvp x rays the smallest detectable dose is 3 rads. Variation in sensitivity of the rods with depth in an absorbing medium such as water is small with 22 Mev electrons, 250 kv-p x rays and l80 kvp x rays incident on the surface. - With the gamma rays from cobalt-60, a 40% change in sensitivity was observed. The effects of exposure temperature, storage time, and ultraviolet exposure on the fluorescence of the rods are reported as well as the results of a limited number of applications. (auth)

• Research Organization: Sloan-Kettering Inst., New York
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-009053
• OSTI ID: 4798858
• Journal Information: Health Physics (England), Journal Name: Health Physics (England) Vol. Vol: 7: Nos. 1 and 2; ISSN HLTPA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ACTIVATION
COBALT 60
EFFICIENCY
ELECTRONS
ENERGY
FLUORESCENCE
GAMMA RADIATION
GLASS
HEALTH AND SAFETY
IONIZATION
IRIDIUM 192
IRRADIATION
LEVELS
PERFORMANCE
PHOSPHATES
QUANTITY RATIO
RADIATION DOSES
RADIUM
RODS
SENSITIVITY
SILVER
STANDARDS
SURFACES
TEMPERATURE
TUBES
ULTRAVIOLET RADIATION
WATER
X RADIATION