CONTINUOUS $gamma$-RAY THICKNESS GAGE OPERATING WITH A SCINTILLATION COUNTER

Journal Article · Fri Dec 01 04:00:00 EST 1961 · Energia es Atomtech.

OSTI ID:4840337

Barta, L; Kakas, J; Nagy, M; Varga, K

The first radioactive thickness gages made use of beta active sources connected to an ionization chamber. The Radioisotope Laboratory of the Csepel Iron & Metal Works developed a new, continuous instrument based on the use of gamma sources, used for controlling the wall thickness of oxygen cylinders fabricated at the plant. The measurements are based on the well-known exponentiaI attenuation law. The device includes a radiation source, a detector, and a measuring instrument. Several source materials were tested, including Tl/ sup 204/, Tm/sup 170/, Ir/sup 192/, Cs/sup 137/, and Co/sup 60/; the detecting system consists of a NaI(Tl) scintillation counter with a 2-stage photomultiplier. The source, fastened at the end of a rod, is inserted into the rolating metallic cylinder while the detecting unit is inserted into the rotating metallic cylinder while the detecting unit is placed on a table at a distance of about 30 cm. Care is taken to eliminate mechanical vibration of the systems during the measurements; the line voltage is also stabilized. The instrument was found to be very useful for continuous automatic process control, for sorting goods according to wall thickness, and for recording highest and lowest values. The errors did not exceed 0.8%. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-019088
• OSTI ID: 4840337
• Journal Information: Energia es Atomtech., Journal Name: Energia es Atomtech. Vol. Vol: 14
• Country of Publication: Country unknown/Code not available
• Language: Hungarian

Related Subjects

CESIUM 137
COBALT 60
CYLINDERS
ENGINEERING AND EQUIPMENT
ERRORS
GAGES
GAMMA RADIATION
GAMMA SOURCES
IONIZATION CHAMBERS
IRIDIUM 192
LABORATORY EQUIPMENT
OXYGEN
SCINTILLATION COUNTERS
SODIUM IODIDES
THALLIUM 204
THICKNESS
THULIUM 170