CONICAL PLASTIC SCINTILLATORS SHOW TOTAL GAMMA ABSORPTION

Journal Article · Thu Sep 01 04:00:00 EDT 1960 · Nucleonics (U.S.) Ceased publication

OSTI ID:4151534

Hine, G J; Cardarelli, J A

Total photon absorption, at least with low energy gamma and x rays, was observed in plastic scintillators. The best results were obtained with lead- loaded, conically-shaped scintillators surrounded by aluminuru oxide as a reflector. Low energy photons gave better absorption curves even poorer resolution than the higher energy photons. The best stintillation size for total absorption was found to be a function of energy. Surrounding the scintillator with aluminuru oxide instead of aluminum foil increased the pulse height slightly. The light output was increased by changing the shape from a cylinder to a truncated cone. By adding 2 wt.% lead to the plastic, the absorption of 123 kev gamma rays was increased by a factor of aporoximately 16, but reduced light output made resolution worse. (M.C.G.)

• Research Organization: Veterans Administration Hospital, Boston; and Boston Univ. School of Medicine
• NSA Number: NSA-14-023051
• OSTI ID: 4151534
• Journal Information: Nucleonics (U.S.) Ceased publication, Journal Name: Nucleonics (U.S.) Ceased publication Vol. Vol: 18, No. 9; ISSN NUCLA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALUMINUM
ALUMINUM OXIDES
CONFIGURATION
ENERGY
ENERGY LEVELS
ENGINEERING AND EQUIPMENT
FOILS
GAMMA RADIATION
LEAD
PHOSPHORS
PHOTONS
POLYMERS
PULSES
REFLECTION
RESOLUTION
SCINTILLATIONS
X RADIATION