SCINTILLATOR

Patent · Tue Apr 30 04:00:00 EDT 1963

OSTI ID:4696070

Rickard, J A

A scintillation detector adaptable for use in radiation well logging is patented. Earth formations surrounding a borehole are bombarded with neutrons, and the energies of the induced secondary particles are measured to obtain information concerning subsurface formations. The scintillation detector is designed to distinguish between electrical pulses caused by radiation and those caused by neutrons. Two photomultipliers are separated by a plurality of scintillating wafers or cylinders. The thickness of the scintillators is less than the path of electrons produced by rays, but greater than the path of protons produced by neutrons. The scintillations in adjacent scintillators are detected by different photomultipiiers. Therefore eiectrons have a high probability of being detected by both photomultipliers, and protons by just one. The outputs of the photomultipliers are fed into coincidence or anticoincidence circuits, thereby making it possible to count rays in the presence of neutrons, or vice versa. A pulse analyzer measures the amplitude and number of electrical pulses, thereby determining the energy and intensity of the incoming radiation. (M.P.G.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-025662
• Assignee: Jersey Production Research Co.
• Patent Number(s): US 3088030
• OSTI ID: 4696070
• Country of Publication: United States
• Language: English

Related Subjects

CIRCUITS
COINCIDENCE METHODS
ELECTRON BEAMS
ENERGY
GAMMA RADIATION
INSTRUMENTS AND INSTRUMENTATION
NEUTRONS
PHOTOMULTIPLIERS
PLANNING
PROTONS
PULSE ANALYZERS
PULSES
RADIATION DOSES
SCINTILLATION COUNTERS
SCINTILLATIONS
STATISTICS
THICKNESS
WELL LOGGING