HIGHER ORDER CHANCE COINCIDENCES IN A FAST-SLOW COINCIDENCE ARRANGEMENT

Journal Article · Tue Nov 01 04:00:00 EST 1960 · Nuclear Instr. & Methods

DOI:https://doi.org/10.1016/0029-554X(60)90091-4· OSTI ID:4100045

Paul, H

An ordinary fast-slow coincidence measurement with two radiation detectors is considered. In addition to the chance coincidences due to two pulses (one from each detector) there are higher-order chance coincidences which require a total of three or four pulses and whose relative contributions to the counting rate increase with source strength. Formulas for these effects are given, and methods for measuring the corrections are discussed. For a source with a simple decay scheme and for the special cases of either very narrow or very wide analyzer channels it is shown that the higher-order corrections may be neglected if the single counting rates are small compared to the reciprocal resolving time of the slow coincidence circuit. (auth)

• Research Organization: Purdue Univ., Lafayette, Ind.
• NSA Number: NSA-15-009115
• OSTI ID: 4100045
• Journal Information: Nuclear Instr. & Methods, Journal Name: Nuclear Instr. & Methods Vol. Vol: 9
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CIRCUITS
COINCIDENCE METHODS
EFFICIENCY
ENGINEERING AND EQUIPMENT
MEASURED VALUES
NUMERICALS
PULSE ANALYZERS
PULSES
RESOLUTION