ON THE DETERMINATION OF RANDOM COINCIDENCES IN FAST-SLOW-COINCIDENCE-RATES

Journal Article · Fri Jul 01 04:00:00 EDT 1960 · Nuclear Instr. & Methods

DOI:https://doi.org/10.1016/0029-554X(60)90155-5· OSTI ID:4155561

Mayer-Kuckuk, T; Nierhaus, R

In some applications of fast-slow coincidence circuits, the random- coincidence rate is not small compared with the true-coincidence rate. In such cases it is usually necessary to correct for random coincidences. The randomcoincidence rate is considered as consisting of four parts (the first part corresponding to three randomly coincident pulses at the inputs of the slow triple coincidence circuit, and the other parts corresponding to the three pcssibilities of true coincidences between two pulses at two inputs randomly coincident with a pulse on the thind input of the slow circuit). The four parts can be determined separately either by calculations using measured coincidence resolving times or by counting with delay lines before the inputs of the slow- coincidence circuit. The determination of random coincidences by using only a delaying cable before one input of the fast-coincidence circuit does not appear appropriate. (auth)

• Research Organization: Max Planck Institut fur Kernphysik, Heidelberg, Ger'
• NSA Number: NSA-14-024290
• OSTI ID: 4155561
• Journal Information: Nuclear Instr. & Methods, Journal Name: Nuclear Instr. & Methods Vol. Vol: 8
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

CABLES
CIRCUITS
COINCIDENCE METHODS
DELAY LINES
ENGINEERING AND EQUIPMENT
MATHEMATICS
PULSES