| OCR Text |
Show 102 time greater than the largest lags from delay-independent sources. .]. Errors From Selection Time Bias B • M an LOfe This form of mean life error arises from applying a terion which depends upon the delay time of the event. the two general ways in which tilne bias Electronic selection. Quit bias exist. 1. Short the gate display scope tion was pulse(s). wice see long. .8 a week to With the that Seen This does not affect that the flat case was seen experiment, expected on top por- and the counts beyond about 9 some lower than'was checked was delayed 51 gate, in the course of the were lengths ensure That this is indeed the fSec points i;.:ribution. film reader selection. Each of the gate or once delay curves plotted 9 and 10 ex Several different modes of selection air- gate rise time, it will be the present A discussion of each follows. at least 11 will be rejected. We shall discuss enter into the can periment, 1) eleotronic selection, and 2) selection cri- finite fsec from nearly all in which the from the fitted dis shorter lags, however, except insofar tpe akground is incorrectly determined from the long lags. 2. Delayed anti-coincidence _./ gate from C2 or S4L arrives with triggering a •. If the delay greater than anti"'coincidence 1.5jU.sec, it is' unable to prevent the sweep from triggering, and therefore would per mi t be he counting of delays 1.5 p.sec that would otherwise rejected. To avoid traces with of grea tar than 54L' that are a this, the C2 gate is also used blank portion are rejected this method is unneeessar.y, since greater than 190 rov. But the to blank the trace, and all at the film reader. S4L-1 S4 pulse In the ca$e merely rejects 54 pulses is always visible for Teal |
