Actually, the light-yield values of common scintillators are evaluated by pulse height
analysis, and with the present technologies available to determine the scintillation light yield of slow materials that have a scintillation decay time longer than 100 ys is difficult.
Parameters utilized were scan rate = 20 Vs-1; pulse width tp = 50 ms; step time = 100 ms; pulse height
E = 25 mV.
These were defined as an acceptable curves on visual inspection and in-device quality index of >80% derived from an algorithm including average pulse height
, pulse height
variation, diastolic variation, and the maximum rate of rise of the peripheral waveform.
Rather than using pulse height
data acquisition and analysis, the samples are evaluated only to determine if the PMTs are emitting a signal above a preset threshold current.
First, they were using a Coulter Model S+I, which used the cyanmethemoglobin method for hemoglobin determination and pulse height
determinations for MCV.
Three additional reflected pulses follow, but these are 11, 20 and 24 dB below the initial pulse height
This curve is effectively the integral of the single photoelectron pulse height
distribution (approximately a Gaussian).
is adjustable between 100 mV and 24 V.
Shimadzu exhibited its OES-5500 optical emission spectrometer employing pulse height
distribution analysis for increased sensitivity to trace concentrations.
varied by more than 10%) were discarded and repeated.
601-1988 standard, NT1s marketed in North America should support the 1992 pulse height
requirement of 2.