“…Since capture in a single reso nance can be observed, much of the confusion regarding the usual two-spin state compound-nucleus population is thereby removed ; in addition, coin cidences from resonance capture have been observed, a unique feature (314,315). Although in wide use in solid state studies, only two of these neutron spectrometers are currently used for capture; results for tungsten and haf nium have been published by the Idaho nuclear group (367)(368)(369) and os mium, lanthanum, xenon, silver, and uranium have been studied by the Brookhaven group (312)(313)(314)(315) .…”