A brief introductory survey of gamma-ray detector arrays and in-beam electr
on spectrometers developed during the last three lustra is followed by a br
oad discussion of the general requirements for single and multiple in-beam
e-gamma spectrometers. A detailed analysis is made of a few important tools
for reducing the low-energy electron background (i.e. simultaneous E-Bp se
lection, true and random coincidence rates, EM static fields around the tar
get region). This survey and discussion are illustrated by the results of s
everal in-beam e-gamma measurements dealing with nuclear spectroscogic inve
stigations of a few medium and heavy nuclei. (C) 1999 Elsevier Science B.V.
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