1 - IAEA Nuclear Data Services

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have been performed on natural samples of Pd; Ru, Mo
and Hf. For Pd, Ru and Mo capture gamma-ray spectra
have been observed to select the resonances due to
odd nuclei. The resonance peaks in time-of-flight
spectra of singles and coincidences have been analysed
by measuring their integral or partial areas. In the
more complicated case of Hf, the known parameters have
been used to obtain with a best fit procedure the relative
strength of the resonances. To this end our
shape analysis program has been modified to take into
account multiple scattering effects. The spin could
105
be assigned to 50 resonances of Pd, $6 resonances
of 99 ,101 Ru, 24 resonances of °5>97Mo and 45 reso_
177
nances of "Hf. The assignments are listed in the
following tables (I, II, III, IV).
2.9. Miscellaneous
2.9.1. Kinematics of Nuclear Reactions
M. Coppola, H. Horstmann, H.H. Knitter, H. Liskien,
H. Schmid, J. Winter
Several calculations have been performed on the kinematics
of nuclear reactions, especially for the production
of monoenergetic neutrons T18] and of the
non-relativistic T19] and relativistic T20] parameters
of nuclear reactions.
2.9.2. Instrumentation of Analog Signals and Analog-to-Digital
Conversions; Pulse Height Converter
H. Yerelst, H. Meyer
A servostabilized pulse height converter of great linearity,
stability and speed, especially useful for
precision •y- s P ec 't ;:i: ' osco Py with germanium detectors was
developed. Because of the analog controlled sliding
energy window foreseen, the system allows to measure
also high energy -^-spectra with high resolution, if
small memories are used for storage. In such a case