1 - IAEA Nuclear Data Services

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2. Thermal-neutron capture y-ray spectroscopy.
P. Spilling, H. Gruppelaar, A.M.F. Op den Kamp and; A.M.J. Spits.
A thermal-neutron "beam from the horizontal radial "beam hole of the Dutch
High Flux Reactor is obtained with a filter method. The thermal-neutron
7 —2 —1
flux is about 10 cm s~ . The y-rays from several (n,y) reactions were
studied with a high-resolution Ge(Li) spectrometer and a l*096-channel
analyser. From the measurements the following physical information was
obtained: y-ray energies and intensities, excitation energies, Q-values
and decay schemes. The reactions, which have been studied, are:
2 Vg(n,y) 25 Mg(ref.l), 25 Mg(n,y) 26 Mg(ref.l), ^Cain.y) ^ 1 Ca(ref.2),
12 C(n,y) 13 C(ref.3), 1T F(n,y) 20 F(ref.3) and ^Ca(n,y) ** 5 Ca(ref.h).
These investigations are a part of the program of the Dutch Foundation for
Fundamental Research on Matter ("Stichting voor Fundamenteel Onderzoek
der Materie", F.O.M.).
References
1) P. Spilling, H. Gruppelaar and A.M.F. Op den Kamp,
Nucl. Physics A 102 (196?) 209.
2) H. Gruppelaar and P. Spilling,
Nucl. Physics A 102 (1967) 226.
3) P. Spilling, H. Gruppelaar, H.F. de Vries and A.M.J. Spits,
to be published.
k) H. Gruppelaar, P. Spilling and A.M.J. Spits,
to be published.