Showing papers by "Hyun-Chul Kim published in 1975"
TL;DR: In this paper, in-beam γ-rays induced by 15−25 MeV α-partictes on 58 Ni, 26−48 MeV 12 C ions on 50 Cr and 30−60 MeV 16 O ions on 46 Ti were investigated via the study of inbeam λ-ray angular distribution and γγ coincidence measurements.
18 citations
TL;DR: In this article, the ordering and decay modes of the yrast levels of 56 Co were determined from analyses of the in-beam γ-ray angular distribution and γγ coincidence measurements.
10 citations
TL;DR: In this article, the half-life T$sub 1$/$sub 2$ of the 0$sup +$' state was determined to be 15.8 +- 0.9 ns by delayed coincidence techniques.
Abstract: The 0$sup +$' state at 937 keV in $sup 72$Se is unusual in that it is only 75 keV above the first excited 2$sup +$ state. The half-life T$sub 1$/$sub 2$ of the 0$sup +$' state was determined to be 15.8 +- 0.9 ns by delayed coincidence techniques. The ratio of the E0/E2 decays was measured to be 0.37 +- 0.23 and the reduced monopole matrix element rho was calculated to be 0.176/sub - 0.070//sup +0.048/. The B(E2) value of the 75-keV transition was deduced to be 36 +- 7 single-particle units. This large B(E2) value indicates that the 0$sup +$' state is collective. These data are interpreted in terms of a coexistence of spherical and deformed shapes.
5 citations
5 citations
TL;DR: The absolute cross sections for a number of different reactions resulting from the bombardment of Ni ions with 38.5, 41.0, 43.5 and 51.0 MeV were determined from the in-beam yields observed from the decay of resulting radioactivities, and from yields of inbeam $\ensuremath{\gamma}$ rays as mentioned in this paper.
Abstract: The absolute cross sections for a number of different reactions resulting from the bombardment of $^{61}\mathrm{Ni}$ with 38.5, 41.0, 43.5, 46.0, 48.5, and 51.0 MeV $^{16}\mathrm{O}$ ions were determined from $\ensuremath{\gamma}$-ray yields observed from the decay of resulting radioactivities, and from yields of in-beam $\ensuremath{\gamma}$ rays. The total cross section was compared to an optical-model calculation. The relative population of the reaction products was compared to calculations for the statistical decay of a compound nucleus by $n$, $p$, and $\ensuremath{\alpha}$ evaporation. This model does account for the general features of the experimental results, and agrees reasonably well with the stronger exit channels.
2 citations
2 citations