On the relation between the statistical γ-decay and the level density in 162Dy

Radiative strength functions inMo93−98

“…[13,15] and references therein. For each initial excitation energy E i , determined from the ejectile energy and reaction Q value, γ-ray spectra are recorded.…”

“…The method is based on the extraction of primary γ-ray spectra at various initial excitation energies E i measured in particle reactions with one and only one charged ejectile. From such a set of primary γ-spectra, nuclear level densities and RSFs can be extracted [13][14][15]. The level density reveals essential nuclear structure information such as thermodynamic properties and pair correlations as function of temperature.…”

Level densities andγ-ray strength functions inYb170,171,172

“…In these regions, an experimental technique recently developed by the Oslo Cyclotron Group provides valuable data. This method allows one to determine level densities and radiative strength functions simultaneously [5,6] from the primary γ-ray spectra. The advantage of this method is that it provides data on nuclear level densities and radiative strength functions in regions where there is little information and data is difficult to obtain.…”

“…Even if different states are populated, the assumption is still valid for statistical γ decay, which depends only on the γ-ray energy and the number of available final states. These assumptions have been investigated extensively over the years by the Oslo group and shown to work reasonably well [6]. The entries of the first generation matrix P are the probabilities P (E x , E γ ) that a γ-ray of energy E γ is emitted from excitation energy E x .…”

Level density andγstrength function in162Dyfrom inelastic3Schiller1, Guttormsen2, Melby3 et al. 2000Phys. Rev. CSelf Cite183141View full textAdd to dashboardCite

“…Recently, experimental level densities in 69 As and 70 Ge over a large excitation energy interval of 5-24 MeV have been reported [4], obtained from proton evaporation spectra of 12 C induced reactions. Also the Oslo cyclotron group has reported on a new method to extract level density and γ strength function from primary γ spectra (see [5] for the basic assumptions and [6] for the method). This method has the advantage that the level density is deduced from γ transitions, thus the nucleus is likely to be thermalized and the measured level density is supposed to be independent of the formation mechanism of the excited nucleus.…”