Shell-gap reduced level densities in ${}^{89,90}$Y

Abstract

Particle-$\gamma$ coincidences from the ${}^{89}$Y($p,p^{\prime }\gamma$)${}^{89}$Y and ${}^{89}$Y($d,p\gamma$)${}^{90}$Y reactions were utilized to obtain $\gamma$-ray spectra as function of excitation energy. The Oslo method was used to extract the level density from the particle-$\gamma$ coincidence matrices. The impact of the $N=50$ shell closure on the level densities is discussed within the framework of a combinatorial quasi-particle model.

9 pages, 9 figures

References in corpus (5)

• Extraction of level density and gamma strength function from primary gamma spectra
• Analysis of possible systematic errors in the Oslo method
• The SiRi Particle-Telescope System
• Nuclear level densities and gamma-ray strength functions in 44,45Sc
• Entropy of thermal quasiparticles in nuclei

Cited by in corpus (6)

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• Pairing phase transition: A Finite-Temperature Relativistic Hartree-Fock-Bogoliubov study
• Consistent optical potential for incident and emitted low-energy $\alpha$ particles. II. $\alpha$-emission in fast-neutron induced reactions on Zr isotopes
• Optical potential for incident and emitted low-energy $\alpha$ particles. III. Non-statistical processes induced by neutrons on Zr, Nb, and Mo nuclei
• Long-standing problem: The nuclear level density angular-momentum dependence and isomeric data assessment