Odd-Even Staggering of Nuclear Masses: Pairing or Shape Effect?

Odd-Even Staggering of Nuclear Masses: Pairing

The odd-even staggering of nuclear masses was recognized in the early days of nuclear physics. Recently, a similar e ect was discovered in other nite fermion systems, such as ultrasmall metallic grains and metal clusters. It is believed that the staggering in nuclei and grains is primarily due to pairing correlations (superconductivity), while in clusters it is caused by the Jahn-Teller e ect. ...

Quasi-γband and odd-even staggering effect in 102Ru

Isospin dependence in the odd-even staggering of nuclear binding energies.

The FRS-ESR facility at GSI provides unique conditions for precision measurements of large areas on the nuclear mass surface in a single experiment. Values for masses of 604 neutron-deficient nuclides (30 < or = Z < or = 92) were obtained with a typical uncertainty of 30 microu. The masses of 114 nuclides were determined for the first time. The odd-even staggering (OES) of nuclear masses was sy...

Revisiting the Even-odd Staggering in Fission-fragment Yields

The even-odd staggering observed in the experimental fission-fragment nuclear-charge yields is investigated over a wide systematics of fission fragments measured at Lohengrin in direct kinematics and at GSI in inverse kinematics. The general increase of the even-odd staggering in the fission-fragment charge yields towards asymmetric charge splits is explained by the absorption of the unpaired n...

THE EUROPEAN PHYSICAL JOURNAL PLUS Pairing effect on spectral statistics of even and odd mass nuclei

The interplay of pairing is explored for the spectral statistics of nuclear systems with emphasis on the nearest neighbor spacing distributions by employing the kernel density and maximum-likelihood estimation techniques. Different sequences prepared by all the available empirical data for low-lying energy levels of evenand odd-mass nuclei in the 34 ≤ A < 206 mass region. A deviation to more re...