The electro-excitation form factors for low-lying 7Li nucleus

الملخص EN

The transverse electron scattering form factors have been studied for low - lying excited states of 7 Li nucleus.

These states are specified by Jπ T = 1 / 2- 1 / 2 (0.478MeV), 7 / 2- 1 / 2 (4.63MeV) and 5-/2 1/2 (6.68MeV).

The transitions to these states are taking place by both isoscalar and isovector components.

These form factors have been analyzed in the framework of the multi-nucleon configuration mixing of harmonic oscillator shell model with size parameter brms=1.74fm.

The universal two-body of Cohen-Kurath is used to generate the lp-shell wave functions.

The core polarization effects are included in the calculations through effective g-factors and resolved many discrepancies with experiments.

A higher configuration effect outside the lp-shell model space, such as the 2p-shell, enhances the form factors for q-values and reproduces the data.

The present results are compared with other theoretical models.

PACS : 25.3O.

Bf Elastic electron scattering - 25.30.Dh inelastic electron scattering to specific states - 21.60.Cs Shell model - 27.20.

+n 5 ≤ A ≥ 19