Nuclear structure study with inelastic electron scattering from 27Al

✍ Scribed by R.A. Radhi

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 173 KB
• Volume: 707
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(02)00794-7

✦ Synopsis

A microscopic theory is employed to include the effects of higher configurations outside the sd-shell model space, which are called core-polarization effects to describe the inelastic electron scattering form factors for even-parity states of 27 Al. Higher configurations are taking into account through first-order perturbation theory, which allows particle-hole excitations from the 1s-and 1pshells core orbits to the higher 2s-1d and 1f -2p shells with 2 hω excitations. It is shown that the core-polarization effects are essential in obtaining a reasonable description of the data with no adjustable parameters. The calculations based on the Wildenthal interaction for the sd-shell model space and on the modified surface delta interaction (MSDI) for the core-polarization effects.