Portal de Periódicos da CAPES

Matter Radii of Light Halo Nuclei

1996; American Physical Society; Volume: 76; Issue: 21 Linguagem: Inglês

10.1103/physrevlett.76.3903

1092-0145

Jim Al-Khalili, J. A. Tostevin,

Atomic and Molecular Physics

We reexamine the matter radii of diffuse halo nuclei, as deduced from reaction cross section measurements at high energy. Careful consideration is given to the intrinsic few-body structure of these projectiles and the adiabatic nature of the projectile-target interaction. Using ${}^{11}$Li, ${}^{11}$Be, and ${}^{8}$B as examples we show that data require significantly larger matter radii than previously reported. The revised value for ${}^{11}$Li of 3.55 fm is consistent with three-body models with significant $1s$-intruder state components, which reproduce experimental ${}^{9}$Li momentum distributions following ${}^{11}$Li breakup, but were hitherto thought to be at variance with cross section data.