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arXiv 1409.0108nucl-th
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具有库仑-斯特米安基的晕核

Halo nuclei with the Coulomb-Sturmian basis

M. A. Caprio, P. Maris, J. P. Vary

摘要:

在大半径(高斯渐近)的振子函数的快速衰减,使他们不适合描述的渐近性质的核波函数,一个问题,这成为特别严重的晕核。我们考虑从头算无核心配置相互作用(NCCI)计算的替代基础,建立从库仑-Sturmian径向函数,允许现实的(指数)径向衰减。NCCI计算进行了富中子的He同位素,并估计了质子和中子分布的RMS半径。

英文摘要:

The rapid falloff of the oscillator functions at large radius (Gaussian asymptotics) makes them poorly suited for the description of the asymptotic properties of the nuclear wave function, a problem which becomes particularly acute for halo nuclei. We consider an alternative basis for ab initio no-core configuration interaction (NCCI) calculations, built from Coulomb-Sturmian radial functions, allowing for realistic (exponential) radial falloff. NCCI calculations are carried out for the neutron-rich He isotopes, and estimates are made for the RMS radii of the proton and neutron distributions.

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