Exotic Properties of Light Nuclei and Their Neutron Capture Cross Sections

نویسنده

  • A. Mengoni
چکیده

We have investigated the implications of the neutron halo configuration, observed in the ground-state of some neutron-rich light nuclei, on neutron radiative transition processes. In particular, we have studied the influence of the neutron halo on the direct radiative capture (DRC) process. The energy dependence as well as the strength of E1 emission due to incident p-wave neutrons is strongly influenced by the halo configuration of the residual nucleus capturing state. We have compared the calculated Be(n, γ)Be DRC cross section with that derived from the experiment in the inverse kinematics (Coulomb dissociation of Be). We show from the comparison that some important information on the structure of the halo nucleus Be can be derived.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei

The Relativistic Continuum Hartree-Bogoliubov (RCHB) theory, which properly takes into account the pairing correlation and the coupling to (discretized) continuum via Bogoliubov transformation in a microscopic and self-consistent way, has been reviewed together with its new interpretation of the halo phenomena observed in light nuclei as the scattering of particle pairs into the continuum, the ...

متن کامل

Analytical potential for the elastic scattering of light halo nuclei in the Coulomb field of heavy targets

Light halo nuclei are exotic and weakly-bound systems that have attracted much interest during the past decades [1]. In particular neutron-rich nuclei near the dripline provide a new path for studying nuclear matter and correlations at low densities. In these nuclei, the halo is often formed by one or several loosely attached (valence) neutrons with binding energies of less than 1 MeV and with ...

متن کامل

Uncertainties in direct neutron capture calculations due to nuclear structure models

The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. For spherical nuclei close to the dripline the statistical model (Hauser-Feshbach) approach is not applicable and direct contributions may dominate the cross sections. For neutron-rich, even-even Sn targets, we compare the resulting neutron capture cross sections when consistently taki...

متن کامل

Proton reaction cross sections as measures of the spatial distibutions of neutrons in exotic nuclei.

Proton and neutron densities from Skyrme-Hartree-Fock calculations of a number of nuclei with masses ranging from 28 to 58 have been used to generate optical potentials for proton elastic scattering. Those potentials, generated by folding the structure functions with effective in-medium nucleon-nucleon (NN) interactions, have been used to evaluate proton total reaction cross sections; cross sec...

متن کامل

Improved Empirical Parametrization of Fragmentation Cross Sections

A useful tool to predict production cross sections of exotic nuclei in high-energy fragmentation reactions is a universal analytical formula called EPAX [1, 2]. This formula allows to calculate the yields from fragmenting all non-fissile projectiles in the range of projectile masses between about 40 to 209. The cross sections are assumed to be energy-independent and appear to be reliable at inc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1996