Halo states in nuclei

doi:10.1016/S0375-9474(98)00035-9

Nuclear Physics A

Volume 631, 2 March 1998, Pages 376-384

https://doi.org/10.1016/S0375-9474(98)00035-9 Get rights and content

Abstract

It is well-known that some nuclei in the vicinity of the drip lines develop a structure with a dilute mass distribution that extends very far away from the nuclear core. Such structures are referred to as nuclear halos. An overview of some recent experiments in the drip-line regions relevant for the understanding of the structure of halo states is given in this contribution.

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Cited by (5)

Breakup reactions of light and medium mass neutron drip line nuclei
2018, Progress in Particle and Nuclear Physics
Citation Excerpt :
During eighties and nineties it became possible to perform experiments with the beams of short-lived radioactive nuclei due to advances made in the technology of accelerators, ion sources and mass separators that enabled to produce, separate and accelerate the radioactive ions [1–7]. This led to the revelation of new features in the structures of such nuclei (see, e.g. Refs. [1,2,8–31]). These nuclei lie very close to drip lines (the limit of neutron or proton binding).
The formal theories of breakup reactions are reviewed. The direct breakup mechanism that is formulated within the framework of the post-form distorted-wave Born approximation, is discussed in detail. In this theory, which requires the information about only the ground state wave function of the projectile, the fragment–target interactions are included to all orders while fragment–fragment interaction is treated only in the first order. We put special emphasis on the breakup reactions of the near neutron drip line nuclei on heavy nuclear targets, which are dominated by the pure Coulomb breakup mechanism. The applicability of this theory to describe such reactions involving both spherical as well as deformed projectiles, is demonstrated by comparing the calculations with breakup data for total, energy and angle integrated cross sections and momentum distributions of fragments emitted in such reactions. Roles played by the pure Coulomb, pure nuclear and the Coulomb–nuclear interference terms in describing the breakup observables are discussed. Postacceleration effects in the Coulomb breakup of neutron halo nuclei are elaborated. The function of the pure Coulomb breakup mechanism in the one-neutron removal reactions of the type $A (a, b γ) X$ on heavy target nuclei is underlined. The relationship between the parallel momentum distribution of the fragments and the break down of the magic numbers as the neutron drip line is approached, is highlighted.
Knockout reaction mechanism for 6He +
2012, Plasma Science and Technology
Knockout reaction induced by 6He at 61.2 MeV/u
2011, Chinese Physics C
Knockout reaction mechanism studied by 6He projectile
2011, Science China: Physics, Mechanics and Astronomy
Two-body correlation contributions in halo nuclei with a relativistic Hartree approach
2004, Modern Physics Letters A

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Nuclear Physics A

Abstract

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Cited by (5)

Breakup reactions of light and medium mass neutron drip line nuclei

Knockout reaction mechanism for <sup>6</sup>He <sup>+</sup>

Knockout reaction induced by <sup>6</sup>He at 61.2 MeV/u

Knockout reaction mechanism studied by <sup>6</sup>He projectile

Two-body correlation contributions in halo nuclei with a relativistic Hartree approach

Part I. Invited paper plenary sessionHalo states in nuclei

Abstract

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Part I. Invited paper plenary session
Halo states in nuclei