Study of the breakup reaction B-8->Be-7+p: Absorption effects and E2 strength

被引：80

作者：

Kelley, JH

Austin, SM

Azhari, A

Bazin, D

Brown, JA

Esbensen, H

Fauerbach, M

Hellstrom, M

Hirzebruch, SE

Kryger, RA

Morrissey, DJ

Pfaff, R

Powell, CF

Ramakrishnan, E

Sherrill, BM

Steiner, M

Suomijarvi, T

Thoennessen, M

机构：

[1] MICHIGAN STATE UNIV, NATL SUPERCONDUCTING CYCLOTRON LAB, E LANSING, MI 48824 USA

[2] MICHIGAN STATE UNIV, DEPT PHYS & ASTRON, E LANSING, MI 48824 USA

[3] MICHIGAN STATE UNIV, DEPT CHEM, E LANSING, MI 48824 USA

[4] ARGONNE NATL LAB, DIV PHYS, ARGONNE, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.77.5020

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Distributions of parallel and transverse momenta for Be-7 fragments formed in the breakup of B-8 have been measured at 41A MeV. The p(parallel to) distributions are narrow (81 +/- 4 and 62 +/- 3 MeV/c FWHM for Be and Au targets, respectively), comparable to those of neutron halo nuclei. Reaction mechanisms influence the Be-7 momentum distributions, so they do not directly reflect the valence proton momentum wave function. We present reaction models that reproduce the distributions.

引用

页码：5020 / 5023

页数：4

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[1] Solar models with helium and heavy-element diffusion [J].