Determination of the radius of the sup 11 Li neutron halo from pion double charge exchange

Journal Article · Mon Sep 09 00:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1395· OSTI ID:5244239

Gibbs, W R; Hayes, A C ^[1]

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1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico (USA)

We have analyzed the pion-induced double-charge-exchange data for the direct population of the ground state of {sup 11}Li by the {sup 11}B({pi}{sup {minus}},{pi}{sup +}){sup 11}Li reaction. We find that the measured cross section determines the rms radius of the last two neutrons in {sup 11}Li to be 5.1{sub {minus}0.9}{sup +0.6} fm, which corresponds to a total neutron rms radius for the nucleus of 3.28{sub {minus}0.33}{sup 0.24} fm. We show that for large assumed neutron-halo radii the cross section decreases as the radius of the halo to the inverse sixth power and that a radius of 12 fm leads to a cross section which is 3 orders of magnitude smaller than that measured.

• OSTI ID: 5244239
• Journal Information: Physical Review Letters; (United States), Vol. 67:11; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 11 TARGET
PION MINUS REACTIONS
LITHIUM 11
GROUND STATES
CHARGE EXCHANGE
ANGULAR DISTRIBUTION
CROSS SECTIONS
DATA ANALYSIS
MATRIX ELEMENTS
MEV RANGE 100-1000
SHELL MODELS
WAVE FUNCTIONS
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
FUNCTIONS
HADRON REACTIONS
ISOTOPES
LIGHT NUCLEI
LITHIUM ISOTOPES
MATHEMATICAL MODELS
MESON REACTIONS
MEV RANGE
MILLISEC LIVING RADIOISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PION REACTIONS
RADIOISOTOPES
TARGETS
653001* - Nuclear Theory- Nuclear Structure
Moments
Spin
& Models