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

Journal Article · Mon Sep 09 04:00:00 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), Journal Name: Physical Review Letters; (United States) Vol. 67:11; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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MILLISEC LIVING RADIOISOTOPES
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