The sup 11 Li neutron halo radius from pion double charge exchange

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We have analzed the pion 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 and 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} 0.8}{sup +0.6} fm. It is shown that the pion cross-section falls off as the sixth power of the assumed neutron halo radius, so that a radius greater than about 6 fm is ruled out. Indeed, pion double charge is found to act as an unusually sensitive probe of … continued below

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5 pages

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Hayes, A.C. January 1, 1991.

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We have analzed the pion 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 and 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} 0.8}{sup +0.6} fm. It is shown that the pion cross-section falls off as the sixth power of the assumed neutron halo radius, so that a radius greater than about 6 fm is ruled out. Indeed, pion double charge is found to act as an unusually sensitive probe of the properties of this exotic neutron rich nucleus. 9 refs., 2 figs.

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5 pages

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OSTI; NTIS; INIS; GPO Dep.

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  • International workshop on pions in nuclei, Penyscola (Spain), 2-9 Jun 1991

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  • Other: DE91017826
  • Report No.: LA-UR-91-2852
  • Report No.: CONF-9106194--4
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5442829
  • Archival Resource Key: ark:/67531/metadc1071793

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  • January 1, 1991

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  • Feb. 4, 2018, 10:51 a.m.

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  • May 29, 2019, 1 p.m.

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Hayes, A.C. The sup 11 Li neutron halo radius from pion double charge exchange, article, January 1, 1991; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1071793/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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