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

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5442829

Hayes, A C

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5442829
• Report Number(s): LA-UR-91-2852; CONF-9106194-4; ON: DE91017826
• Resource Relation: Conference: International workshop on pions in nuclei, Penyscola (Spain), 2-9 Jun 1991
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BORON 11 TARGET
PION MINUS REACTIONS
ANGULAR DISTRIBUTION
CHARGE EXCHANGE
CROSS SECTIONS
EXPERIMENTAL DATA
GROUND STATES
LITHIUM 11
NEUTRONS
SIZE
ALKALI METAL ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
FERMIONS
HADRON REACTIONS
HADRONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
LITHIUM ISOTOPES
MESON REACTIONS
MILLISEC LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
PION REACTIONS
RADIOISOTOPES
TARGETS
651320* - Nuclear Properties & Reactions
A=6-19
Experimental