Momentum distributions of {sup 9}Li fragments from the breakup of {sup 11}Li and the neutron halo

Journal Article · Thu Jun 01 04:00:00 EDT 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.51.3116· OSTI ID:55961

Orr, N A; Anantaraman, N; Austin, S M; Bertulani, C A; Hanold, K; Kelley, J H; Kryger, R A; Morrissey, D J; Sherrill, B M; Souliotis, G A; Steiner, M; Thoennessen, M; Winfield, J S; Winger, J A; Young, B M ^[1]

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1. LPC-ISMRA, Boulevard du Marechal Juin, 14050 Caen Cedex (France)

The inclusive parallel momentum distributions of {sup 9}Li fragments from the breakup of a secondary {sup 11}Li beam have been measured at 66 MeV/nucleon over a wide range of targets ({sup 9}Be to {sup 238}U). The measurements were performed using a zero-degree fragment separator as an energy-loss spectrometer operating in a dispersion matched mode. Earlier measurements have been extended here to the case of breakup by {sup 238}U where a distribution with a width of FWHM=38.1{plus_minus}1.9 MeV/{ital c} was observed. Together with a remeasurement of breakup on {sup 93}Nb (FWHM)=42.8{plus_minus}2.6 MeV/({ital c}) a weak dependence of distribution width on target nucleus was observed. A discussion of the nature of the momentum distributions and relationship to the structure of the halo is presented in the light of recent calculations. It is concluded that the {sup 9}Li fragment parallel momentum distributions are relatively insensitive to the reaction and reflect the extended neutron distribution of the halo.

• OSTI ID: 55961
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 51; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BERYLLIUM 9 TARGET
BREAKUP REACTIONS
DISTRIBUTION FUNCTIONS
LINEAR MOMENTUM
LITHIUM 11 REACTIONS
LITHIUM 9
MEV RANGE 100-1000
NEUTRONS
NIOBIUM 93
NUCLEAR FRAGMENTS
URANIUM 238 TARGET