Invariant-mass spectroscopy of 10Li and 11Li
Creators
- 1. Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
- 2. Technische Hochschule Darmstadt (Germany). Inst. fuer Kernphysik
- 3. Chalmers Univ. of Technology, Goeteborg (Sweden). Inst. of Physics
Description
Break-up of secondary 11Li ion beams (280 MeV/nucleon) on C and Pb targets into 9Li and neutrons is studied experimentally. Cross sections and neutron multiplicity distributions are obtained, characterizing different reaction mechanisms. Invariant-mass spectroscopy for 11Li and 10Li is performed. The E1 strength distribution, deduced from electromagnetic excitation of 11Li up to an excitation energy of 4 MeV comprises ∼8% of the Thomas-Reiche-Kuhn energy-weighted sum-rule strength. Two low-lying resonance-like structures are observed for 10Li at decay energies of 0.21(5) and 0.62(10) MeV, the former one carrying 26(10)% of the strength and likely to be associated with an s-wave neutron decay. A strong di-neutron correlation in 11Li can be discarded. Calculations in a quasi-particle RPA approach are compared with the experimental results for 10Li and 11Li. (orig.)
Availability note (English)
Available from FIZ Karlsruhe.Additional details
Publishing Information
- Imprint Pagination
- 38 p.
- Report number
- GSI--97-14(prepr.)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 28046001
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data, Non-conventional Literature
- Descriptors DEI
- CARBON 12; CARBON 12 TARGET; CORRELATIONS; COULOMB EXCITATION; DIFFERENTIAL CROSS SECTIONS; ENERGY SPECTRA; EXCITED STATES; EXPERIMENTAL DATA; E1-TRANSITIONS; GEV RANGE 01-10; GIANT RESONANCE; INTEGRAL CROSS SECTIONS; KNOCK-OUT REACTIONS; LEAD 208; LEAD 208 TARGET; LITHIUM 10; LITHIUM 11; LITHIUM 11 REACTIONS; LITHIUM 9; MULTIPLICITY; NEUTRON EMISSION; NEUTRONS; NUCLEAR DECAY; QUASI-ELASTIC SCATTERING; S WAVES; STRENGTH FUNCTIONS; SUM RULES
- Descriptors DEC
- BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ISOTOPES; CROSS SECTIONS; DATA; DECAY; DIRECT REACTIONS; ELEMENTARY PARTICLES; EMISSION; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EQUATIONS; EVEN-EVEN NUCLEI; EXCITATION; FERMIONS; FUNCTIONS; GEV RANGE; HADRONS; HEAVY ION REACTIONS; HEAVY NUCLEI; INFORMATION; ISOTOPES; LEAD ISOTOPES; LIGHT NUCLEI; LITHIUM ISOTOPES; MILLISEC LIVING RADIOISOTOPES; MULTIPOLE TRANSITIONS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUMERICAL DATA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PARTIAL WAVES; RADIOISOTOPES; RESONANCE; SCATTERING; SPECTRA; STABLE ISOTOPES; TARGETS