Spectroscopy of 6Li using the ³He(7Li, alpha)6Li reaction

AUTOR(ES)

Kuramoto, R., Lichtenthäler, R., Lépine-Szily, A., Guimarães, V., Lima, G. F., Benjamim, E., Faria, P. N. de

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2004-09

RESUMO

The spectroscopic study of unbound states in the 6Li nucleus was performed by measuring the energy spectrum of the alpha-particles emitted from the transfer reaction ³He(7Li, alpha)6Li. The 7Li beam at E Lab = 31.2MeV was produced at the São Paulo Pelletron accelerator. A ³He gas cell was used as target. alpha-Particle spectra were measured from thetaLab = 8º up to thetaLab = 20º with steps of 1º. Due to its positive Q = +13.3MeV, the ³He(7Li, alpha)6Li reaction favours the population of states in 6Li at high excitations energies up to about 20MeV. We observed resonances at 17.29MeV, 15.31MeV, and a new state at 12.45MeV, in addition to all previously known states of 6Li. An Â-Matrix analysis was performed and the positions and widths of these states were extracted.

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