Elsevier

Nuclear Physics A

Volume 228, Issue 2, 12 August 1974, Pages 229-245
Nuclear Physics A

The sequential decay 10B(α, α)10B(α)6Li at Eα = 24 MeV

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Abstract

In the break-up reaction 10B(α, 2α)6Li at Eα = 24 MeV, the sequential decay via excited levels of 10B is found to be the dominant mechanism. Expected contributions of α-α quasifree scattering and sequential decay via 8Be levels are negligible. The kinematically complete, coplanar α-α coincidence measurements at various angle combinations could not be analysed consistently without postulating 17 new levels of 10B with excitation energies between 8.665 and 16.0 MeV. Angular distributions of the second-step decay are well described by model independent calculations including the polarization of the intermediate nucleus. Lower limits for the spins of six levels could be extracted.

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Cited by (4)

Present address: Physikalisch-Technische Bundesanstalt, Braunschweig, Germany.

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