Super-Allowed Beta-Decay of Nuclei at the Drip-Line

• We have investigated the continuous particle spectra following the beta decay of the neutron-rich nuclei that terminate the mass 6, 8, 9 and 11 isobaric chains. Strong beta transitions feeding the very top of the spectrum are found systematically. The favoured states are within a few MeV of the energy of the initial state. This phenomenon seems to be linked to the occurrence of a di-neutron structure or neutron halo in the drip-line nuclei.

Ämnesord

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Nyckelord

NEUTRON-RICH NUCLEI

SHELL-MODEL

HALO

DELAYED TRITON EMISSION

LIGHT-NUCLEI

LI-11

ENERGY-LEVELS

1ST OBSERVATION

CROSS-SECTIONS

LOW-LYING STATES

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