Author:

Keywords:

Science & Technology, Physical Sciences, Physics, Nuclear, Physics, DELAYED DEUTERON EMISSION, MODEL, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, 5106 Nuclear and plasma physics

Abstract:

The rare β-decay channel of He6 into the α+d continuum was investigated at the REX-ISOLDE facility. Bunches of postaccelerated He6 ions were implanted into the optical time projection chamber (OTPC), where the decays with emission of charged particles were recorded. This novel technique allowed us to extend the low-energy end of the spectrum down to 150 keV in α+d center of mass, corresponding to a deuteron energy of 100 keV. The branching ratio for this process amounts to [2.78±0.07(stat)±0.17(sys)]×10−6. The shape of the spectrum is found to be in a good agreement with a three-body model, while the total intensity is about 20% larger than the predicted one.