Fine structure in the beta-delayed proton decay of Ar-33

• Low-energy beta-delayed protons from Ar-33 have been measured for the first time, The data reveal states, which, despite unfavourable barrier penetrability values, strongly decay to the first excited 2(+) state in S-32. The observation is discussed in terms of the standard shell model, A natural explanation is provided by the large spectroscopic amplitudes, involving s(1/2) and d(3/2) orbitals, as well as the l = 0 barrier penetrability, favouring the decay to the 2(+) state.

Ämnesord

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

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

Nyckelord

deduced relative spectroscopic amplitudes

Ar-33 (from 1 GeV p on Nb-foil

Ip

measured beta-delayed protons

Gas-Si telescope spectrometer

EMISSION

selective mass separation)

target

beta-delayed proton decay

SHELL NUCLEI

shell-model calculation

Ep

shell model

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art (ämneskategori)

ref (ämneskategori)