Quenched E1 transition rates in Th-231

• The fast timing beta gamma gamma(t) method has been used to measure lifetimes of the low-lying levels in Th-231 populated in the beta(-) decay of Ac-231. The half-life of the K-pi = 5/2(-) band-head at 185.7-keV was measured as T-1/2 = 1073(79) ps, yieldi

Ämnesord

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

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

Nyckelord

ultra fast timing, ISOLDE/OSIRIS separators, exotic nuclei, radioactivity; Ac-231; beta-; Measured E gamma; I gamma; gamma-gamma coincidences; T-1/2; deduced Th-231 levels; B(XL); fast-timing beta gamma gamma(t) method; rotational bands; quasiparticle-plu

Nuclear physics

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