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The mean life of the 1.04 MeV 0+, T = 1 state in 18F has been measured as 2.2±0.6 fs using a refinement of the Doppler-shift attenuation method. The reaction 3He(16O, p)18F at a mean beam energy of 26.6 MeV was used to populate the 1.04 MeV level with a recoil velocity v c = 4.4 %. The targets were 3He implanted in foils of magnesium, aluminium, tantalum and gold. The result is compared with shell-model calculations and its relevance to the search for parity non-conservation in the system comprising the 1.04 MeV level and the 1.08 MeV 0-, T = 0 level in 18F is discussed. © 1983.

Original publication




Journal article


Nuclear Physics, Section A

Publication Date





255 - 268