Lifetime of 19Ne*(4.03 MeV)

R. Kanungo , T.K. Alexander , A.N. Andreyev , G.C. Ball , R.S. Chakrawarthy , M. Chicoine , R. Churchman , B. Davids

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J.S. Forster S. Gujrathi G. Hackman D. Howell J.R. Leslie A.C. Morton S. Mythili C.J. Pearson J.J. Ressler C. Ruiz H. Savajols M.A. Schumaker I. Tanihata P. Walden S. Yen

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classification ⚛️ nucl-ex

keywords lifetimealphalevelstateappliedattenuationbeamcoincidence

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The Doppler-shift attenuation method was applied to measure the lifetime of the 4.03 MeV state in 19Ne. Utilizing a 3He-implanted Au foil as a target, the state was populated using the 20Ne(3He,alpha)19Ne reaction in inverse kinematics at a 20Ne beam energy of 34 MeV. De-excitation gamma rays were detected in coincidence with alpha particles. At the 1 sigma level, the lifetime was determined to be 11 +4, -3 fs and at the 95.45% confidence level the lifetime is 11 +8, -7 fs.

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Lifetime of 19Ne*(4.03 MeV)

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