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Journal Article

Measurement of the Decay Rate of the Negative Ion of Positronium (Ps-)

MPS-Authors
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Fleischer,  F.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Degreif,  K.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Gwinner,  G.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Lestinsky,  M.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Plenge,  Florian
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Schwalm,  D.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Citation

Fleischer, F., Degreif, K., Gwinner, G., Lestinsky, M., Liechtenstein, V., Plenge, F., et al. (2006). Measurement of the Decay Rate of the Negative Ion of Positronium (Ps-). Physical Review Letters, 96(6): 063401, pp. 1-4.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-86EF-9
Abstract
A new determination of the decay rate of the negative ion of positronium (Ps-), using a beam-foil method and a stripping-based detection technique, is reported. The measured result of Γ=2.089(15) ns-1 is a factor of 6 more precise than the previous experimental value of Γ=2.09(9) ns-1, and is in excellent agreement with the theoretical value of Γ=2.086(6) ns-1.