Measurement of the Relativistic Doppler Effect Using 8.6-MeV Capture γ Rays

A. Olin, T. K. Alexander, O. Häusser, A. B. McDonald, and G. T. Ewan
Phys. Rev. D 8, 1633 – Published 15 September 1973
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Abstract

The energies of γ rays from the 10.27-MeV (T=1, Γ<1.8 keV)1.63MeV (T=0) transition in Ne20 have been measured in an annular Ge (Li) detector at 0 and 180°. O16(He4, γ) and He4(O16, γ) capture reactions in a differentially pumped gas target were used to produce recoiling Ne20 ions with two different very accurately known velocities. We observe a tranverse Doppler shift of 10.09 ± 0.41 keV for the O16 capture reaction. This allows us to determine relativistic time-dilation effects at velocities of 0.05c to an accuracy of 3.5%. Our results are in very good agreement with the prediction of special relativity.

  • Received 5 March 1973

DOI:https://doi.org/10.1103/PhysRevD.8.1633

©1973 American Physical Society

Authors & Affiliations

A. Olin, T. K. Alexander, O. Häusser, and A. B. McDonald

  • Atomic Energy of Canada Limited, Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada K0J 1J0

G. T. Ewan

  • Queen's University, Kingston, Ontario, Canada

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Vol. 8, Iss. 6 — 15 September 1973

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