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Radioactive Clocks and Cosmic-ray Transport in the Galaxy

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Abstract

There are a number of radioactive ‘clocks’ in the cosmic radiation that can be used to measure the time scales for cosmic ray processes in the Galaxy. With high-resolution isotope measurements available from ACE it is now possible to read these clocks with greatly improved accuracy and address key questions about the origin and lifetime of cosmic rays. This paper discusses the status of three such investigations.

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Authors and Affiliations

  1. California Institute of Technology, Pasadena, CA, 91125, U.S.A

    R.A. Mewaldt, A.J. Davis, A.C. Cummings, R.A. Leske & E.C. Stone

  2. Jet Propulsion Laboratory, Pasadena, CA , 91009, U.S.A

    N.E. Yanasak & M.E. Wiedenbeck

  3. Washington University, St. Louis, MO , 68105, U.S.A

    W.R. Binns, P.L. Hink & S.M. Niebur

  4. Goddard Space Flight Center, Greenbelt, MD , 20771, U.S.A

    E.R. Christian & T.T. Von Rosenvinge

Authors
  1. R.A. Mewaldt
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  2. N.E. Yanasak
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  3. M.E. Wiedenbeck
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  4. A.J. Davis
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  5. W.R. Binns
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  6. E.R. Christian
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  7. A.C. Cummings
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  8. P.L. Hink
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  9. R.A. Leske
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  10. S.M. Niebur
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  11. E.C. Stone
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  12. T.T. Von Rosenvinge
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Mewaldt, R., Yanasak, N., Wiedenbeck, M. et al. Radioactive Clocks and Cosmic-ray Transport in the Galaxy. Space Science Reviews 99, 27–39 (2001). https://doi.org/10.1023/A:1013868225842

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