Dr. Donald V. Reames

Position: Astrophysicist

Office: GSFC , Building 2, Room 29, Mail Code 661

Phone: (301) 286-6454

Fax: (301) 286-1682

E-mail: reames@milkyway.gsfc.nasa.gov

Home page: http://lheawww.gsfc.nasa.gov/~reames



Born and raised in south Florida, Don Reames attended the University of California at Berkeley for both his undergraduate and graduate work. Receiving a Ph.D. in nuclear physics of heavy-ion reactions in 1964, he came to Goddard to work with a group studying element abundances of the heavy ions from solar events and in the galactic cosmic rays, using sounding rockets flown from Ft. Churchill, the Gemini XI spacecraft and high-altitude balloons. Subsequently, he has analyzed data from energetic-particle detectors on the ISEE-3/ICE spacecraft and from similar instruments on IMP-8 and Helios 1 and 2 to study particle acceleration at the Sun and throughout the heliosphere. He has used particle abundances to study wave-particle interactions that produce the 3He-rich, Fe-rich ions from impulsive solar flares, and has studied the element abundances of the solar corona using particles accelerated by shock waves from large coronal mass ejections (CMEs) and in corotating interaction regions of the solar wind. He has done extensive correlations of particle measurements with radio, optical, X-ray and gamma-ray observations in solar flares in an effort to relate the photons to the energetic particles that produce them. CMEs and the particles they accelerate also have significant terrestrial effects.

Don Reames has recently participated in the design, construction and testing of the Energetic Particles, Acceleration, Composition and Transport (EPACT) experiment on the WIND spacecraft launched November 1, 1994. EPACT is 100 times more sensitive than previous instruments and has greatly extended the element and isotope resolution and the energy coverage of particle observations. Don is also a Co-investigator on the IMPACT experiment on the upcoming STEREO mission.

Over the years Don's primary interest has been to understand the physics of particle acceleration in astrophysical plasmas. However, the pursuit of that goal has involved diverse activities from direct participation in work on acceleration or transport theory, to transferring liquid helium in Ft. Churchill, to calibrating detectors in a gold beam at Oak Ridge, to writing and debugging C programs for real-time data acquisition or graphic display.

Selected Recent (1997-2004) Publications:
  • "First Observation of Sulphur in Anomalous Cosmic Rays by the GEOTAIL and WIND Spacecraft" Takashima, T., et al., 1997, ApJ (Letters), 477, L111.
  • "Energy Spectra of Ions Accelerated in Impulsive and Gradual Solar Events," Reames, D.V., Barbier, L.M., von Rosenvinge. T. T., Mason, G. M., Mazur, J. E., and Dwyer, J. R., 1997 ApJ, 483, 515.
  • "Late-Phase Acceleration of Energetic Ions in Corotating Interaction Regions," Reames, D. V., Ng, C. K., Mason, G. M., Dwyer, J. R., Mazur, J. E., and von Rosenvinge, T. T., 1997, Geophys. Res. Letters, 24, 2917.
  • "Spatial and Temporal Invariance in the Spectra of Energetic Particles in Gradual Solar Events," Reames, D. V., Kahler, S. W., and Ng, C. K., 1997, ApJ, (Dec. 10) 414.
  • "Streaming-Limited Intensities of Solar Energetic Particles," Reames, D. V. and Ng, C. K., 1998, ApJ 504, 1002.
  • "Solar Energetic Particles: Sampling Coronal Abundances," Reames, D. V., 1998, Space Science Revs. 85, 327.
  • "Quiet-time Spectra and Abundances of Energetic Particles during the 1996 Solar Minimum," Reames, D. V., 1999, Astrophys. J., 518, 473.
  • "Solar Energetic Particles: Is There Time to Hide?" Reames, D. V., 1999, Radiation Measurements 30/3, 297.
  • "Observations of Systematic Temporal Evolution in Elemental Composition During Gradual Solar Energetic Particle Events," Tylka, A. J., Reames, D. V., and Ng, C. K., 1999, Geophys. Res. Letters, 26, 2141.
  • "Effect of Proton-Amplified Waves on the Evolution of Solar Energetic Particle Composition in Gradual Events," Ng, C. K., Reames, D. V., and Tylka, A. J., 1999, Geophys. Res. Letters, 26, 2145.
  • "Particle Acceleration at the Sun and in the Heliosphere," Reames, D. V., 1999, Space Science Revs. 90, 413. (SSRev.pdf)
  • "Energy-Dependent Ionization States of Shock-Accelerated Particles in the Solar Corona," Reames, D. V., Ng, C. K., and Tylka, A. J., 1999, Geophys. Res. Letters, 26, 3585.
  • "Particle Acceleration at CME-Driven Shock Waves," Reames, D. V., 1999, Highlight Paper in 26th International Cosmic Ray Conf. (Salt Lake City), Eds. B. L. Dingus, D. B. Kieda, and M. H. Salamon, AIP Conf. Series 516, 289.
  • "Initial Time Dependence of Abundances in Solar Particle Events," Reames, D. V., Ng, C. K., and Tylka, A. J., 2000, ApJ (Letters), 531, L83.
  • "What We Don't Understand about Ion Acceleration in Flares," Reames, D. V., 2000, High Energy Solar Physics: Anticipating HESSI, Eds. R. Ramaty and N. Mandzhavidze,ASP Conference Series 206, 102.
  • "The Observational Consequences of Proton-Generated Waves at Shocks," Reames, D. V., 2000, in Acceleration and Transport of Energetic Particles Observed in the Heliosphere, eds. R.A. Mewaldt, J.R. Jokipii, M.A. Lee, E. Moebius, and T.H. Zurbuchen, AIP Conference Proceedings, AIP Conf. Proc. 528, 79.
  • "Abundances of Trans-Iron Elements in Solar Energetic Particle Events, " Reames, D. V., 2000, ApJ (Letters) 540, L111.
  • "Heavy Ion Abundances and Spectra and the Large Gradual Solar Energetic Particle Event of 2000 July 14," Reames, D. V., Ng, C. K. and Tylka, A. J. 2001, ApJ (Letters) 548, L233.
  • "Angular Distributions of Solar Energetic Particles " Reames, D. V., Ng, C. K., and Berdichevsky, D. 2001, Ap. J. 550, 1064.
  • "SEPs: Space Weather Hazard in Interplanetary Space, " Reames, D. V., 2001, in Space Weather eds. P. Song, H. J. Singer, and G. Siscoe, Geophysical Monograph 125 (AGU, Washington, DC) p 101.
  • "Evidence for Remnant Flare Suprathermals in the Source Population of Solar Energetic Particles in the 2000 Bastile Day Event," Tylka, A. J., Cohen, C. M. S., Dietrich, W. F., Maclennan, C. G., McGuire, R. E., Ng, C. K., and Reames, D. V. 2001, ApJ (Letters) 558, L59.
  • "Energetic Particle Composition," Reames, D. V. 2001, in Solar and Galactic Composition, ed. R. F. Wimmer-Schweingruber, AIP Conf. Proc. 598, 153.
  • "Coronal Mass Ejections Associated with Impulsive Solar Energetic Particle Events," Kahler, S. W., Reames, D. V., and Sheeley, N. R., Jr. 2001, ApJ 562, 558.
  • "On the Phase of the 27-Day Modulation of Anomalous and Galactic Cosmic Rays at 1 AU during Solar Minimum," Reames, D. V., and Ng, C. K. 2001, ApJ (Letters) 563, L179.
  • "Magnetic Topology of Impulsive and Gradual Solar Energetic Particle Events," Reames, D. V. 2002, ApJ (Letters) 571, L63.
  • "Interacting Coronal Mass Ejections and Solar Energetic Particles," Gopalswamy, N., Yashiro, S., Michalek, G., Kaiser, M. L., Howard, R. A., Reames, D. V., Leske, R., and von Rosenvinge, T. 2002, ApJ (Letters) 572, L103.
  • "Energetic Particle Abundances as Probes of an Interplanetary Shock Wave, " Reames, D. V., and Tylka, A. J. 2002, ApJ (Letters) 575, L37.
  • "Angular Distributions of Fe/O from Wind: New Insights into SEP Transport, " Reames, D. V., and Ng, C. K. 2002 ApJ (Letters) 577, L59.
  • "Flare- and Shock-Accelerated Energetic Particles in the Solar Events of 2001 April 14 and 15," Tylka, A. J., Boberg, P. R., Cohen, C. M. S., Dietrich, W. F., MacLennan, C. G., Mason, G. M., Ng, C. K., and Reames, D. V. 2002, ApJ (Letters) 581, L119.
  • "Solar Energetic Particle Production by CME-Driven Shocks in Solar Fast-Wind Regions," Kahler, S. W. and Reames, D. V. 2003, ApJ 584, 1063.
  • " Wind Observations of Anomalous Cosmic Rays from Solar Minimum to Maximum, " Reames, D. V. and F. B. McDonald, 2003 Astrophys. J. (Letters) 586, L99
  • "Modeling Shock-Accelerated Solar Energetic Particles Coupled To Interplanetary Alfven Waves," Ng, C. K., Reames, D. V., and Tylka, A. J, 2003, ApJ 591, 461.
  • "Coronal Shocks and Solar Energetic Particles," Cliver, E. W., Kahler, S. W., and Reames, D. V. 2004 ApJ 605, 902.
  • "Solar Energetic Particle Variations" Reames, D. V. 2003, Adv. Space Res. 34 (No. 2) 381.
  • "Heavy-Element Abundances in Solar Energetic Particle Events," Reames, D. V., and Ng, C. K. 2004 ApJ 610, 510.


    • Standard Curriculum vitae and complete reference list

    This file was last modified on Monday, 02-Aug-2004 10:58:46 EDT