Dr. Michael R Collier


Dr. Michael R Collier

  • 301.286.5256 | 301.286.1433
  • Mail Code: 690
  • Greenbelt , MD 20771
  • Employer: NASA
  • Curriculum Vitae

    Positions and Appointments

    June 1998 - Present
    Fields and Particles
    Code 692 - Interplanetary Physics
    As a Civil Service Scientist in the Interplanetary Branch of the Laboratory for Extraterrestrial Physics (LEP) at the NASA Goddard Space Flight Center and as a Heliospheric and Operations Participating Scientist on the IMAGE mission, I analyzed LENA neutral atom data from ionospheric outflow, from the solar wind and magnetosheath, and from the Earth's ring current. I have helped design, develop and test flight instrument prototypes including a neutral atom imager for Jovian applications and a pickup ion instrument for lunar studies.
    In my first few years as a Civil Servant, I examined, using magnetic field data from three spacecraft, Wind, IMP 8, and Geotail, the typical radius of curvature of interplanetary structures. I also combined data from numerous experiments on the Wind spacecraft: MFI, 3DP, SWE, and MASS from inside a magnetic cloud which together showed signatures associated with reconnection. I provided support to the LENA instrument team with duties including design and testing of the start and stop time of flight anode assemblies and other LENA components. In my role as LENA Instrument Scientist, I organized and supported commanding both in-flight and during IMAGE observatory mission simulations. On occasion, I served as acting Branch Head of Code 692.
    September 1996 - June 1998
    Research Associate
    Code 696 - Electrodynamics
    During my tenure as a National Research Council Resident Research Associate at the NASA Goddard Space Flight Center, I investigated correlations between magnetic field observations from multiple spacecraft in the interplanetary medium and studied the magnetotail response to sudden increases in solar wind pressure. This work produced six presentations at professional meetings and two papers. The analysis required programming in FORTRAN and IDL (Interactive Data Language) on UNIX-based SUN systems and included manipulating, processing, plotting, and statistically analyzing data from the WIND, IMP-8, and Geotail spacecraft. Other areas of my work required developing software using the C programming language as well as assisting with and developing web sites using HTML (Hypertext Markup Language). In addition, I contributed to the development and construction of the time-of-flight and heater/conversions surface units for the Low Energy Neutral Atom (LENA) imager launched on the IMAGE spacecraft. This required testing instrument hardware in vacuum chambers with accelerated ion beams and analyzing the acquired test data. I also assisted in the design of a novel type of magnetic spectrometer which uses tomographic principles to determine electron distribution functions.
    July 1996 - September 1996
    Visiting Scientist Program
    Universities Space Research Association
    As a consultant at the NASA Goddard Space Flight Center, I analyzed IMP-8, WIND, and Geotail magnetometer and particle data from the magnetotail lobe and interplanetary medium to determine magnetotail response times, magnetic field profiles, and structure convection times. This analysis was performed using IDL (Interactive Data Language) on a UNIX-based Sun Sparc Station and resulted in a publication and two contributed presentations.
    September 1993 - September 1996
    Research Associate
    University of Maryland
    Department of Physics
    While a research associate at the University of Maryland, College Park, I published five first author papers on heliospheric physics, outer planets magnetospheric physics, and the generation and properties of superthermal particle distributions. In addition, from the launch of the WIND spacecraft in November 1994 through September 1996, I ground commanded the MASS, SWICS, and STICS instrument package. This involved changing instrument modes, raising instrument high voltages, and checking the status of the sensors. I have also analyzed data from the three sensors, particularly the MASS instrument, to determine abundance ratios, temperatures, and detailed distribution functions of minor ion species in the solar wind. This work has led to numerous scientific publications and contributed talks. I have analyzed energetic particle data from the LECP (Low Energy Charged Particle) experiment on the Voyager 1 and 2 spacecraft in the Jovian and Saturnian magnetospheres, upstream of the Jovian bowshock, and in the interplanetary medium. This work also led to many publications and contributed talks. In addition, I analyzed Voyager 1 magnetometer data. In conjunction with this work, I programmed extensively in FORTRAN. I have delivered undergraduate physics lectures and answered student questions during the occasional absence of the regular professor.
    September 1988 - August 1993
    Research Assistant
    University of Maryland
    Department of Physics
    While a research assistant at the University of Maryland, I developed numerical simulation software to help in the design and development of the MASS instrument on the WIND spacecraft. In addition, I tested prototypes of the MASS instrument using Van de Graaff and other electrostatic particle accelerators at the NASA Goddard Space Flight Center. On this project, high vacuum systems were employed. In addition, I have analyzed energetic particle data from the LECP instrument on the Voyager 1 and 2 spacecraft as well as magnetometer data from the Voyager 1 spacecraft. The data analysis required use of both IBM and VAX/VMS data types and conversions between them. I also delivered undergraduate physics lectures and supervised undergraduate laboratory classes in the absence of the regular professor.
    June 1986 - August 1988
    Engineering Physicist Assistant
    University of Maryland
    Department of Physics
    While an engineering physicist assistant at the University of Maryland, College Park, I performed numerical simulations to determine the design characteristics and dimensions of MASS instrument prototypes. In addition, I tested MASS instrument prototypes in the laboratory environment. This work involved the use of high vacuum systems. I also examined the feasibility of other energy-independent, time of flight mass spectrometers analytically and using computer models. I performed experiments characterizing channeling in ion implanted silicon solid state detectors using particle accelerators at Goddard Space Flight Center. I also did engineering studies characterizing the noise and dead layer properties of silicon solid state detectors.


    September 1984 - May 1988
    B.S. Physics, summa cum laude
    University of Maryland, College Park
    September 1988 - May 1990
    M.S. Physics
    University of Maryland, College Park
    May 1990 - August 1993
    Ph.D. Physics
    University of Maryland, College Park
    Thesis: Energetic Particle Acceleration in the Jovian Magnetosphere

    Professional Services

    * Authored or Co-authored 81 Papers Presented at Professional Meetings; Delivered 14 Contributed and Invited Talks, 1990-Present; Delivered 6 Invited Presentations, 1998-Present
    * Peer Reviews of Journal Articles 1995-Present:
    o Advances in Space Research - 4 manuscripts (30 Sep 96, 12 Sep 98, 29 Sep 98, 5 Jan 03)
    o Astronomy and Astrophysics - 2 manuscript (29 Mar 02, 24 Apr 03)
    o Astroparticle Physics - 1 manuscript (18 Jun 01)
    o Astrophysics and Space Science - 1 manuscript (15 Aug 01)
    o Geophysical Research Letters - 10 manuscripts (27 Jun 95, 19 Jan 96, 19 Nov 96, 26 Feb 98, 25 Oct 99, 1 Mar 00, 4 Jan 01, 21 Mar 01, 26 Dec 01, 24 Aug 04)
    o International Journal of Geomagnetism and Aeronomy - 1 manuscript (18 Jan 00)
    o Journal of Atmospheric and Solar-Terrestrial Physics - 1 manuscript (28 Feb 01)
    o Journal of Geophysical Research - 5 manuscripts (7 Sep 99, 12 Jun 00, 22 Nov 00, 3 Apr 02, 27 Dec 02)
    * Reviewed for GSFC 1998-Present:
    o Graduate Student Researchers Program (GSRP) - 6 proposals (6 on 1 Mar 01)
    o Small Business Innovation Research (SBIR) program - 5 proposals (28 Aug 98, 2 Sep 99, 11 Sep 00, 3 Aug 01, 4 Oct 02)
    o Small Business Technology Transfer (STTR) program - 1 proposal (30 Jun 98)
    * Reviewed for NASA 1993-Present:
    o Participated in the NASA Research Announcement (NRA) Research Opportunities in Space Science and the Sun-Earth Connection's Supporting Research and Technology (SR&T) and Low Cost Access to Space Program in Solar and Heliospheric Physics Panel Review on 6-8 May 2003 in Washington, D.C.
    o Participated in the Sun-Earth Connection Living with a Star (LWS) Targeted Research and Technology (TR&T) Program - Geospace Panel Review on 14-16 January 2003 in Washington, D.C.
    o Participated in the 2002 NASA Office of Space Science (OSS) Education Product Review on 6 June 2002 and 22 August 2002.
    o Participated in the Sun-Earth Connection Guest Investigator Program (SECGIP) 2002 Panel Review on 23-25 July 2002 in Crystal City, VA.
    o Participated in the Geosciences SSM Panel Review on 10-12 October 2000 in Crystal City, VA.
    o A Neptune Data Analysis Proposal, 1993.
    * Reviewed for NSF 2002-Present:
    o A Division of Atmospheric Sciences Solar Heliospheric and INterplanetary Environment (SHINE) Proposal, 30 April 2003.
    o A Division of Atmospheric Sciences Proposal, January 2002.
    * Approved by GSFC Radiation Safety Committee to handle and control ionizing radiation sources, 28 October 2003-27 October 2005
    * Member of the LEP Education Committee, 1998-Present
    * Served as Code 692 Keyworker for the LEP Combined Federal Campaign (CFC), 1998-Present
    * American Geophysical Union, 1990-Present
    * Organized as Primary Convener a special session at the AGU Spring Meeting in Washington DC entitled SH06: The Heliosphere and its Surrounding Interstellar Medium,, 28-31 May 2002
    * Served as IMAGE Deputy Project Scientist (T.E. Moore, Project Scientist), September 2003-Present
    * Served as TWINS Project Scientist, October 2004-Present
    * Served as IMEX Project Scientist, 1998-2001
    * Organized LEP Seminar Series, 1998-1999


    * Education/Public Outreach Awards
    o Certificate of Appreciation from Bowie State University for the significant contribution made to the 2003 Summer Institute in Engineering and Computer Applications (SIECA) Program at Goddard Space Flight Center (July 2003)
    o Certificate of Appreciation in grateful recognition of service and support of the National Space Scholars Program as a mentor (August 2001)
    o Award Certificate in recognition of outstanding service to Eleanor Roosevelt High School (April 2001)
    o Certificate of Appreciation from Bowie State University for the significant contribution made to the 2000 Summer Institute in Engineering and Computer Applications (SIECA) Program at Goddard Space Flight Center (August 2000)
    * Performance/Support/Special Act and Achievement Awards
    o GSFC Performance Awards in recognition and appreciation of exceptional service in performance of official duties (May 2004, April 2003, April 2002, July 2000, August 1999)
    o GSFC Special Act Awards in recognition and appreciation of superior performance of a special act, service or achievement (September 2001, August 2000)
    o Combined Federal Campaign of the National Capital Area Certificates of Appreciation in recognition of outstanding support as a Keyworker for the Combined Federal Campaign (2001, 1999)
    o NASA Group Achievement Award for the Low Energy Neutral Atom (LENA) Imager Development Team in recognition of creativity and dedication to the successful development of the IMAGE Low Energy Neutral Atom Imager (August 2001)
    o NASA Group Achievement Award for participation on the Global Geospace Science - Wind SMS (SWICS/MASS/STICS) team (1998)
    * Research Awards
    o High Capability Instruments for Planetary Exploration (HCIPE) Program award to study as PI "In-Situ and Remote Sensing of the Jovian Environment Using Low Energy (1 eV-4 keV) Plasma and Neutral Atom Imaging" (2005-2007)
    o NASA Stage 2 Proposal for XMM-Newton (AO3) as Co-I for "Observing Heliospheric Solar Wind Charge Exchange Emission from the ISM Focusing Cone" (Steve Snowden, PI; 2004)
    o Polish Academy of Sciences award to study as Co-I "Remote Sensing of Heliosphere by Neutral Atoms and Derivative Populations" (Maciej Bzowski, PI; 2004-2006)
    o Sun-Earth Connection Division-Instrument Development award to study as Co-I "Fast 3D Ion Composition Plasma Spectrometer" (2002-2004)
    o ISTP Extended Science Task award to study as Co-I "Origin of Shocks Internal to Magnetic Clouds" (2000)
    o ISTP Extended Science Task award to study as Co-I "Ionospheric Plasma Source in CME-driven Storms" (2000)
    o GSFC Director's Discretionary Fund (DDF) award to develop as Co-I an "Instrument for Line-Integral Measurements of Electron Velocity Distributions" (1998 - became PI 4/99)
    o National Research Council Research Associateship award at the NASA/Goddard Space Flight Center (1996-1998)
    o NASA Graduate Student Researchers Program (GSRP) grant to study energetic particle acceleration and transport in the Jovian magnetosphere (1990-1993)
    o Co-authored paper voted one of the most memorable papers of 1989 by the readers of the American Journal of Physics [59, 201-207, 1991]
    * Academic Honors
    o Graduate School Fellowship, University of Maryland, College Park (1988-1990)
    o Ralph D. Myer award for academic achievement in the Department of Physics at the University of Maryland, College Park (1989)
    o Summa cum laude with high honors in physics, University of Maryland, College Park (1988)
    o General Honors Program Scholarship, University of Maryland, College Park (1984-1988)
    o Distinguished Scholar Scholarship, State of Maryland (1984-1988)
    o National Merit Scholar (1983)


    1. 050FC019 - Michael R. Collier, Thomas E. Moore, David Simpson, Aaron Roberts, Adam Szabo, Stephen Fuselier, Peter Wurz, Martin A. Lee, and Bruce T. Tsurutani, An unexplained 10-40° shift in the location of some diverse neutral atom data at 1 AU, Adv. Space Res., 34, 166-171, 2004.
    2. 049FC018 - Michael R. Collier, Are magnetospheric suprathermal particle distributions (kappa functions) inconsistent with maximum entropy considerations?, Adv. Space Res., 33, 2108-2112, 2004.
    3. 048SJ017 - Snowden, S.L., M.R. Collier, and K.D. Kuntz, XMM-Newton observation of solar wind charge exchange emission, Astrophys. J., 610, 1182-1190, August 1, 2004.
    4. 047SJ017 - Taguchi, S., M.R. Collier, T.E. Moore, M.-C. Fok, and H.J. Singer, Response of neutral atom emissions in the low-latitude and high-latitude magnetosheath direction to the magnetopause motion under extreme solar wind conditions, J. Geophys. Res., 109, A04208, doi:10.1029/2003JA010147, 2004.
    5. 046PJ017 - Fok, M.-C., T.E. Moore, M.R. Collier, and T. Tanaka, Neutral atom imaging of solar wind interaction with the Earth and Venus, J. Geophys. Res., 109(A1), A01206, doi:10.1029/2003JA010094, 2004.
    6. 045FC017 - Michael R. Collier, Thomas E. Moore, K. Ogilvie, D.J. Chornay, J. Keller, S. Fuselier, J. Quinn, P. Wurz, M. Wuest, and K.C. Hsieh, Dust in the wind: The dust geometric cross section at 1 AU based on neutral solar wind observations, in Solar Wind Ten, Proceedings of the Tenth International Solar Wind Conference, M. Velli, R. Bruno and F. Malara (eds.), AIP Conf. Proceedings, Vol. 679, American Institute of Physics, Melville, New York, 790-793, 2003.
    7. 044SC016 - Moore, T.E., M.R. Collier, M.-C. Fok, S.A. Fuselier, H. Khan, W. Lennartsson, D.G. Simpson, G.R. Wilson, and M.O. Chandler, Heliosphere-geosphere interactions using low energy neutral atom imaging, Space Sci. Rev., 109, 351-371, 2003.
    8. 043PC016 - Fuselier, S.A., S.B. Mende, T.E. Moore, H.U. Frey, S.M. Petrinec, E.S. Claflin, and M.R. Collier, Cusp dynamics and ionospheric outflow, Space Sci. Rev., 109, 285-312, 2003.
    9. 042SJ016 - Khan, H., M.R. Collier, and T.E. Moore, Case study of solar wind pressure variations and neutral atom emissions observed by IMAGE/LENA, J. Geophys. Res., 108(A12), 1422, SIA 2-1-2-15, doi:10.1029/2003JA009977, 2003.
    10. 041PJ016 - Wilson, G.R., T.E. Moore, M. Collier, Low-energy neutral atoms observed near the Earth, J. Geophys. Res., 108(A4), 10.1029/2002JA009643, 2003.
    11. 040FJ016 - Collier, Michael R., Dennis J. Chornay, John W. Keller, Michael Coplan, Norman J. Dionne, Brahim El Marji, Federico Herrero, Joe Hirman, Jeffrey Houser, John Moore, and James A. Slavin, Tomographic imaging of electron distributions: Leveraging computing power advances to produce inexpensive, low-power, lightweight, and robust instrumentation, Rev. Sci. Inst., 74(2), 1002-1007, 2003.
    12. 039PJ015 - Weimer, D.R., D.M. Ober, N.C. Maynard, M.R. Collier, D.J. McComas, N.F. Ness, C.W. Smith, and J. Watermann, Predicting interplanetary magnetic field (IMF) propagation delay times using minimum variance techniques, J. Geophys. Res., 108(A1), 10.1029/2002JA009405, 2003.
    13. 038PJ015 - Fuselier, S.A., H.L. Collin, A.G. Ghielmetti, E.S. Claflin, T.E. Moore, M.R. Collier, H. Frey, and S.B. Mende, Localized ion outflow in response to a solar wind pressure pulse, J. Geophys. Res., 107(A8), SMP 26-1-26-9, 2001JA000297, 2002.
    14. 037PJ015 - Weimer, D.R., D.M. Ober, N.C. Maynard, W.J. Burke, M.R. Collier, D.J. McComas, N.F. Ness, and C.W. Smith, Variable time delays in the propagation of the interplanetary magnetic field, J. Geophys. Res., 107(A8), 10.1029/2001JA009102, 2002.
    15. 036FJ015 - Collier, Michael R., Thomas E. Moore, Keith W. Ogilvie, Dennis Chornay, J.W. Keller, S. Boardsen, James Burch, B. El Marji, M.-C. Fok, S.A. Fuselier, A.G. Ghielmetti, B.L. Giles, D.C. Hamilton, B.L. Peko, J.M. Quinn, E.C. Roelof, T.M. Stephen, G.R. Wilson, and P. Wurz, Observations of neutral atoms from the solar wind, J. Geophys. Res., 106, 24,893-24,906, 2001.
    16. 035PJ014 - Moldwin, Mark B., S. Mayerberger, H.K. Rassoul, M.R. Collier, R.P. Lepping, J.A. Slavin, and Adam Szabo, Evidence of different magnetotail reponses to small solar wind pressure pulses depending on IMF Bz polarity, Geophys. Res. Lett., 28, 4163-4166, 2001.
    17. 034SJ014 - Moldwin, Mark B., M.R. Collier, J.A. Slavin, and A. Szabo, On the origin of reverse polarity TCRs, Geophys. Res. Lett., 28, 1925-1928, 2001.
    18. 033PJ014 - Fuselier, S.A., A.G. Ghielmetti, Moore, T.E., M.R. Collier, J.M. Quinn, G.R. Wilson, P. Wurz, S.B. Mende, H.U. Frey, C. Jamar, J.-C. Gerard, and J.L. Burch, Ion outflow observed by IMAGE: Implications for source regions and heating mechanisms, Geophys. Res. Lett., 28, 1163-1166, 2001.
    19. 032SJ014 - Moore, T.E., M.R. Collier, J.L. Burch, D.J. Chornay, S.A. Fuselier, A.G. Ghielmetti, B.L. Giles, D.C. Hamilton, F.A. Herrero, J.W. Keller, K.W. Ogilvie, B.L. Peko, J.M. Quinn, T.M. Stephen, G.R. Wilson, and P. Wurz, Low Energy Neutral Atoms in the Magnetosphere, Geophys. Res. Lett., 28, 1143-1146, 2001.
    20. 031FJ014 - Collier, Michael R., Adam Szabo, W. Farrell, James A. Slavin, R.P. Lepping, R. Fitzenreiter, B. Thompson, D.C. Hamilton, G. Gloeckler, G.C. Ho, P. Bochsler, D. Larson and L. Ofman, Reconnection remnants in the magnetic cloud of October 18-19, 1995: A shock, monochromatic wave, heat flux dropout and energetic ion beam, J. Geophys. Res., 106, 15,985-16,000, 2001.
    21. 030FJ013 - Collier, Michael R., Adam Szabo, James A. Slavin, R.P. Lepping, and S. Kokubun, IMF length scales and predictability: The two length scale medium, Int. J. Geomag. and Aeron., 2, 3-16, 2000.
    22. 029PJ012 - Chotoo, K., N.A. Schwadron, G.M. Mason, T.H. Zurbuchen, G. Gloeckler, A. Posner, L.A. Fisk, A.B. Galvin, D.C. Hamilton and M.R. Collier, The suprathermal seed population for CIR ions at 1 AU deduced from composition and spectra of H+, He++, and He+ observed on WIND, J. Geophys. Res., 105, 23,107-23,122, 2000.
    23. 028PJ012 - Moore, T.E., D. Chornay, M.R. Collier, F.A. Herrero, J. Johnson, M.A. Johnson, J.W. Keller, J.F. Laudadio, J.F. Lobell, K.W. Ogilvie, P. Rozmarynowski, S.A. Fuselier, A.G. Ghielmetti, E. Hertzberg, D.C. Hamilton, R. Lundgren, P. Wilson, P. Walpole, T. Stephen, B. Van Zyl, P. Wurz, and J.M. Quinn, The Low Energy Neutral Atom imager for the IMAGE mission, Space Sci. Rev., 91, 155-195, 2000.
    24. 027FJ012 - Collier, Michael R., Evolution of kappa distributions under velocity space diffusion: A model for the observed relationship between their spectral parameters, J. Geophys. Res., 104, 28,559-28,564, 1999.
    25. 026PJ011 - Moore, T.E., W.K. Peterson, C.T. Russell, M.O. Chandler, M.R. Collier, H.L. Collin, P.D. Craven, R. Fitzenreiter, B.L. Giles, and C.J. Pollock, Ionospheric mass ejection in response to a CME, Geophys. Res. Lett., 26(15), 2339-2342, 1999.
    26. 025PJ011 - Smith, J.P., M.F. Thomsen, J.E. Borovsky, and M. Collier, Solar wind density as a driver for the ring current in mild storms, Geophys. Res. Lett., 26, 1797-1800, 1999.
    27. 024FJ011 - Collier, M.R., J.A. Slavin, R.P. Lepping, K. Ogilvie, A. Szabo, H. Laakso, and S. Taguchi, Multispacecraft observations of sudden impulses in the magnetotail caused by solar wind pressure discontinuities: WIND and IMP 8, J. Geophys. Res., 103, 17,293-17,305, 1998.
    28. 023FJ010 - Collier, Michael R., J.A. Slavin, R.P. Lepping, A. Szabo, and K. Ogilvie, Timing accuracy for the simple planar propagation of magnetic field structures in the solar wind, Geophys. Res. Lett., 25, 2509-2512, 1998.
    29. 022FJ009 - Collier, Michael R., D.C. Hamilton, G. Gloeckler, G. Ho, P. Bochsler, R. Bodmer, and R. Sheldon, The oxygen-16 to oxygen-18 abundance ratio in the solar wind observed by WIND/MASS, J. Geophys. Res., 103, 7-13, 1998.
    30. 021PJ008 - Thomsen, M.F., J.E. Borovsky, D.J. McComas, and M.R. Collier, Variability of the ring current source population, Geophys. Res. Lett., 25, 3481-3484, 1998.
    31. 020SJ008 - Chotoo, K., M.R. Collier, A.B. Galvin, D.C. Hamilton, and G. Gloeckler, Extended solar wind helium distribution functions in high-speed streams, J. Geophys. Res., 103, 17.441-17,445, 1998.
    32. 019PJ008 - Laakso, H., D.H. Fairfield, M.R. Collier, H. Opgenoorth, T.-D. Phan, D.G. Sibeck, B.L. Giles, H.J. Singer, R.P. Lepping, R.P. Lin, F.S. Mozer, R.F. Pfaff, K. Tsuruda, and J.R. Wygant, Oscillations of magnetospheric boundaries driven by IMF rotations, Geophys. Res. Lett., 25, 3007-3010, 1998.
    33. 018PJ008 - Bochsler, P., H. Balsiger, R. Bodmer, O. Kern, Th. Zurbuchen, G. Gloeckler, D.C. Hamilton, M.R. Collier, and D. Hovestadt, Limits of the efficiency of isotope fractionation processes in the solar wind derived from the magnesium isotopic composition as observed with the WIND/MASS experiment, Phys. Chem. Earth, 22, 401-404, 1997.
    34. 017PJ008 - Oetliker, M., D. Hovestadt, B. Klecker, M.R. Collier, G. Gloeckler, D.C. Hamilton, F.M. Ipavich, P. Bochsler, and G.G. Managadze, The isotopic composition of iron in the solar wind: First measurements with the MASS sensor on the WIND spacecraft, Ap. J. Letters, 474, L69-L72, 1997.
    35. 016FJ008 - Collier, M.R., D.C. Hamilton, G. Gloeckler, P. Bochsler, and R.B. Sheldon, Neon-20, Oxygen-16, and Helium-4 densities, temperatures, and suprathermal tails in the solar wind determined with WIND/MASS, Geophys. Res. Lett., 23, 1191-1194, 1996.
    36. 015FJ007 - Collier, M.R. and R.P. Lepping, Jovian magnetopause breathing, Planetary and Space Science, 44, 187-197, 1996.
    37. 014SJ006 - Cohen, C.M.S., M.R. Collier, D.C. Hamilton, G. Gloeckler, R.B. Sheldon, R von Steiger, and B. Wilken, Kinetic temperature ratios of O6+ and He2+: Observations from Wind/MASS and Ulysses/SWICS, Geophys. Res. Lett., 23, 1187-1190, 1996.
    38. 013PJ006 - Maclennan, C.G., L.J. Lanzerotti, R.B. Decker, S.M. Krimigis, M.R. Collier, and D.C. Hamilton, Helioradius dependence of interplanetary carbon and oxygen abundances during 1991 solar activity, Ap. J. Letters, 468, L123-L126, 1996.
    39. 012PC006 - Bochsler, P., M. Gonin, R.B. Sheldon, Th. Zurbuchen, G. Gloeckler, D.C. Hamilton, M.R. Collier, and D. Hovestadt, Abundance of solar wind magnesium isotopes determined with WIND/MASS, Solar Wind 8, American Institute of Physics, 199-202, 1996.
    40. 011FJ006 - Collier, Michael R., The adiabatic transport of superthermal distributions modelled by kappa functions, Geophys. Res. Lett., 22, 2673-2676, 1995.
    41. 010FJ005 - Collier, Michael R. and D.C. Hamilton, The relationship between kappa and temperature in energetic ion spectra at Jupiter, Geophys. Res. Lett., 22, 303-306, 1995.
    42. 009PC004 - Krimigis, S.M., R. Decker, R. McNutt, D. Venkatesan, D. Hamilton, and M. Collier, Energetic particle activity in the heliosphere, 1991-1995, Proceedings of the 24th International Cosmic Ray Conference, 4, 401, 1995.
    43. 008PC004 - Decker, R.B., S.M. Krimigis, R.L. McNutt, D.C. Hamilton, and M.R. Collier, Latitude-associated differences in the low energy charged particle activity at Voyagers 1 and 2 during 1991 to early 1994, Proceedings of the 28th ESLAB Symposium on the High Latitude Heliosphere, Space Sci. Rev., 72, 347, 1995.
    44. 007FJ004 - Collier, Michael R., On generating kappa-like distribution functions using velocity space Levy flights, Geophys. Res. Lett., 20, 1531-1534, 1993.
    45. 006FJ003 - Collier, Michael R., A mathematical model of habituation and addiction, Int. J. Addict., 28, 175-185, 1993.
    46. 005FJ002 - Collier, Michael R., Richard E. Berg, and Richard A. Ferrell, The Feynman inverse sprinkler problem: A detailed kinematic study, Am. J. Phys., 59, 349-355, 1991.
    47. 004SL001 - Berg, Richard E. and Michael R. Collier, Letter to the editor, Phys. Today, 43, 13, July 1990.
    48. 003SJ001 - Berg, Richard E. and Michael R. Collier, The Feynman inverse sprinkler problem: A demonstration and quantitative analysis, Am. J. Phys., 57, 654-657, 1989.
    49. 002FT001 - Collier, Michael R., R.A. Lundgren, and D.C. Hamilton, Channeling in ion implanted silicon solid-state detectors, University of Maryland Technical Report, PP 89-001, July 1988.
    50. 001FC001 - Collier, Michael R., Channeling in ion implanted silicon solid-state detectors, Proceedings of the Second National Conference on Undergraduate Research, April 1988.

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