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 Planetary Ices: People
Paul Johnson's Picture
Address:
Jet Propulsion Laboratory
M/S 183-601
4800 Oak Grove Drive
Pasadena, CA 91109
Phone:
818.393.4749
Fax:
818.354.5148
Email:

Paul Johnson
Group Supervisor

Education
  • B.Sc.(honors), Physics, University of Manitoba, Winnipeg MB, Canada (1994)
  • Ph. D., Physics, University of Manitoba, Winnipeg MB, Canada (1999)
Research Interests
  • Physics and chemistry of planetary ices
  • Electron energy loss spectroscopy and electron impact induced emission spectroscopy involving atomic and molecular species relevant to planetary atmospheres and astrophysical environments.
  • Development of instrumentation for in situ detection and analysis of inorganic and organic compounds on planetary bodies
Professional Experience
  • Jet Propulsion Laboratory, California Institute of Technology, Science Division (2000-Present)
    • Supervisor, Planetary Ices Group (2008-present)
    • Research Scientist: Advanced Instrumentation and Spectroscopy Group (2005-present)
    • Scientist: Advanced Instrumentation and Spectroscopy Group (2003-2005)
    • National Research Council Postdoctoral Research Associate at JPL (2000-2003)
    • Caltech Postdoctoral Scholar at JPL (2000)
  • University of Manitoba, Postdoctoral Scholar (1999-2000)
Selected Awards
  • JPL Lew Allen Award for Excellence "in scientific research of atomic and molecular physics, the physics and chemistry of planetary ices, and in situ instrument development" (2007)
  • National Research Council, Resident Research Fellowship (January 2001-April 2003)
  • University of Manitoba Students Union (UMSU) Scholarship (1997)
  • University of Manitoba Graduate Fellowship, Ph.D. (1995-1999)
  • University of Manitoba Graduate Fellowship, M.Sc. (1994-1995)
  • Natural Sciences and Engineering Research Council (NSERC) Summer Research Award (1992, 1993, 1994)
  • Harold R. Coish Memorial Scholarship (1991)
  • Canada Scholarship (1990-1994)
Selected Publications
  1. R. Hodyss, C. D. Parkinson, P. V. Johnson, J. V. Stern, J. D. Goguen, Y. L. Yung, and I. Kanik, Methanol on Enceladus, Geophysical Research Letters, 36, L17103 (3pp) (2009).
  2. A. S. Weber, R. Hodyss, P. V. Johnson, K. Willacy, and I. Kanik, Hydrogen-deuterium exchange in photolyzed methane-water ices, The Astrophysical Journal, 703 1030-1033 (2009).
  3. X. Liu, P. V. Johnson, C. P. Malone, J. A. Young, D. E. Shemansky and I. Kanik, Electron impact excitation and emission cross section of the H2 B' 1Σ+u, and D 1Πu states and rotational dependence of photodissociation cross sections of the B' 1Σ+uand D 1Πu continua, Journal of Physics B: Atomic, Molecular and Optical Physics, 42, 185203 (13pp) (2009).
  4. J. A. Young, C. P. Malone, P. V. Johnson, X. Liu and I. Kanik, Dissociative Excitation of NO2 by Electron Impact, Journal of Physics B: Atomic, Molecular and Optical Physics, 42, 185201 (10pp) (2009).
  5. C. P. Malone, P. V. Johnson, I. Kanik, B. Ajdari, S. S. Rahman, S. S. Bata, A. Emigh, and M. A. Khakoo, Electron Impact Excitation of Molecular Nitrogen. II. Vibrationally-Resolved Excitation of the C3Πu (v’) State, Physical Review A: Atomic, Molecular, and Optical Physics, 79, 032705, 1-9 (2009).
  6. C. P. Malone, P. V. Johnson, I. Kanik, B. Ajdari, and M. A. Khakoo, Electron-Impact Excitation of Molecular Nitrogen. I. Excitation of the C 3Πu, E' 3Σ+g, and a” 1Σ+g States, Physical Review A: Atomic, Molecular, and Optical Physics, 79, 032704, 1-16 (2009).
  7. R. Hodyss, P. V. Johnson, J. V. Stern, J. D. Goguen, and I. Kanik, Photochemistry of Methane-Water Ices, Icarus, 200, 338-342 (2009).
  8. *J. W. McConkey, C. P. Malone, P. V. Johnson, C. Winstead, V. McKoy, and I. Kanik, Electron Impact Dissociation of Oxygen-Containing Molecules – A Critical Review, Physics Reports, 466, 1-103 (2008).
  9. R. P. Hodyss, J. D. Goguen, P. V. Johnson, C. Campbell, and I. Kanik, Release of N2, CH4, CO2, and H2O from surface ices on Enceladus, Icarus, 197, 152-156 (2008).
  10. C. P. Malone, P. V. Johnson, J. W. McConkey and I. Kanik Cross sections for the O II (83.4 nm) emission from electron impact on O2, Journal of Geophysical Research: Space Physics. 113, A06309, doi:10.1029/2008JA013160 (2008).
  11. C. P. Malone, P. V. Johnson, J. W. McConkey, J. M. Ajello, and I. Kanik, Dissocitative Excitation of N2O by Electron-Impact, Journal of Physics B: Atomic, Molecular, and Optical Physics, 41 095201 (9pp) (2008) .
  12. H. Kim, H. I. Kim, P. V. Johnson, L. W. Beegle, J. L. Beauchamp ,W. A. Goddard, and I. Kanik, Ion Mobility Study of Choline and Other Ammonium Cations in N2: Experimental and Theoretical Investigations of Mass-Mobility Correlation, Analytical Chemistry, 80, 1928-1936 (2008).
  13. R. Hodyss, P. V. Johnson, G. E. Orzechowska, and I. Kanik, Carbon dioxide segregation in mixed CO2:H2O ices, Icarus, 194, 836-842 (2008).
  14. X. Liu, D. E. Shemansky, C. P. Malone, P. V. Johnson, J. M. Ajello, I. Kanik, A. N. Heays, B. R. Lewis, S. T. Gibson, and G. Stark, Experimental and Coupled-Channels Investigation of the Radiative Properties of the N2c'4 1Σ+u-X1Σ+g Band System, Journal of Geophysical Research-Space Physics 113, A02304 (2008).
  15. M. A. Khakoo, C. P. Malone, P. V. Johnson, B. R. Lewis, R. Laher, S. Wang, V. Swaminathan, D. Nuyujukian, and I. Kanik, Electron-Impact Excitation of X 1Σ +g(v"=0) to the a" 1Σ+g, b1Πu, c3 1Π ;u, o3 1Πu, b' 1Σ+u, c'4 1Σ+u, G 3Πu, and F 3Πu States of Molecular Nitrogen, Physical Review A: Atomic, Molecular and Optical Physics, 77, 012704 (2008).
  16. P. V. Johnson, C. P. Malone, M. A. Khakoo, J. W. McConkey and I. Kanik, Electron Collisions with Constituents of Planetary Atmospheres, Journal of Physics Conference Series, 88, 012069 (2007).
  17. M. A. Khakoo, S. Wang, R. Laher, P. V. Johnson, C. P. Malone, and I. Kanik, Direct evidence for channel-coupling effects in molecules: electron impact excitation of the a" 1Σ+g state of N2, Journal of Physics B: Atomic, Molecular, and Optical Physics: Fast Track Communication, 40, F167-F173 (2007).
  18. G. E. Orzechowska, J. D. Goguen, P. V. Johnson, A. Tsapin, and I. Kanik Ultraviolet Photolysis of Amino Acids in a 100K Water Ice Matrix: Application to the Outer Solar System Bodies, Icarus , 187, 584-591 (2007).
  19. P. V. Johnson, L. W. Beegle, H. I. Kim, I. Kanik, and G. A. Eiceman, Ion Mobility Spectrometry in Space Exploration, International Journal of Mass Spectrometry, 262, 1-15 (2007).
  20. P. W. Zetner, P. V. Johnson, Differential cross sections for electron impact excitation out of the ( ... 6s6p 1P1) state of barium Journal of Physics B: Atomic, Molecular and Optical Physics, 39, 455-462 (2006).
  21. S. Wang, P. V. Johnson, C. P. Malone, I. Kanik and M. A. Khakoo, Transmission Effects in Unfolding Electronic-Vibrational Electron-Molecule Energy Loss Spectra, Physical Review A: Atomic, Molecular, and Optical Physics, 73, 034702 (2006).
  22. P. V. Johnson, C. P. Malone, I. Kanik and M. A. Khakoo, Integral cross sections for the direct excitation of the A 3Σ+u, B 3Πg, W 3&Deltau, B' 3Σ-u, a' 1Σ-u, a 1Πg , w1&Deltau and C 3Πu electronic states in N2 by electron impact, Journal of Geophysical Research: Space Physics, 110, A11311 doi:10.1029/2005JA011295 (2005).
  23. H. I. Kim, P. V. Johnson, L. W. Beegle, I. Kanik and J. L. Beauchamp, Electrospray Ionization Ion Mobility Spectrometry of Carboxylate Anions: Ion Mobility and a Mass-Mobility Correlation, Journal of Physical Chemistry A, 109, 7888-7895 (2005).
  24. P. V. Johnson and P. W. Zetner, Electron Impact Coherence Parameters for Superelastic Transitions Terminating on the (…6s6p 1P1) Level of the Barium Atom, Journal of Physics B: Atomic, Molecular and Optical Physics, 38, 2793-2810 (2005).
  25. P. V. Johnson, J. W. McConkey, S. S. Tayal, and I. Kanik, Erratum: Collisions of Electrons with Atomic Oxygen: Current Status, The Canadian Journal of Physics, 83, 1071-1072 (2005).
  26. P. V. Johnson, J. W. McConkey, S. S. Tayal, and I. Kanik, Collisions of Electrons with Atomic Oxygen: Current Status, The Canadian Journal of Physics, 83, 589-616, (2005).
  27. M. A. Khakoo, P. V. Johnson, I. Ozkay, P. Yan, S. Trajmar and I. Kanik, Differential Cross Sections for the Electron Impact Excitation of the A 3Σ+u, B 3Πg, W 3&Deltau, B' 3Σ-u, a' 1Σ-u, a1Πg, w 1Δu and C 3Πg States of N2, Physical Review A: Atomic, Molecular, and Optical Physics, 71, 062703, 1-20, (2005).
  28. P. V. Johnson, H. I. Kim, L. W. Beegle and I. Kanik, Electrospray Ionization Ion Mobility Spectrometry of Amino Acids: Ion Mobilities and a Mass-Mobility Correlation, Journal of Physical Chemistry A, 108, 5785-5792 (2004).
  29. P. V. Johnson, I. Kanik, M. A. Khakoo, J. W. McConkey, and S. S. Tayal, Low Energy Differential and Integral Cross Sections for the 2s22p4 3P → 2p33s3So Excitation in Atomic Oxygen, Journal of Physics B: Atomic, Molecular and Optical Physics, 36, 4289-4299 (2003).
  30. P. V. Johnson, I. Kanik, D. E. Shemansky, and X. Liu, Electron-Impact Cross Sections of Atomic Oxygen, Journal of Physics B: Atomic, Molecular, and Optical Physics, 36, 3203- 3218 (2003).
  31. P. V. Johnson, P. W. Zetner, D. Fursa, I. Bray, Orientation Dependence of Inelastic Scattering from the Laser-Excited (…6s6p 1P1) State of Barium, Physical Review A: Atomic, Molecular, and Optical Physics, 66, 022707, 1-12 (2002).
  32. P. V. Johnson, C. Spanu, and P. W. Zetner, Transferred Orbital Angular Momentum in the Low Energy Electron Impact Excitation of the 1S0 to 1P1 Transition in Barium, Journal of Physics B: Atomic, Molecular and Optical Physics, 34, 4311-4321 (2001).
  33. P. V. Johnson and I. Kanik, Absolute Differential Elastic and Inelastic Electron Scattering Cross Sections of Molecular Oxygen (O2) in the 20 to 100 eV Impact Energy Range, Journal of Physics B: Atomic, Molecular and Optical Physics, 34, 3041-3051 (2001).
  34. C. Noren, I. Kanik, P. V. Johnson, P. McCartney, G. K. James, and J. M. Ajello, Electron-Impact Studies of Atomic Oxygen: II. Emission Cross Section Measurements of the OI 3S0 6 3P Transition (130.4 nm), Journal of Physics B: Atomic, Molecular and Optical Physics, 34, 2667-2677 (2001).
  35. I. Kanik, P. V. Johnson, M. B. Das, M. A. Khakoo, and S. S. Tayal, Electron-Impact Studies of Atomic Oxygen: I. Differential and Integral Cross Sections; Experiment and Theory, Journal of Physics B: Atomic, Molecular and Optical Physics, 34, 2647-2665 (2001).
  36. I. Kanik, P. V. Johnson, and G. K. James, Electron-Impact-Induced Emission and Excitation Cross Sections of Xenon at Low Energies, Journal of Physics B: Atomic, Molecular and Optical Physics, 34, 1685-1693 (2001).
  37. P. W. Zetner, P. V. Johnson, Y. Li, G. Csanak, R. E. H. Clark, and J. Abdallah Jr., Electron Impact Excitation of the (...6s6p 1PJ) Levels in Ytterbium, Journal of Physics B: Atomic, Molecular and Optical Physics, 34, 1619-1639 (2001).
  38. P. V. Johnson, C. Spanu, and P. W. Zetner, Low Energy Electron Impact Coherence Parameters for the 1S0 - 1P1 Excitation in Barium, Journal of Physics B: Atomic, Molecular and Optical Physics, 33, 5367-5386 (2000).
  39. P. V. Johnson, B. Eves, P. W. Zetner, D. Fursa, and I. Bray, Electron-Impact Excitation of the (...6s5d 1D2) to (...6s6p1P1) Transition in Barium, Physical Review A: Atomic, Molecular, and Optical Physics, 59, 439-454 (1999).
  40. P. V. Johnson, Y. Li, P. W. Zetner, G. Csanak, R. E. H. Clark, and J. Abdallah Jr., Electron-Impact Excitation of the (...6s6p 1P1) Level in Ytterbium, Journal of Physics B: Atomic, Molecular and Optical Physics, 31, 3027-3041 (1998).

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