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  Richard Bennett  

Roger Wiens
Techncial Staff Member in the Space and Atmospheric Science Division
Los Alamos National Laboratory
Los Alamos, NM

Present Position:
Technical Staff Member in the Space and Atmospheric Science Division
  • Co-investigator and LANL Project Lead for the Genesis Discovery Mission. Significant responsibilities in project leadership, development of large-aperture solar wind concentrator, and in collector material selection & testing.
  • Science analysis Co-investigator for DS-1's PEPE (Plasma Experiment for Planetary Exploration). Emphasis on plasma interaction with small asteroids.
  • Co-investigator on a Mars Instrument Development Project to produced and test a prototype Laser-Induced Breakdown Spectroscopy (LIBS) instrument capable of rapidly determining elemental composition of planetary surfaces anywhere within 60 ft of a rover or lander.
  • Co-investigator on an internal project to develop a LIBS companion instrument using Laser-Induced Mass Spectrometry (LIMS) which could determine isotopic compositions of planetary surfaces anywhere within 60 ft of a rover or lander.
Previous Positions:
Geological and Planetary Science Division, Caltech - 1990 to 1997
  • Staff Scientist:,

    Instrument development for the Genesis Discovery mission. Developed & tested solar wind concentrator prototype. Meteorite and planetary surface analyses using resonance ionization mass spectrometry.

Isotope Laboratory, Scripps Institution of Oceanography, UC San Diego - 1988 to 1990

  • Post-Doctoral Research Physicist:

    Installed static N2 & noble gas mass spectrometer for terrestrial sample analyses, including cosmogenic surface exposure dating, mantle and crustal gas studies, and amino acids in meteorites and the K/T boundary. Supervisor: H. Craig; collaborators: D. Lal, K. Marti, J. Bada.
U. of Minnesota and Johnson Space Center, Houston - 1985 to 1988

  • NASA Graduate Student Research Fellow:

    Studied noble gases and nitrogen in SNC meteorites and the Mars atmosphere
6+ weeks as visiting scientist at each of the following institutions-

  • Physikalisches Institut, University of Bern, Switzerland. Summer, 1995.
  • Photon Interactions with Matter Research Group, Argonne National Laboratory, ongoing 1991-96.
  • Johnson Space Center, ongoing 1985-1988.
Univ. of Minnesota, Minneapolis, 1988, Ph.D. Physics (Geology minor), Advisor: R.O. Pepin.
Wheaton College, IL, 1982, B.S. (with High Honors) in Physics

Research Interests:
  • Solar wind composition, and solar system elemental and isotopic abundances
  • Composition and evolution of comets and outer solar system bodies · Photon and ion interactions with planetary surfaces
  • Planetary surface compositions
  • Mass spectrometry instrument development
  • American Geophysical Union (AGU), Life Member
  • American Physical Society (APS)
  • American Scientific Affiliation (ASA)
  • Affiliation of Christian Geologists (ACG)
  • Sigma Pi Sigma, Society of Physics Students
Selected Publications:
  • Dr. Wiens R.C., Becker R.H., and Pepin R.O. (1986) The case for a martian origin
    of the shergottites, II.Trapped and indigenous gas components in EETA 79001
    glass. Earth Planet. Sci. Lett. 77, 149-158.
  • Wiens R.C., Burnett D.S., Neugebauer M., and Pepin R.O. (1991) Solar-wind
    krypton and solid/gas fractionation in the early solar nebula. Geophys. Res.
    Lett. 18, 207-210.
  • Wiens R.C., Burnett D.S., Calaway W.F., and Pellin M.J. (1993) Experimental
    Studies of the Role of Photodesorption in the Formation of Planetary Na
    Atmospheres. Bull. Am. Astron. Soc. 25, 1089.
  • Craig H. and Wiens R.C. (1996) Gravitational enrichment of 84Kr/36Ar ratios in
    the Greenland Ice Sheet Science 271, 1708-1710.
  • Wiens R.C., Burnett D.S., Calaway W.F., Hansen C.S., Lykke K.R., and Pellin
    M.J. (1997) Sputtering products of sodium sulfate: Implications for Io's surface
    and for sodium-bearing molecules in the torus. Icarus 128, 386-397.
  • Wiens R.C., Huss G.R., and Burnett D.S. (1999) The solar oxygen isotopic
    composition: Predictions and implications for solar nebular processes.
    Meteoritics and Planetary Science 34, 99-108. button
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Curator: Aimee Meyer
Updated: November 2009

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