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

• 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.

• 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.

• NASA Graduate Student Research Fellow:
  
  Studied noble gases and nitrogen in SNC meteorites and the Mars atmosphere

• 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.

• 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

• 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.