spacer spacer spacer
spacer spacer spacer
spacer
NASA Logo - Jet Propulsion Laboratory    + View the NASA Portal  
JPL Home Earth Solar System Stars & Galaxies Technology
spacer
spacer spacerGenesis Banner spacer
spacer
Mission Science Technology Education People Multimedia Gallery Get Involved Genesis Home
spacer
spacer spacer
 
Careers in Genesis Back to Genesis homepage   src="../../images/spacer.gif"   PEOPLE

Roger Wiens

Roger Wiens 
Technical 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.

Education:
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

Memberships:

  • 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.   

 
     
  grey bottom nav bar  
spacer spacer spacer
spacer
FIRST GOV + Freedom of Information Act
+ The President's Management Agenda
+ FY 2002 Agency Performance and accountability report
+ NASA Privacy Statement, Disclaimer, and Accessiblity Certification
+ Freedom to Manage
NASA Home Page

 

spacer
spacer spacer spacer
spacer spacer spacer