Name: Jari í Hjøllum
  • Ph.D. in Physics, 2008
  • Cand. Scient./Master in Physics, 2004
  • Bachelor in Physics and Mathematics, 2001.
Areas of research/interest:
  • Mars Exploration
  • Møssbauer spectroscopy
  • Nano magnetism
  • Iron Oxides
  • Scientific Programming/Simulation
  • Neutron scattering
  • MuSR - Muon Spin Rotatio
  • Instrumentation
  • Fuel cell development
Member of:

Thesis works


  1. Overview of the magnetic properties experiments on the Mars Exploration Rovers. M. B. Madsen, W. Goetz, P. Bertelsen, C. S. Binau, F. Folkmann, H. P. Gunnlaugsson, J. í Hjøllum, S. F. Hviid, J. Jensen, K. M. Kinch, K. Leer, D. E. Madsen, J. Merrison, M. Olsen, H. M. Arneson, J. F. Bell III, R. Gellert, K. E. Herkenhoff,8 J. R. Johnson,8 M. J. Johnson,5 G. Klingelhöfer, E. McCartney, D. W. Ming, R. V. Morris, J. B. Proton, D. Rodionov, M. Sims, S. W. Squyres, T. Wdowiak and A. S. Yen. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 114, 2009. doi:10.1029/2008JE003098.

  2. Fit;o) - A Mössbauer spectrum fitting program. Jari í Hjøllum and Morten Bo Madsen. arXiv:0912.0449v1 (Submitted on 2 Dec 2009). Download.

Conference contributions


  1. Nano-criticality in small CoO particles. - Jari í Hjøllum, Jonas O. Birk, Kim Lefmann, Niels B. Christensen, Christof Niedermayer, Cathrine Frandsen. Danish Physical Society 2007. Awarded best PhD talk.


  1. Investigations of the antiferromagnetic phase of YBCO nano-particles - Download
    Presented at:

  2. Magnetic Properties of Magnetite Nano-Particles Manufactured by Reverse Micelles - Download
    Presented at:

  3. Fit;o) - A Mössbauer Spectrum Fitting Program - Download
    Presented at:

  4. Neutron scattering investigations of the antiferromagnetic phase of YBCO nano-particles - Download
    Presented at:

  5. "Magnetic properties of  iron oxide nano-particles fabricated by the inverse micellar method" - download.
    Presented at:

"Soft publications"

  • Stærk indikation af liv på Mars in Gamma 121.

    Scientific programming

  • Fit ;o) an analysis program for Moessbauer spectroscopy, developed by me.
  • konvert spm to exp for Moessbauer spectroscopy with PCA2 or PCA3. Should be used with MacFit programme.

    Mars links:

  • Mars Exploration Site
  • Mars Odyssey Page - Launch date: April 7, 2001.
  • MER
  • Beagle 2 - The british led ESA mission to Mars.
  • Mars Express
  • Nozomi - The japanese Mars probe (NASA).

    Great links

  • MFit - A fitting program for Møssbauer spectroscopy.
  • Science World - A great resource for scientific programming.
  • Web-Elements

    Other science resources

  • Seti@Home - The search for extraterristrial intelligence from your desktop!
    [NBIfAFG] - [DTV - library]

    My old science page, in faroese :-( .