Helene Piet

Postdoc Rsrch Assoc FSC 2008
Post Doctoral Scholars
TEMPE Campus
Mailcode
6004

Biography

I am a mineral physicist and postdoctoral researcher in the School of Earth and Space Exploration at Arizona State University. I study the behavior of planetary relevant materials under high pressures and high temperatures. My current research mainly focuses on hydrogen and water storage in planetary interiors. 

Education

  • Ph.D. Civil Engineering and Environment, �cole Polytechnique F�d�rale de Lausanne, Switzerland 2016
  • M.S. Geochemistry, Institut de Physique du Globe de Paris, France 2012
  • B.S. Earth and Planetary Science, �cole et Observatoire des Sciences de la Terre de Strasbourg, France 2010

 

Google Scholar

Research Interests

I investigate the physical and chemical properties of minerals at extreme conditions to better understand the processes that shaped planets as they currently are. My approaches vary from high pressure and high temperature laboratory experiments to numerical simulations.

I simulate the conditions in planetary interiors using the laser-heated diamond anvil cell coupled with in situ analytical techniques such as synchrotron X-ray diffraction, Raman or infrared spectroscopy. I then use the crystal and vibrational properties of minerals to infer the properties of corresponding reservoirs at macroscales. I also use ex situ spectroscopic techniques in the electron microscope to get information about the chemical composition of these minerals, like element partitioning between minerals, which I use to model interactions between deep reservoirs.

My research interests range from hydrogen and water storage in minerals at extreme conditions to planetary core formation and evolution.

 

Publications

S.S. Lobanov, N. Holtgrewe, J. Badro, H. Piet, F. Nabiei and A.F. Goncharov, in review. No radiative heat transport through pyrolitic lower mantle, Science.

H. Piet, J. Badro and P. Gillet, 2017. Geochemical constraints on the size of the Moon-forming giant impactor, Geophysical Research Letters.

T. Dennenwaldt, F. Nabiei, D. Alexander, J. Badro, P. Gillet, H. Piet and C. Hébert, 2017. Electron energy loss near edge structures as a tool to elucidate natural and artificial minerals structures, Microscopy & Microanalysis.

H. Piet, J. Badro, F. Nabiei, T. Dennenwaldt, S.-H. Shim, M. Cantoni, C. Hébert and P. Gillet, 2016. Spin and valence dependance of iron partitioning in Earth's deep mantle, Proceedings of the National Academy of Sciences.

J. Badro, J.P. Brodholt, H. Piet, J. Siebert and F.J. Ryerson, 2015. Core formation and core composition from coupled geochemical and geophysical constraints, Proceedings of the National Academy of Sciences.

 

Research Activity

Hydrogen Gas Loading System.

Expertise Areas