Speaker
Dr
Sergey Pavlov
(German Aerospace Center)
Description
The analysis of ateroid’s surface grains allows to match remote observations and modeling of its history and current properties with laboratory experiments. Mass spectrometry and electron microscopy of the dust enables detailed study of the history of asteroidal regolith and compare the results with theoretical considerations of the evolution of rubble piles in the inner solar system. A correlated study including consequential Raman and infrared microspectroscopy, synchrotron radiation X-ray tomographic microscopy (SRXTM) and noble gas mass spectroscopy has been implemented for the determination of cosmic-ray exposure ages and trapped Xe content in a few particles returned by the JAXA’s Hayabusa space probe from the near-Earth asteroid 25143 Itokawa, the first successful sample return mission to an asteroid. New data support the uniformly short exposure to cosmic rays of the Itokawa regolith of <8 Ma suggesting a freshly rejuvenated regolith.
Primary author
Dr
Sergey Pavlov
(German Aerospace Center)
Co-authors
Prof.
C. Alwmark
(Department of Geology, University of Lund, Sweden)
Dr
F. Marone
(Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland)
Prof.
H. Busemann
(Department of Earth Sciences, ETH Zurich)
Prof.
Heinz-Wilhelm Hübers
(German Aerospace Center (DLR) and Humboldt University Berlin)
Dr
I. Weber
(Institut für Planetologie, Westfälische Wilhelms-Universität Münster, Münster, Germany)
Dr
J.D. Gilmour
(University of Manchester, School of Earth, Atmospheric and Environmental Sciences (SEAES), Manchester, UK)
Dr
M.M.M. Meier
(Department of Geology, University of Lund, Sweden)
Mrs
N.H. Spring
(University of Manchester, School of Earth, Atmospheric and Environmental Sciences (SEAES), Manchester, UK)
Dr
S. Bajt
(Photon Sciences, Deutsches Elektronen-Synchrotron, Hamburg, Germany)
Dr
Stampanoni M.
(Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland)
Dr
U. Böttger
(German Aerospace Center (DLR), Berlin, Germany)
Dr
U. Heitmann
(Institut für Planetologie, Westfälische Wilhelms-Universität Münster, Münster, Germany)
Dr
U. Schade
(Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany)
Dr
W. Fujiya
(Max-Planck-Institut für Chemie, Mainz, Germany)
