PSI.NBI.DK Grupper+

PSI.NBI.DK

PSI er skrevet af fysikstuderende til fysikstuderende. Målet er at gøre hverdagen lettere–både fagligt og socialt.

Admins

Arvid
Kim
Schou
Et
Boeje
Fiana
Amaliec
Fitfot

Mössbauer spectroscopy on Mars analogous rocks

a rock (abbreviated UT97) believed to contain very pure hematite. This is done

as part of a larger project, to try to explain some results obtained by the Mars Exploration

Rover, Opportunity, taken on the Meridiani Plains on Mars. The experiments from Mars

consist (primarily) of imaging of an instrument, the Rock Abrasion Tool (RAT). The RAT

has built in permanent magnets (of Danish design), which were designed to enable us to

detect even minute amounts of a putative strongly magnetic minerals present in rocks that

were abraded by the RAT. On the Meridiani Plains immediately after landing, bedrock

was detected near the rover - and this bedrock has been found to contain both jarosite

and hematite. Grinding experiments by the Opportunity rover on hematite-rich rocks in

the Meridiani region, and subsequent imaging by Pancam of surfaces of the magnets built

into the RAT, have revealed the presence of some magnetic material in these rocks, which

is apparently substantially stronger (magnetically) than hematite. However, Mössbauer

studies of the material found no other magnetic phases than hematite, which is too weak

to be attracted by the magnets by itself. It is of great importance (in the aspect of understanding

Martian history) to understand how this rock was formed. If it was possible to

find a good resembling mineral sample on Earth, it could help us understand the geological

history of our red neighbor planet and possibly help us understand its former climate and

of course the amount and extension of liquid water on and below its surface in its earlier

history. Previous studies of a Mars analogous rock containing around 1 %wt magnetite,

have proved to produce results much like those obtained by Opportunity [1]. However, it

is of interest to know if similar results could potentially be achieved during abbration of

a rock without a strong magnetic phase such as magnetite. The hematite-rich UT97 will

be the basis of this experiment.

Titel Mössbauer spectroscopy on Mars analogous rocks
Emne Fysik
Forfattere Christian Lundmand Jensen
Vejleder Morten Bo Madsen og Kristoffer Leer
År 2010
Karakter 10
Kort Resume The aim of this project is to utilize the advantages of Mössbauer spectroscopy in characterizing
Kommentarer
Projekt

Oversigt over andre Projekter

Tags: projekter, bachelorprojekt, Fysik.

Kontakt

PSI.NBI.dk hostes af Niels Bohr Institutet på en server sponsoreret af KUUR. PSI udvikles og administreres udelukkende af studerende på fysik.

Du kan til envher tid kontakte de travle redaktører på psi@fys.ku.dk.

Fælles coolness

PSI køres 100% af fysikstuderende. Derfor afhænger PSI også af vores fælles bidrag til den fælles coolness. Kun få har direkte datalogagtige tendenser og sidder hele natten og koder PSI, men alle kan tilføje relevant, nødvendigt og interessant indhold til PSI.

Så husk det: Vores fælles coolness skyldes alle de mange der har bidraget til PSI på den ene eller anden måde. Giv dem lidt street-cred når du møder dem næste gang. På den måde kan PSI blive ved med at gøre studiet sjovere og lettere.

Lovgivning og Copyright

Det er trivielt, men vi nævner det alligevel: Alt hvad der udgives på PSI - af redaktører eller brugere - skal overholde dansk lovgivning.

Offentligt indhold gjort tilgængelig for almenheden under Creative Commons some rights reserved medmindre andet angives.

2019 PSI