Use of an ultrasonic/sonic driller/corer to obtain sample powder for chemin, a combined XRD/XRF instrument.

Conference · Wed Jan 01 04:00:00 EST 2003

OSTI ID:976512

Chipera, S J ^[1]; Bish, D L ^[2]; Vaniman, D T ^[3]; Sherrit, S; Bar-Cohen, Yoseph; Blake, D

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1. Steve J.
2. David L.
3. David T.

One of the technical issues that must be addressed before landing an XRD,iXRF spectrometer on an extraterrestrial body is how best to obtain a representative sample powder for analysis. For XRD powder diffraction analyses, it is beneficial to have a powder that is extremely fine grained to reduce preferred orientation effects and to provide a statistically significant number of crystallites to the Xray beam. Although a 2 dimensional detector as used in the CHEMIN instrument will produce good results with poorly prepared powders, the quality of the data will improve with the quality of the sample powder.

• Research Organization: Los Alamos National Laboratory
• Sponsoring Organization: DOE
• OSTI ID: 976512
• Report Number(s): LA-UR-03-0329
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
58 GEOSCIENCES
79 ASTRONOMY AND ASTROPHYSICS
BEAMS
DIFFRACTION
DRILL CORES
DRILLING
GRAIN ORIENTATION
SAMPLERS
SPECTROMETERS
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS