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

Conference · Wed Jan 01 00:00:00 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 (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 976512
• Report Number(s): LA-UR-03-0329; TRN: US201017%%660
• Resource Relation: Conference: Submitted to: 34th Lunar and Planetary Science Conference, Houston, TX, March 17-21, 2003
• Country of Publication: United States
• Language: English

Related Subjects

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