TOF (time-of-flight) measurements of pulsed neutrons for texture analysis of low symmetry materials

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:5300420

Larson, A C; Vergamini, P J; Lujan, M Jr ^[1]; Wenk, H R ^[2]

---

1. Los Alamos National Lab., NM (USA)
2. California Univ., Berkeley, CA (USA). Dept. of Geology and Geophysics

The single crystal diffractometer at LANSCE, SCD, provides and ideal capability for the study of preferred orientation in geological samples by time-of flight (TOF) measurement of pulsed neutrons. The 2-d position sensitive neutron detector with the large wave length range allows one to measure the complete distribution of intensities for several poles very quickly. Each histogram covers about {pi}{sup 2}/16 radians of reciprocal space and contains information from all possible poles visible with the wave length range used, usually about 0.5 to 5.0{Angstrom}. With this method complete pole figures of many lattice planes can be constructed from only 12 to 20 sample orientations as compared to over 1000 sample settings per lattice plane using conventional diffractometers. Pole figures from measurements of experimentally deformed standard samples of calcite and quartzite with known history of deformation provide information about deformation mechanisms and their temperature/strain history. This information can be applied to interpret preferred orientation of naturally deformed rocks. 6 refs., 10 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5300420
• Report Number(s): LA-UR-89-4192; CONF-891119-49; ON: DE90004858
• Resource Relation: Conference: Materials Research Society fall meeting, Boston, MA (USA), 27 Nov - 2 Dec 1989
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
58 GEOSCIENCES
CALCITE
TEXTURE
QUARTZITES
ROCKS
DEFORMATION
GEOLOGY
LIMESTONE
ORIENTATION
TIME-OF-FLIGHT METHOD
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
METAMORPHIC ROCKS
MINERALS
OXYGEN COMPOUNDS
SEDIMENTARY ROCKS
360602* - Other Materials- Structure & Phase Studies
580000 - Geosciences