PREPARATION OF SAMPLES FOR THE GEIGER COUNTER DIFFRACTOMETER

THE SAMPLE IS GROUND UNTIL FURTHER GRINDING DOES NOT INCREASE THE PRECISION OF THE INTEGRATED INTENSITY MEASUREMENTS. A VIBRATORY BALL MILL IS USED FOR THE FINAL GRINDING. SAMPLES HAVING RANDOM ORIENTATION ARE OBTAINED BY USING A SPECIAL HOLDER INTO WHICH THE POWDER IS ALLOWED TO FALL GENTLY WITHOUT COMPACTING IT. SAMPLES PREPARED AS DESCRIBED GAVE HIGHLY REPRODUCIBLE TOTAL INTENSITIES. /PCA/

• Authors:
  • Copeland, L E
  • Bragg, R H
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Diffraction; Grinders; Grinding; Samples
• Uncontrolled Terms: Preparation
• Old TRIS Terms: Diffractometers; Geiger counter; Grinding mills
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213538
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 92
• Files: TRIS
• Created Date: Jun 1 1970 12:00AM