Method and apparatus for measuring incombustible content of coal mine dust using gamma-ray backscatter
- Copan, OK
Method and apparatus for measuring incombustible content of particulate material, particularly coal mine dust, includes placing a sample of the particulate material in a container to define a pair of angularly oriented surfaces of the sample, directing an incident gamma-ray beam from a radiation source at one surface of the sample and detecting gamma-ray backscatter from the other surface of the sample with a radiation detector having an output operating a display to indicate incombustible content of the sample. The positioning of the source and detector along different surfaces of the sample permits the depth of the scattering volume defined by intersection of the incident beam and a detection cone from the detector to be selected such that variations in scattered radiation produced by variations in density of the sample are compensated by variations in the attenuation of the incident beam and the gamma-ray backscatter.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 3983392
- OSTI ID:
- 862657
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method and apparatus for measuring incombustible content of coal mine dust using gamma-ray backscatter. [Patent application]
Tests for analyzing the incombustible content of coal mine dust using instruments employing a gamma-ray backscatter technique. Bureau of Mines technical progress report
Related Subjects
apparatus
measuring
incombustible
content
coal
mine
dust
gamma-ray
backscatter
particulate
material
particularly
placing
sample
container
define
pair
angularly
oriented
surfaces
directing
incident
beam
radiation
source
surface
detecting
detector
output
operating
display
indicate
positioning
permits
depth
scattering
volume
defined
intersection
detection
cone
selected
variations
scattered
produced
density
compensated
attenuation
volume defined
particulate material
radiation detector
radiation source
incident beam
scattered radiation
radiation produced
coal mine
measuring incombustible
mine dust
incombustible content
incident gamma
detecting gamma
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