@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/ecd58f82-8f96-45e1-9547-dd4a02291bd9>
  skos:prefLabel "Spectrometers/Radiometers"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/665b8764-0c0a-4df7-96f1-4ddae0c6de18> .

<https://gcmd.earthdata.nasa.gov/kms/concept/665b8764-0c0a-4df7-96f1-4ddae0c6de18>
  ns0:altLabel [ ] ;
  skos:definition """X-Ray Fluorescence spectrometer (XRF:

Primary X-Rays are used to excite (fluoresce) X-rays in the
specimen. A fused disc or pressed pellet is used for the
determination of major element concentrations or trace element
abundances in a bulk specimen. The X-ray detector utilizes a set
of diffracting crystals specially positioned to detect one
characteristic X-ray at-a-time. This sequential measurement of
X-rays is termed Wavelength Dispersive Spectroscopy (WDS).

Additional information available at
"http://www.nmnh.si.edu/minsci/labs/xrf.htm\""""@en ;
  skos:prefLabel "XRF"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/ecd58f82-8f96-45e1-9547-dd4a02291bd9> ;
  a skos:Concept .