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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Plastic GDS369 White Tyvek DESCRIPT
DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: GDS369
MATERIAL_TYPE: Plastic
MATERIAL: White Plastic
FORMULA: CH4 compound
FORMULA_HTML: CH4 compound
COLLECTION_LOCALITY: Purchased from store in Golden, Colorado
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
SAMPLE_DESCRIPTION:
Sample cut from a new Tyvek suit. This sample has a thickness of 0.1 mm and is white in color.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum was measured on side of fabric originally facing outward on suit. The spectrum decreases monotonically from the ultra violet to 2.25 microns beyond which the spectrum is dominated by strong absorptions. There are some weak absorptions at 1.3932, 1.4190, and 1.4224 microns. There are C-H stretch absorptions at 1.7304, 1.7653, and 1.8226 microns. There are weaker absorptions at 2.0103 and 2.0534 microns. There are also C-H combination bands at 2.3108, 2.3508 microns and and a broad complex of bands centered around 2.415 microns.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
| LIB_SPECTRA_HED: | where | Wave Range | Av_Rs_Pwr | Comment |
|---|---|---|---|---|
| LIB_SPECTRA: | splib05a r 10518 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 29074 | g.s.= |