Optical constants of cellulose pyrolyzed at 800°C from UV to FIR

Spectrum

Title: Optical constants of cellulose pyrolyzed at 800°C from UV to FIR

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Data

Unit: Range: Valid spectral range(s): 20.0 - 50000.0 micron

X Axis

Scale: Inverted:

Y Axis

Scale (left): Scale (right):

Legend

Position: Visibility:

References

DOI

10.26302/SSHADE/EXPERIMENT_HM_20170912_101

Data reference

Jäger, Cornelia; Mutschke, Harald; Henning, Thomas (1997): Optical constants from UV to FIR for cellulose pyrolized between 400 and 1000°C. SSHADE/DOCCD (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_HM_20170912_101

Publications

Jäger et al., 1998, Astron. Astrophys., 332, 291 - 299

Owner

Database

DOCCD

Experimentalists

Spectrum type

Experiment type: laboratory measurement
Type: optical constants
Comments: The spectrum was resampled between 0.2 and 562 µm on a logarithmic wavelength scale

Instrument #1

Instrument: Lambda 19 – reflection UV

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	0.2 - 0.319		0.001

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).

Observation geometry: specular
Observation mode: fixed angles
Incidence angle: 12.0°
Emergence angle: 12.0°
Azimuth angle: 180.0°
Phase angle: 24.0°
Resolution illumination: 6.0°
Resolution observation: 6.0°

Polarization parameters

Illumination

Type of polarization: no

Observation

Type of polarization: no

Spatial parameters

Observation mode: single spot
Resolutions: 5.0 $None$

Instrument #2

Instrument: Lambda 19 – reflection vis

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

Vis

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	0.319 - 0.86		0.001

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).

Observation geometry: specular
Observation mode: fixed angles
Incidence angle: 12.0°
Emergence angle: 12.0°
Azimuth angle: 180.0°
Phase angle: 24.0°
Resolution illumination: 6.0°
Resolution observation: 6.0°

Polarization parameters

Illumination

Type of polarization: no

Observation

Type of polarization: no

Spatial parameters

Observation mode: single spot
Resolutions: 5.0 $None$

Instrument #3

Instrument: Lambda 19 – reflection NIR

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

NIR

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	0.86 - 3.2

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).

Observation geometry: specular
Observation mode: fixed angles
Incidence angle: 12.0°
Emergence angle: 12.0°
Azimuth angle: 180.0°
Phase angle: 24.0°
Resolution illumination: 6.0°
Resolution observation: 6.0°

Polarization parameters

Illumination

Type of polarization: no

Observation

Type of polarization: no

Spatial parameters

Observation mode: single spot
Resolutions: 5.0 $None$

Instrument #4

Instrument: BRUKER 113v – reflection Mid-IR

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

MIR

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	2.0 - 25.0

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).

Observation geometry: specular
Observation mode: fixed angles
Incidence angle: 12.0°
Emergence angle: 12.0°
Azimuth angle: 180.0°
Phase angle: 24.0°
Resolution illumination: 6.0°
Resolution observation: 6.0°

Polarization parameters

Illumination

Type of polarization: no

Observation

Type of polarization: no

Spatial parameters

Observation mode: single spot
Resolutions: 5.0 $None$

Instrument #5

Instrument: BRUKER 113v – reflection Far-IR

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

FIR

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	15.0 - 500.0

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).

Observation geometry: specular
Observation mode: fixed angles
Incidence angle: 12.0°
Emergence angle: 12.0°
Azimuth angle: 180.0°
Phase angle: 24.0°
Resolution illumination: 6.0°
Resolution observation: 6.0°

Polarization parameters

Illumination

Type of polarization: no

Observation

Type of polarization: no

Spatial parameters

Observation mode: single spot
Resolutions: 5.0 $mm$

Instrument #6

Instrument: BRUKER 113v – transmission Far-IR

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

FIR

Valid spectral range(s)

	Min - Max ( ${\mu}m$ )	Sampling ( ${\mu}m$ )	Resolution ( ${\mu}m$ )	Position accuracy ( ${\mu}m$ )	Absorption edge
#1	15.0 - 500.0

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir. Emergence angle in transmission is larger than 90° (=180°-i).

Observation geometry: direct
Observation mode: fixed angles
Resolution illumination: 6.0°
Resolution observation: 6.0°

Polarization parameters

Illumination

Type of polarization: no

Observation

Type of polarization: no

Spatial parameters

Observation mode: single spot
Resolutions: 5.0 $None$

Sample

Name: Embedded/polished cellulose pellet pyrolyzed at 800°C

Spectrum history

Experiment

Optical constants from UV to FIR for cellulose pyrolized between 400 and 1000°C

Date begin

1997-01-01

Release date

2018-01-31 23:51:01+0000 UTC

Version (Date)

#1 (2018-01-31 23:51:01+0000 UTC, Updated: 2019-08-16 09:21:21+0000 UTC)

History

Date	Mode	Version	Status	Comments
2017-11-03 16:24:31+0000 UTC	first import	#1	valid version	first version

Spectrum analysis

Analysis: The optical constants were determined from the reflectance (spectra measured with FTIR and Lambda 19 were merged) by a Lorentzian-oscillator fit.
Quality flag: 4