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Experiment

Title
  Optical constants of Mg-rich glassy silicates (1-x)MgO-xSiO2, 10-300 K, UV-mm range
UID
  EXPERIMENT_KD_20220331

References

DOI
  10.26302/SSHADE/EXPERIMENT_KD_20220331
Data reference
  Demyk, Karine (2015): Optical constants of Mg-rich glassy silicates (1-x)MgO-xSiO2, 10-300 K, UV-mm range. SSHADE/STOPCODA (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_KD_20220331
Publications
  - Demyk et al., 2022, Astron. Astrophys., --, --

Owner

Database(s)
  STOPCODA
Experimentalists
  - Karine Demyk

Spectra preview
Experiment type

Type(s)
  laboratory measurement
Description
  UV to mm optical constants of four Mg-rich glassy silicates (1-x)MgO-xSiO2, x=0.35, 0.40 and 0.50 (two samples), at 10, 100, 200 and 300 K. The optical constants are calculated from mass absorption coefficients measured in the 5 - 1000 µm (2000-10 cm-1) range and extrapolated in the range 0.024 - 5 µm and 1000 - 100000 µm.
Number of spectra
  16

Variable parameters

Variable type(s)
  - temperature
  - spectrum type
Comments
  The grain temperature is varied from 10 K to 300 K.

Location

Laboratory
  Institut de Recherche en Astrophysique et Planétologie (IRAP)

Instrument #1

Instrument
  Kramers-Kronig calculation of optical constant and numerical extrapolation from UV to cm

Spectral parameters

Standard medium
  vacuum
Observation mode
  spectrum
Spectral range type(s)
  UV, Vis, NIR, MIR, FIR, sub-mm, mm, cm
Valid spectral range(s)

  | Min - Max (μm) | Sampling (μm) | Resolution (μm) | Position accuracy (μm) | Absorption edge
  #1 | 0.024 - 100000.0 |  |  |  |

Comments
  Spectra measured in the 5 - 1000 µm (2000-10 cm-1) range with a resolution of 2cm-1 above 300cm-1 and 1cm-1 below. The optical constants are extrapolated in the range 0.024 - 5 µm and 1000 - 100000 µm.

Angular parameters

Comments
  transmission

Spatial parameters

Observation mode
  single spot

History

Parent experiment
  Mass Absorption Coefficient of 4 Mg-rich glassy silicates (1-x)MgO-xSiO2, 10 - 300 K
Date begin - end
  2015-04-09 - 2015-04-09

#### Versions

Release date
  2022-05-31 13:17:13 UTC+0000
Version (Date)
  #1 (2022-03-31 14:37:11 UTC+0000, Updated: 2022-09-14 07:43:32 UTC+0000)