Experiment
Title
MIR transmission spectra of two Ryugu fragments from chamber C
DOI
10.26302/SSHADE/EXPERIMENT_ZED_20241125_01
Data reference
Dionnet, Zélia; Djouadi, Zahia (2022): MIR transmission spectra of two Ryugu fragments from chamber C. SSHADE/DAYSY (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_ZED_20241125_01
Publications
Database(s)
Experimentalists
Spectra preview
Experiment type
Type(s)
laboratory measurement
Description
Hyper-spectrale MIR spectroscopy of Ryugu framents from chamber C in tranmission (samples crushed in a diamand compression cell)
Number of spectra
6
Variable type(s)
  • sample composition
Laboratory
Institut d'Astrophysique Spatiale (IAS)
Instrument #1
Instrument
SMIS Cary 670 - trans Mid-IR
Sample holder
The sample was crushed in a diamond compression cell, which is transparent in the IR range.
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
MIR
Valid spectral range(s)
Min - Max ($cm^{-1}$) Sampling ($cm^{-1}$) Resolution ($cm^{-1}$) Position accuracy ($cm^{-1}$) Absorption edge
#1 850.0 - 3900.0 4.0 4.0 1.0
Observation geometry
direct
Observation mode
fixed angles
Observation mode
averaged
Spots number
16384
Objective type
x25
Pixels separation
0.66 x 0.66 ${\mu}m$
Pixels number
128 x 128
Image size
84.48 x 84.48 ${\mu}m$
Comments
The resolution changes with the wavelenght according to the Abbe's equation.Average spectra was calculted over various area in sample C0002-FC027 and C0002-FC028. We removed pixels with no sample and noisy pixels from the IR hyperspectral images, by filtering the images based on the signal-to-noise ratio in the range of aliphatic CH stretching modes; we selected the spectra with a signal-to-noise ratio greater than 10
Date begin - end
2022-01-01 - 2023-09-01

Versions

Release date
2024-11-25 15:46:04 UTC+0000
Version (Date)
#1 (2024-11-25 15:46:04 UTC+0000, Updated: 2024-11-25 16:11:00 UTC+0000)