Spectrum

normalized MIR absorbance spectrum of pressed QUE99177 matrix grain N°4, under vacuum and heated at 300°C

Title
normalized MIR absorbance spectrum of pressed QUE99177 matrix grain N°4, under vacuum and heated at 300°C
DOI
10.26302/SSHADE/EXPERIMENT_LB_20170731_002
Data reference
Bonal, Lydie (2011): MIR absorbance spectra of pressed QUE99177 matrix grains (CR Chondrite) under vacuum at different temperatures. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LB_20170731_002
Publications
Database
Experimentalists
Experiment type
laboratory measurement
Type
absorbance
Reference position
1000.0 $cm^{-1}$
Reference spectra
Instrument
Brucker Vertex 70 + Hyperion 3000 – micro-transmission Mid-IR
Sample holder
The diamond windows were loaded into a cell, enabling temperatures up to 300°C under vacuum (from $10^{-4}$ mbar down to $10^{-7}$ mbar). Optical access is permitted from both sides of the cell through KBr windows, thus enabling measurements in transmission.
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
#1 600.0 - 5000.0 1.928712 4.0 0.05
Scan number
400
Observation mode
single spot
Spots number
1
Objective type
x15
Pixels number
1 x 1
Image size
40.0 x 40.0 ${\mu}m$
Resolutions
3.0 ${\pm}$ 1.0 ${\mu}m$
Comments
the typical size of the spot on the sample was 40 x 40 $µm^2$
Name
QUE99177 matrix grains (CR Chondrite) heated at 300°C
Primary constituent(s)
Experiment
MIR absorbance spectra of pressed QUE99177 matrix grains (CR Chondrite) under vacuum at different temperatures
Date begin
2011-06-29
Release date
2018-01-31 23:51:01 UTC+0000
Version (Date)
#1 (2018-01-31 23:51:01 UTC+0000, Updated: 2018-10-12 17:04:49 UTC+0000)
History
Date Mode Version Status Comments
2017-08-02 11:13:21 UTC+0000 first import #1 valid version 2016-09-21: new MIR spectra
Analysis
a linear baseline (as defined between 4000 and 3700 $cm^{-1}$) and a spline baseline were calculated and subtracted from the raw absorbance data. The resulting spectrum was normalized to the intensity of the 10 µm silicate Si–O stretching band (~1000 $cm^{-1}$)
Quality flag
4
Validator(s)