Spectrum

FIR spectrum of an irradiated area of the Tagish Lake meteorite pellet

Title
FIR spectrum of an irradiated area of the Tagish Lake meteorite pellet
DOI
10.26302/SSHADE/EXPERIMENT_ZED_20230127_01
Data reference
Brunetto, Rosario; Lantz, Cateline (2022): FIR spectra of carbonaceous chondrites pellets irradiated by He+ ions. SSHADE/DAYSY (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_ZED_20230127_01
Publications
Experiment type
laboratory measurement
Type
normalized reflectance
Intensity unit
no unit
Reference position
444.04 cm1
Instrument
SMIS NEXUS 6700 - confocal reflexion Far-IR
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
FIR
Valid spectral range(s)
Min - Max (cm1) Sampling (cm1) Resolution (cm1) Position accuracy (cm1) Absorption edge
#1 250.0 - 570.0 4.0 1.0
Observation geometry
confocal
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
0.0°
Azimuth angle
180.0°
Phase angle
0.0°
Observation mode
single spot
Objective type
x15
Image size
300.0 x 300.0 μm
Comments
The resolution changes with the wavelength according to the Abbe's equation.
Name
Pellet of TagishLake powder
Comments
Area of the pellet irradiated by He+ ions at 40 keV and a total fluence of 6.1016ions.cm2
Experiment
FIR spectra of carbonaceous chondrites pellets irradiated by He+ ions
Date begin
2015-03-23
Release date
2023-05-25 13:55:43+0000 UTC
Version (Date)
#1 (2023-05-25 13:55:43+0000 UTC, Updated: 2023-05-25 13:55:43+0000 UTC)
History
Date Mode Version Status Comments
2023-02-08 15:28:31+0000 UTC first import #1 valid version 2022-05-29: First import
Analysis
A baseline correction has been performed and then the spectrum has been normalized by adjusting the height of the maximum of the Si-O band to 1 and the band minimum (Christensen feature) to 0.Some reflectance features are present for wavenumber below 350 cm-1, they are due to non perfect compensation of athmospheric contribution.
Quality flag
4
Validator(s)