Sample
Name
Pellet of Lancé powder
Date
2014-12-15
Provider
IAS, Orsay
Thickness
200.0 $\pm$ 100.0 ${\mu}m$
Diameter
13000.0 ${\mu}m$
Mass
0.098 $\pm$ 0.001 $g$
Substrate material
KBr
Substrate comments
KBr substrate ~ 2 mm thick, 13 mm diameter. The KBr is used as a substrate to avoid meteorite pellet break.
Comments
Pellet prepared by pressing (7 tons for 10 min) 98 mg of the original dust (grain size 1–100 µm) on top of a KBr substrate pellet. The KBr is used as a substrate to avoid pellet break. Thickness of the meteorite pellet is large enough (>200 µm) to avoid contribution of KBr to the spectra.
Lancé pellet after irradiation by $He^+$ ions at 40 keV and a total fluence of $1.10^{16} ions.cm^{-2}$
Temperature
300.0 $\pm$ 5.0 $K$
Temperature max
300.0 $\pm$ 5.0 $K$
Type
vacuum
Fluid pressure
1e-10 $bar$
Source
ions accelerator
Chronology
before spectrum
Comments
Irradiation was performed in a vacuum chamber (P~1E-10 bar)
Particle
Family
atoms and molecules
Type
atomic ions
Particle
$He^+$
Energy
40.0 $keV.particle^{-1}$
Particle fluence
1e+16 $particle.m^{-2}$
Number
1
Layers
Title
Lancé pellet preparation

Precursors

Matters

Produced sample

Sample
Pellet of Lancé powder (this sample)
Processing steps
Step Chronology Date Type Process Changes
#1 before layer formation 2014-12-15 mechanical pressing granular KBr to form the pellet substrat
#2 during layer formation 2014-12-15 mechanical pressing Lancé powder on top of the KBr substrate (7 tons for 6 min)