Sample
Name
QUE97990 pellet
Date
2018-03-16
Provider
The sample comes from E. Quirico (IPAG)
Thickness
300.0 $\pm$ 100.0 ${\mu}m$
Diameter
13000.0 ${\mu}m$
Mass
0.1 $\pm$ 0.02 $g$
Substrate material
pressed KBr powder
Substrate comments
The KBr substrate is ~ 2 mm thick and 13 mm in diameter. It was formed by pre-pressing powdered KBr into a pellet. KBr is used as a substrate to avoid meteorite pellet break.
Comments
The pellet was prepared by pressing (7 tons for 10 min) about 100 mg of the powdered material (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.
Area of the pellet irradiated by $He^+$ ions at 40 keV and a total fluence of $6.10^{16} ions.cm{-2}$
Temperature
300.0 $\pm$ 5.0 $K$
Temperature max
300.0 $\pm$ 5.0 $K$
Type
ambient air
Fluid temperature
300.0 $\pm$ 5.0 $K$
Fluid pressure
1.0 $atm$
Source
ions accelerator
Chronology
before spectrum
Comments
Irradiation was performed in a vacuum chamber (P~1E-7 mbar)
Particle
Family
atoms and molecules
Type
atomic ions
Particle
$He^+$
Energy
40.0 $keV.particle^{-1}$
Particle fluence
6e+16 $particle.m^{-2}$
Number
1
Layers