Sample
Name
alpha-N2 crystalline
Date
1992-01-01
Parent sample
beta-N2 crystalline
Thickness
10.0 $\pm$ 0.1 $mm$
Surface roughness
very low
Substrate material
between 2 MgF2 windows
Substrate comments
Generic sample of experiments of beta N2 in different spectral ranges
Temperature
33.0 $\pm$ 0.1 $K$
Temperature max
35.6 $\pm$ 0.1 $K$
Comments
temperature maxi is formation temperature (beta-alpha transition)
Type
molecular gas
Fluids
Fluid temperature
33.0 $\pm$ 0.1 $K$
Fluid pressure
8.0e-07 $\pm$ 3.0e-07 $bar$
Comments
in quasi-thermodynamic equilibrium with liquid
Number
1
Layers
Title
Phase transformation to N2 solid alpha phase

Precursors

Samples

Produced sample

Sample
alpha-N2 crystalline (this sample)
Processing steps
Step Chronology Date Type Process Changes
#1 on parent sample 1992-01-01 thermal slow cooling (0.5K/h) below 35.6K under small vertical thermal gradient (0.5K/mm) monocrystals of beta-N2 transformed to phase alpha-N2 by solid-solid transition