- Database
- Experimentalists
- 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
- 35.0 $\pm$ 0.1 $K$
- Temperature max
- 35.6 $\pm$ 0.1 $K$
- Comments
- temperature maxi is formation temperature (beta-alpha transition)
- Type
- molecular gas
- Fluids
-
- $N_2$ 100.0 $\pm$ 2.0e-04 %
- 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
-
- Layer #1 , 10.0 $mm$
- Title
- Phase transformation to N2 solid alpha phase
- Samples
- 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