BaF5 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.607288 n_e = 1.610221	V_d = 49.25 V_e = 48.95	n_F - n_C = 0.012330 n_F' - n_C' = 0.012465	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5336529 C2 = -0.0090692334 C3 = 0.016953197 C4 = 0.00046812228 C5 = -0.00001191248 C6 = 0.000001567133

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.594130
n _s	1.597272
n _r	1.601529
n _C	1.603598
n _C'	1.604181
n _0.6328	1.604728
n _D	1.607179
n _d	1.607288
n _e	1.610221
n _F	1.615929
n _F'	1.616647
n _g	1.622843
n _h	1.628688
n _i	1.638900
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7679
P_C,A'	0.3342
P_d,C	0.2992
P_e,C	0.5371
P_g,d	1.2614
P_g,F	0.5606
P_h,g	0.4740
P_i,g	1.3022
P_C',t	0.8152
P_e,C'	0.4898
P_F',e	0.5211
P_i,F'	1.8046

transmittance: 10 mm
τ_0.32	0.037
τ_0.33	0.329
τ_0.34	0.646
τ_0.35	0.812
τ_0.36	0.897
τ_0.37	0.94
τ_0.38	0.96
τ_0.39	0.971
τ_0.4	0.98
τ_0.42	0.985
τ_0.44	0.988
τ_0.46	0.99
τ_0.48	0.991
τ_0.5	0.994
τ_0.55	0.995
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.997
τ_1.5	0.992
τ₂	0.971

transmittance: 25 mm
τ_0.33	0.062
τ_0.34	0.336
τ_0.35	0.595
τ_0.36	0.762
τ_0.37	0.857
τ_0.38	0.903
τ_0.39	0.93
τ_0.4	0.95
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.978
τ_0.5	0.985
τ_0.55	0.989
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.992
τ_1.5	0.982
τ₂	0.93

Poisson coef.: 0.25
Rigidity: 298 Pa*10⁸
Young module: 746 Pa*10⁸
Knoop hardness: 620
Abrasion: 150

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	81