K-BaSF4 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.651279 n_e = 1.655310	V_d = 38.32 V_e = 38.05	n_F - n_C = 0.016992 n_F' - n_C' = 0.017218	Coloring: 0.35 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.665818813475 C2 = -0.01522270640271 C3 = 0.01713804159954 C4 = 0.002616529436636 C5 = -0.0002759285894172 C6 = 0.00001803572345693

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.633729
n _s	1.637887
n _r	1.643510
n _C	1.646277
n _C'	1.647062
n _0.6328	1.647799
n _D	1.651130
n _d	1.651279
n _e	1.655310
n _F	1.663269
n _F'	1.664280
n _g	1.673099
n _h	1.681610
n _i	1.697169
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7384
P_C,A'	0.3228
P_d,C	0.2943
P_e,C	0.5315
P_g,d	1.2841
P_g,F	0.5784
P_h,g	0.5008
P_i,g	1.4165
P_C',t	0.7846
P_e,C'	0.4853
P_F',e	0.5279
P_i,F'	1.9355

transmittance: 10 mm
τ_0.34	0.001
τ_0.35	0.103
τ_0.36	0.464
τ_0.37	0.738
τ_0.38	0.86
τ_0.39	0.919
τ_0.4	0.948
τ_0.42	0.971
τ_0.44	0.981
τ_0.46	0.985
τ_0.48	0.989
τ_0.5	0.992
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.983

transmittance: 25 mm
τ_0.35	0.003
τ_0.36	0.146
τ_0.37	0.468
τ_0.38	0.687
τ_0.39	0.81
τ_0.4	0.876
τ_0.42	0.931
τ_0.44	0.953
τ_0.46	0.964
τ_0.48	0.974
τ_0.5	0.981
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_1.06	0.997
τ_1.5	0.997
τ₂	0.96

Poisson coef.: 0.223
Rigidity: 362 Pa*10⁸
Young module: 887 Pa*10⁸
Knoop hardness: 586
Abrasion: 154

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	92