BaF8 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.623742 n_e = 1.626891	V_d = 47.09 V_e = 46.79	n_F - n_C = 0.013244 n_F' - n_C' = 0.013395	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5825322 C2 = -0.0093209785 C3 = 0.018295063 C4 = 0.00052732239 C5 = -0.000014104414 C6 = 0.0000021483623

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.609729
n _s	1.613050
n _r	1.617580
n _C	1.619791
n _C'	1.620415
n _0.6328	1.620999
n _D	1.623626
n _d	1.623742
n _e	1.626891
n _F	1.633035
n _F'	1.633810
n _g	1.640513
n _h	1.646868
n _i	1.658060
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7596
P_C,A'	0.3320
P_d,C	0.2983
P_e,C	0.5360
P_g,d	1.2662
P_g,F	0.5645
P_h,g	0.4798
P_i,g	1.3248
P_C',t	0.8067
P_e,C'	0.4889
P_F',e	0.5224
P_i,F'	1.8309

transmittance: 10 mm
τ_0.32	0.015
τ_0.33	0.27
τ_0.34	0.629
τ_0.35	0.822
τ_0.36	0.908
τ_0.37	0.943
τ_0.38	0.963
τ_0.39	0.974
τ_0.4	0.981
τ_0.42	0.985
τ_0.44	0.988
τ_0.46	0.99
τ_0.48	0.991
τ_0.5	0.991
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.988
τ_1.5	0.982
τ₂	0.957

transmittance: 25 mm
τ_0.33	0.037
τ_0.34	0.313
τ_0.35	0.613
τ_0.36	0.786
τ_0.37	0.864
τ_0.38	0.91
τ_0.39	0.937
τ_0.4	0.954
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.978
τ_0.5	0.978
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.971
τ_1.5	0.957
τ₂	0.896

Poisson coef.: 0.256
Rigidity: 292 Pa*10⁸
Young module: 734 Pa*10⁸
Knoop hardness: 477
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	82