F9 - GOST Rus

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.613849 n_e = 1.618044	V_d = 34.59 V_e = 34.31	n_F - n_C = 0.017745 n_F' - n_C' = 0.018008

Type: Resnik
Spectral range: 0.36501 - 2.6 mkm.
C1 = 0.028 C2 = 1.61731 C3 = 0.0351281 C4 = -0.0100445 C5 = 0.00113065 C6 = -0.000463256 C7 = 0.000715115 C8 = 0 C9 = 0 C10 = 0 C11 = 0

Refraction index
n _2.3254	1.576770
n _1.9701	1.582101
n _1.5296	1.588024
n _1.06	1.595108
n _t	1.596025
n _s	1.600082
n _r	1.605814
n _C	1.608669
n _C'	1.609481
n _0.6328	1.610243
n _D	1.613695
n _d	1.613849
n _e	1.618044
n _F	1.626415
n _F'	1.627489
n _g	1.636978
n _h	1.646340
n _i	1.663862
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7125
P_C,A'	0.3181
P_d,C	0.2918
P_e,C	0.5282
P_g,d	1.3033
P_g,F	0.5952
P_h,g	0.5275
P_i,g	1.5149
P_C',t	0.7582
P_e,C'	0.4825
P_F',e	0.5322
P_i,F'	2.0496

Density: 2.93 g/cm³
Poisson coef.: 0.247
Rigidity: 263.6 Pa*10⁸
Young module: 657.6 Pa*10⁸
Optical stress coef.: 3.16 1/Pa*10¹²
Abrasion: 0.5

Climatic resistance: А
Resistance to acids: I

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-60 ~ 20	90
0 ~ 30	92
20 ~ 120	96
20 ~ 300	101

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-60 ~ 20	F	-1.1
-60 ~ 20	e	-1.8
-60 ~ 20	D	-2.2
-60 ~ 20	C	-2.5
20 ~ 120	F	0.4
20 ~ 120	e	-0.4
20 ~ 120	D	-0.9
20 ~ 120	C	-1.1