# Optical constants for silicon-germanium (20% Ge) by PTB
# created 2023-05-30 07:52:52.873395
# Reconstructed from reflection measurements in the photon energy range 80 - 250 eV
# n = (1-delta) - (i*beta)
# 
# Citation: Ciesielski, R., Bogdanowicz, J., Loo, R., Shimura, Y., Mani, A., Mitterbauer, C., ... & Soltwisch, V. (2024). Interface sharpness in stacked thin film structures: a comparison of soft X-ray reflectometry and transmission electron microscopy. Journal of Micro/Nanopatterning, Materials, and Metrology, 23(4), 041405-041405.
#
# energy/eV, 1-delta, beta
# -------------------------
80.01	0.99078	0.00863
82.01	0.99226	0.00848
84.01	0.99349	0.00872
86.01	0.99445	0.00882
88.01	0.99533	0.00865
90.01	0.99635	0.00841
92.01	0.99754	0.00815
94.01	0.99895	0.00781
96.01	1.00037	0.0073
98.01	1.00325	0.0068
100.01	1.0127	0.01107
102.01	1.00071	0.01564
104.01	1.00273	0.01394
106.01	1.00444	0.01443
108.01	1.00348	0.01616
110.01	1.00308	0.01689
112.01	1.00268	0.01766
114.01	1.00247	0.01808
116.01	1.00218	0.01927
118.02	1.00129	0.02043
120.02	1.00013	0.02069
122.02	0.99964	0.02118
124.02	0.99837	0.02113
126.02	0.99761	0.02083
128.02	0.99683	0.02064
130.02	0.99617	0.02039
132.02	0.99527	0.02008
134.02	0.99444	0.0194
136.02	0.99396	0.01843
138.02	0.99393	0.01782
140.02	0.99388	0.01734
142.02	0.99373	0.01693
144.02	0.99379	0.01677
146.02	0.99358	0.01661
148.02	0.99332	0.0162
150.02	0.99329	0.01572
152.02	0.99323	0.01594
154.02	0.9927	0.01528
156.02	0.99289	0.0149
158.02	0.99293	0.01473
160.02	0.99277	0.01456
162.02	0.99264	0.01441
164.02	0.99241	0.01419
166.02	0.99216	0.01392
168.02	0.99196	0.01366
170.02	0.99163	0.01335
172.02	0.99139	0.01278
174.02	0.9913	0.01229
176.02	0.99138	0.01185
178.02	0.99155	0.01151
180.02	0.99166	0.01119
182.02	0.99175	0.01102
184.02	0.99179	0.01087
186.02	0.99182	0.01065
188.02	0.99181	0.01039
190.02	0.99178	0.01005
192.02	0.99179	0.00972
194.02	0.99185	0.00941
196.02	0.99187	0.00914
198.03	0.9919	0.00893
200.03	0.99197	0.00865
202.03	0.99206	0.00837
204.03	0.99215	0.00816
206.03	0.99224	0.00796
208.03	0.99235	0.00782
210.03	0.99244	0.00768
212.03	0.99251	0.00754
214.03	0.99255	0.00737
216.03	0.99258	0.00716
218.03	0.99263	0.00698
220.03	0.99268	0.00681
222.03	0.99273	0.00665
224.03	0.9928	0.00649
226.03	0.99286	0.00633
228.03	0.99291	0.00615
230.03	0.99298	0.00599
232.03	0.99304	0.00585
234.03	0.99314	0.00574
236.03	0.99321	0.00565
238.03	0.99328	0.00554
240.03	0.99333	0.00542
242.03	0.99338	0.00532
244.03	0.99345	0.00522
246.03	0.99351	0.00512
248.03	0.99357	0.00506
250.03	0.99362	0.00498