inDeX of refraction of gaSeS

This table gives the index of refraction of several gases at se-

lected wavelengths ranging from the blue to the red region of the

spectrum . The entries at 0 .5893 μm correspond to the prominent

sodium D line in the yellow region . All values refer to gas at a

pressure of one atmosphere (101 .325 kPa) and at a temperature

of 0°C .

references

1 . Gray, D . E ., ed ., American Institute of Physics Handbook, 3rd Edition,

p . 6-110, McGraw-Hill, New York, 1972 .

2 . Forsythe, W . E ., Smithsonian Physical Tables, Ninth Edition, p . 533,

Smithsonian Institution, Washington, 1954 .

3 . Kaye and Laby Tables of Physical and Chemical Constants, Sixteenth

Edition, p . 131, Longman Group Ltd ., Harlow, Essex, 1995 .

Gas

Wavelength

0.4360 μm 0.4861 μm 0.5461 μm 0.5790 μm 0.5893 μm 0.6563 μm 0.6709 μm

Air

1 .0002966 1 .0002947 1 .0002932 1 .0002926 1 .0002924 1 .0002915 1 .0002913

Ar

1 .000281

CH

4

1 .000444

Cl

2

1 .000773

CO

2

1 .0004563

1 .0004506

1 .0004493

1 .0004471

H

2

1 .0001418 1 .0001406 1 .0001397 1 .0001393 1 .0001392 1 .0001387 1 .0001385

He

1 .000036

N

2

1 .0003012 1 .0002998

1 .0002990 1 .0002982

N

2

O

1 .000516

NO

1 .000297

O

2

1 .0002743 1 .0002734 1 .0002717 1 .0002710 1 .0002709 1 .0002698 1 .0002683

SO

2

1 .000686

10-254

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