An optical system which makes it possible to obtain reflectance spectra of solids in the range of hydrostatic pressures 0–70 kilobar and higher is described. The system is used in conjunction with a diamond anvil pressure cell, and has a spectral range of 0.6–4.5 eV. An example is furnished illustrating its use in an investigation of the shift with pressure of the plasma reflectance edge of TTF‐TCNQ.

1.
G. J.
Piermarini
and
S.
Block
,
Rev. Sci. Instrum.
46
,
973
(
1975
). This contains references to earlier papers by the NBS group and others on the diamond anvil cell.
2.
G. J.
Piermarini
,
S.
Block
,
J. D.
Barnett
, and
R. A.
Forman
,
J. Appl. Phys.
46
,
2774
(
1975
).
3.
B. A.
Weinstein
and
G. J.
Piermarini
,
Phys. Rev. B
12
,
1172
(
1975
).
4.
R. S.
Hawke
,
K.
Syassen
, and
W. B.
Holzapfel
,
Rev. Sci. Instrum.
45
,
1598
(
1974
).
5.
B.
Welber
,
M.
Cardona
,
C. K.
Kim
, and
S.
Rodriquez
,
Phys. Rev. B
12
,
5729
(
1975
).
6.
B.
Welber
,
Rev. Sci. Instrum.
47
,
183
(
1976
).
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