<s>
In	O
physics	O
,	O
optically	B-Algorithm
stimulated	I-Algorithm
luminescence	I-Algorithm
(	O
OSL	O
)	O
is	O
a	O
method	O
for	O
measuring	O
doses	O
from	O
ionizing	O
radiation	O
.	O
</s>
<s>
The	O
method	O
makes	O
use	O
of	O
electrons	O
trapped	O
between	O
the	O
valence	O
and	O
conduction	O
bands	O
in	O
the	O
crystalline	O
structure	O
of	O
certain	O
minerals	O
(	O
most	O
commonly	O
quartz	B-General_Concept
and	O
feldspar	O
)	O
.	O
</s>
<s>
The	O
photons	B-Application
are	O
detected	O
using	O
a	O
photomultiplier	O
tube	O
.	O
</s>
<s>
The	O
OSL	O
dosimeter	O
provides	O
a	O
new	O
degree	O
of	O
sensitivity	O
by	O
giving	O
an	O
accurate	O
reading	O
as	O
low	O
as	O
1	O
mrem	O
for	O
x-ray	O
and	O
gamma	O
ray	O
photons	B-Application
with	O
energies	O
ranging	O
from	O
5	O
keV	O
to	O
greater	O
than	O
40	O
MeV	O
.	O
</s>
<s>
The	O
OSL	O
dosimeter	O
's	O
maximum	O
equivalent	O
dose	O
measurement	O
for	O
x-ray	O
and	O
gamma	O
ray	O
photons	B-Application
is	O
1000	O
rem	O
.	O
</s>
