<s>
A	O
spark	B-Algorithm
chamber	I-Algorithm
is	O
a	O
particle	B-Algorithm
detector	I-Algorithm
:	O
a	O
device	O
used	O
in	O
particle	O
physics	O
for	O
detecting	O
electrically	O
charged	O
particles	O
.	O
</s>
<s>
They	O
were	O
most	O
widely	O
used	O
as	O
research	O
tools	O
from	O
the	O
1930s	O
to	O
the	O
1960s	O
and	O
have	O
since	O
been	O
superseded	O
by	O
other	O
technologies	O
such	O
as	O
drift	O
chambers	O
and	O
silicon	B-Algorithm
detectors	I-Algorithm
.	O
</s>
<s>
Today	O
,	O
working	O
spark	B-Algorithm
chambers	I-Algorithm
are	O
mostly	O
found	O
in	O
science	O
museums	O
and	O
educational	O
organisations	O
,	O
where	O
they	O
are	O
used	O
to	O
demonstrate	O
aspects	O
of	O
particle	O
physics	O
and	O
astrophysics	O
.	O
</s>
<s>
Spark	B-Algorithm
chambers	I-Algorithm
consist	O
of	O
a	O
stack	O
of	O
metal	O
plates	O
placed	O
in	O
a	O
sealed	O
box	O
filled	O
with	O
a	O
gas	O
such	O
as	O
helium	O
,	O
neon	B-Application
or	O
a	O
mixture	O
of	O
the	O
two	O
.	O
</s>
<s>
As	O
research	O
devices	O
,	O
spark	B-Algorithm
chamber	I-Algorithm
detectors	O
have	O
lower	O
resolution	O
than	O
bubble	B-Algorithm
chamber	I-Algorithm
detectors	O
.	O
</s>
<s>
A	O
streamer	B-Algorithm
chamber	I-Algorithm
is	O
a	O
type	O
of	O
detector	O
closely	O
related	O
to	O
the	O
spark	B-Algorithm
chamber	I-Algorithm
.	O
</s>
<s>
In	O
a	O
spark	B-Algorithm
chamber	I-Algorithm
one	O
looks	O
at	O
a	O
stack	O
of	O
parallel	O
plates	O
edge-on	O
.	O
</s>
<s>
A	O
streamer	B-Algorithm
chamber	I-Algorithm
,	O
in	O
contrast	O
,	O
typically	O
has	O
only	O
two	O
plates	O
,	O
at	O
least	O
one	O
of	O
which	O
is	O
transparent	O
(	O
e.g.	O
</s>
<s>
A	O
much	O
shorter	O
high-voltage	O
pulse	O
is	O
used	O
than	O
with	O
a	O
spark	B-Algorithm
chamber	I-Algorithm
,	O
so	O
there	O
is	O
insufficient	O
time	O
for	O
sparks	O
to	O
form	O
.	O
</s>
