<s>
The	O
ARSA	O
system	O
continuously	O
collects	O
xenon	B-Protocol
from	O
the	O
air	O
in	O
batch	O
mode	O
,	O
processing	O
approximately	O
48	O
m3	O
in	O
an	O
8-hour	O
period	O
.	O
</s>
<s>
The	O
average	O
amount	O
of	O
xenon	B-Protocol
collected	O
in	O
this	O
period	O
is	O
approximately	O
2	O
cc	O
.	O
</s>
<s>
The	O
xenon	B-Protocol
gas	O
is	O
then	O
transferred	O
into	O
nuclear	O
detection	O
system	O
consisting	O
of	O
a	O
beta	O
–	O
gamma	O
coincidence	O
spectrometer	O
.	O
</s>
<s>
Monitoring	O
stations	O
separate	O
xenon	B-Protocol
from	O
air	O
and	O
perform	O
isotopic	O
analysis	O
of	O
the	O
radioxenon	O
.	O
</s>
<s>
The	O
β	O
spectrometer	O
is	O
a	O
plastic	O
scintillator	O
,	O
manufactured	O
as	O
a	O
cylindrical	O
cell	O
containing	O
the	O
separated	O
xenon	B-Protocol
sample	O
.	O
</s>
