The
Chipmunk is a three terminal 3.4 liter ionization chamber designed
for measuring low levels of radiation.
It consists of a bakelite and polystyrene chamber housed inside
of an aluminum housing. The housing provides an external gas tight
seal. The center electrode is large for use in pulsed fields. Specifications Ionization
Chamber: Sealed, 3422 cc Wall Materials:
0.125” thick bakelite walls and high impact polystyrene end
plates; 0.049 Al outside wall Central Electrode:
2” dia 0.063 wall Signal Connector:
0.080 dia feedthrough High Voltage
Connector: 0.080 dia feedthrough Signal Output:
2.3 x 10E -9 C/mrad Leakage:
less than 10 fA at 1700V High Voltage
Requirements: positive or negative polarity 300V to 1000 V, nominally
800V. Calibration
furnished: C/mR. Ra226 Overall Size
and Weight: length including pinch off tube and connectors:mf 13.0
inches; 6 in Dia.
Ionization
Chamber: Sealed, 3422 cc