Fluke Biomedical TNT 12000 - Manual (Page 103)

B-1
Appendix B
Model 96035B Ion Chamber
Introduction
The Model 96035B dual entrance window parallel-plate ion chamber has a flat response
suitable for both diagnostic radiography and mammography. One entrance window is
provided for diagnostic measurements and one for mammographic measurements. The
fully guarded, centrally located collector plate provides excellent collection efficiency.
This appendix provides complete physical, electrical, and energy response specifications .
Physical Specifications
2.86 cm
0.71 cm
1.30 cm
Body Center
Line
Direction
of incident
radiation for
diagnostic
measurements
3.96 cm
Active Region
Center Line
Active Region
6.35 cm
DIAGNOSTIC
FOCUS
DIAGNOSTIC
FOCUS
fct29.eps
Figure B-1. Model 96035B Ion Chamber Dimensions
Description ............................................................ Vented volume, parallel-plate air ionization chamber
Overall Dimensions .............................................. 6.35
± 0.04 cm diameter by 1.30 ± 0.01 cm thick
Nominal Volume.................................................... 15 cc, 3.96 cm diameter by 1.22 cm thick active volume
Wall Material .......................................................... Graphite-coated acrylic