Ionization detector, electrode configuration and single polarity charge detection method

Patent · Tue Jul 07 04:00:00 EDT 1998

OSTI ID:672593

He, Z

An ionization detector, an electrode configuration and a single polarity charge detection method each utilize a boundary electrode which symmetrically surrounds first and second central interlaced and symmetrical electrodes. All of the electrodes are held at a voltage potential of a first polarity type. The first central electrode is held at a higher potential than the second central or boundary electrodes. By forming the first and second central electrodes in a substantially interlaced and symmetrical pattern and forming the boundary electrode symmetrically about the first and second central electrodes, signals generated by charge carriers are substantially of equal strength with respect to both of the central electrodes. The only significant difference in measured signal strength occurs when the charge carriers move to within close proximity of the first central electrode and are received at the first central electrode. The measured signals are then subtracted and compared to quantitatively measure the magnitude of the charge. 10 figs.

• Research Organization: University of Michigan
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG08-94NV11630
• Assignee: Univ. of Michigan, Ann Arbor, MI (United States)
• Patent Number(s): US 5,777,338/A/
• Application Number: PAN: 8-763,675
• OSTI ID: 672593
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CHARGE CARRIERS
DESIGN
ELECTRIC POTENTIAL
ELECTRODES
IONIZATION CHAMBERS