Unipolar charge sensing with coplanar electrodes -- Application to semiconductor detectors

Technical Report · Mon Oct 31 23:00:00 EST 1994

DOI:https://doi.org/10.2172/34411· OSTI ID:34411

Luke, P N ^[1]

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1. Lawrence Berkeley Lab., CA (United States). Engineering Div.

A novel method to perform preferential sensing of single-polarity charge carriers in ionization detectors is presented. It achieves the same function as Frisch grids commonly employed in gas ion chambers but uses a coplanar electrode configuration that allows it to be applied to semiconductor detectors. Through the use of this method, good energy resolution can be obtained from room-temperature compound semiconductor detectors despite their poor hole-collection characteristics. Experiment using a CdZnTe detector demonstrates the effectiveness of this technique. Schemes to correct for electron trapping and to obtain position information are also described.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 34411
• Report Number(s): LBL--36305; CONF-9411173--5; ON: DE95008441
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CADMIUM TELLURIDES
CHARGE CARRIERS
CHARGE COLLECTION
CHARGE TRANSPORT
DESIGN
ENERGY RESOLUTION
EXPERIMENTAL DATA
HOLES
SEMICONDUCTOR DETECTORS
SEMICONDUCTOR MATERIALS
SPECTRAL RESPONSE
ZINC TELLURIDES