Physics-based generation of gamma-ray response functions for CDZNTE detectors

Technical Report · Mon Sep 01 00:00:00 EDT 1997

DOI:https://doi.org/10.2172/527538· OSTI ID:527538

Prettyman, T H; Mercer, D J; Cooper, C; Russo, P A; Rawool-Sullivan, M; Close, D A ^[1]; Luke, P N; Amman, M ^[2]; Soldner, S ^[3]

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1. Los Alamos National Lab., NM (United States)
2. Lawrence Berkeley National Lab., CA (United States)
3. eV Products (United States)

A physics-based approach to gamma-ray response-function generation is presented in which the response of CdZnTe detectors is modeled from first principles. Computer modeling is used to generate response functions needed for spectrum analysis for general detector configurations (e.g., electrode design, detector materials and geometry, and operating conditions). With computer modeling, requirements for calibration and characterization are significantly reduced. Elements of the physics-based model, including gamma-ray transport, charge drift-diffusion, and circuit response, are presented. Calculated and experimental gamma-ray spectra are compared for a coplanar-grid CdZnTe detector.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 527538
• Report Number(s): LA-UR-97-1800; CONF-970424-17; ON: DE97008756; TRN: 97:018531
• Resource Relation: Conference: 4. international conference on methods and applications of radioanalytical chemistry, Kona, HI (United States), 6-11 Apr 1997; Other Information: PBD: [1997]
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
GAMMA SPECTROMETERS
SEMICONDUCTOR DETECTORS
RESPONSE FUNCTIONS
COMPUTERIZED SIMULATION
GAMMA SPECTRA
CADMIUM TELLURIDES
ZINC TELLURIDES
THEORETICAL DATA