CRATER - Compton Ratio Analysis for Testing Environmental Radioactivity Datasheet

CRATER™Compton Ratio Analysis for Testing Environmental Radioactivity? CRATER™ - Compton Ratio Analysis for Testing Environmental Radioactivity is a specialized radiation detection system, specifically developed for real-time screening of materials (e.g., excavated soils) for radioactive contamination. The system utilizes a methodology specifically developed for this application, which analyzes the spectral characteristics of the radionuclide(s) of concern using the Compton-to-photopeak ratio to quantify radioactivity. A background spectral stripping technique is added for enhanced detection under varying background conditions. ? Application of CRATER™ for large area soil remediation projects will improve operations by providing real-time screening of materials - reducing personnel exposures by minimizing hands-on surveys, and improving throughput to reduce resource costs. For information, contact J. Stewart Bland (410.266.9174; email: JSBland@chesnuc.com) RADIATION SAFETY ASSOCIATESCRATER™Specifications? Radiation Detectors? Low-Range Scintillation Detector? Make/Model: REXON NAI 1.0X1.0/1.12IV? Crystal Type: NaI(Tl)? Crystal Diameter: 1”? Crystal Length: 1”? Resolution: 7.71% @ 662 keV? Enclosure Length: 9.5” (excluding jack)? Enclosure Width: 1.375”? Useful Spectroscopic Range: < 20 mR/h? High-Range Scintillation Detector? Make/Model: REXON NAI 0.25X1.0/1.12IV? Crystal Type: NaI(Tl)? Crystal Diameter: 0.25”? Crystal Length: 1”? Resolution: 7.51% @ 662 keV? Enclosure Length: 9.5” (excluding jack)? Enclosure Width: 1.375”? Useful Spectroscopic Range: < 200 mR/h? Exposure Rate Detector? Make and Model: LND 7149? Type: Energy Compensated Geiger-Mueller? Effective Length: 0.63”? Maximum Diameter: 0.38”? Minimum Dead Time: 15 µsec? Gamma Sensitivity: 1.5 cps-per-mR/h Co-60? Multi-Channel Analyzers (two, one for each NaI detector)? Make and Model: customized Radiation Alert® URSA-II? Maximum Resolution: 256 channels, customized? HV Supply: Variable, to +2000VDC @ 0.5mA? Gain: Variable, to X250? Shaping Time: Adjustable, 0.25 to 10 µsec? Power? Input Voltage Range: 9 to 36VDC? Maximum Current: 3A? Control/Display Unit? Make and Model: TDS Recon? Operating System: Windows Mobile 6? Processor: 400MHz Intel PXA255 XScale Processor? Memory: 64 MB high-speed SDRAM? Storage: 256 MB nonvolatile Flash storage? Communication? Protocol: RS232, 115200 baud, 8,N,1? Link: Bluetooth™, FCC-Compliant, Dipole AntennaandRADIATION SAFETY ASSOCIATESJ. Stewart Bland (410.266.9174) email: JSBland@chesnuc.com CRATER™?Compton Ratio Analysis for Testing ?Environmental Radioactivity CRATER™?Specifications