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Technical Papers Topics: High Purity Germanium Detector Applications and Technology DevelopmentsNon-LN2 Cooling of HPGe Detectors Nuclear Safeguards ApplicationsDigital Gamma-Ray Spectroscopy Systems General Gamma SpectrometryHomeland Security Applications and Chemical Weapons Assay (PINS) Connectivity for Spectrometry Systems Waste Assay On-Line Spectrometry SystemsTime Spectrometry and Timing Applications MiscellaneousHigh Purity Germanium Detector Applications and Technology Developments Performance of a Low-Background High Purity Germanium Detector with a Novel EndCapRonald M. Keyser, Timothy R. Twomey, and David Gunter, ORTEC (INMM July 2006)
Extended Source
Sensitvity and Resolution Comparisons of Serveral HPGe Detector
Types with Low-Energy Capabilities R.M. Keyser and T.R. Twomey, ORTEC (Presented at MTAA-11, June 2004)
The Best Choice of High Purity
Germanium (HPGe) Detector R.M. Keyser, ORTEC (Presented at IEEE NSS Oct. 2003)
Efficiency of Germanium Detectors as a Function of Energy and
Incident Geometry:
Comparison of Measurements and Calculations
Efficiency
and Resolution of Germanium Detectors as a
Function of Energy and Incident Geometry R.M. Keyser, ORTEC (International Radiochemical Analysis Conference, Maidstone, Kent, UK, Sept. 2002)
The Shape of the Full-Energy
Gamma Ray Peak in Germanium Detectors for Different Energies and
Incident Geometries R.M. Keyser, ORTEC (Presented at IRRMA meeting, June 2002, Bologna, Italy)
Using the IEC
Standard to Describe Low-Background Detectors - What May One Expect? Dr. R.D. Vis (1996)
Advances in
Large-Diameter, Low-Energy HPGe Detectors R.M. Keyser, T.R. Twomey, and S.E. Wagner, EG&G ORTEC (1990)
Radiation
Damage Resistance of Reverse Electrode Ge Coaxial Detectors R.M. Keyser, EG&G ORTEC
Performance
of a Gamma-Ray and X-Ray Spectrometer Utilizing Germanium and Si(Li) Detectors Cooled by a
Closed-Cycle Cryogenic Mechanical Refrigerator Non-LN2 Cooling of HPGe Detectors Improvements of Spectral Resolution in the Presence of Periodic Noise and Microphonics for Hyper Pure Germanium Detector Gamma Spectrometry Using a New Digital FilterM. Schultz, R. Keyser, R. Trammell, and D. Upp, ORTEC (Presented at MTAA-11, June 2004)
Performance of
Light-Weight, Battery-Operated, High Purity Germanium Detectors for Field
Use
New Cooling Methods for HPGe Detectors and Associated Electronics
Performance of
a New Type of Electrical Cooler for HPGe Detector Systems
A New Cooler
for HPGe Detector Systems Nuclear Safeguards Applications
The Use of FRAM
with a Portable, HPGe-Based Nuclide Identifier to Measure the Isotopic
Composition of Plutonium and Uranium T.R. Twomey, R.M. Keyser, ORTEC; D.T. Vo, LANL (JRC Workshop Nov. 2005)
FRAM's Isotopic
Uncertainty Analysis Thomas E. Sampson, Thomas A. Kelley, and Duc T. Vo, LANL (LA-14018 Issued Sept. 2003)
Using the Nuclide Report Function to
Perform Enrichment Estimates with the ORTEC digiDART R. Bingham, R. Keyser, and T. Twomey, PerkinElmer Instruments-ORTEC (INMM 2001) Authentication
and Data Quality Monitoring with Safeguards HPGe Detector Systems
Full
Range MGA Plutonium Isotopic Analysis Using Single Ge Detector
New Shift-Register Electronics for Improved
Precision of Neutron Coincidence and Multiplicity Assays of Plutonium and Uranium Mass
Test
and Evaluation of the FRAM Isotopic Analysis Code for EURATOM Applications Digital Gamma-Ray Spectroscopy Systems Improved Performance in Germanium Detector Gamma Spectrometers Based on Digital Signal ProcessingR.M. Keyser, R.D. Bingham, and T.R. Twomey, ORTEC (April 2006)
Improved Performance in
Germanium Detector Gamma Spectrometers Based on Digital Signal Processing Harold Wheat, Jr. Y-12 National Security Complex, Oak Ridge, TN (INMM 2003)
Loss Free Counting with Uncertainty
Analysis Using ORTEC's Innovative Zero Dead Time Technique D.T. Vo, P.A. Russo, Los Alamos National Lab (LA-13895-MS, Issued Feb. 2002)
A
Plausible Mathematical Interpretation of the 'Variance' Spectra Obtained with the DSPEC
Plus Digital Spectrometer
Analysis
of Long-Lived Isotopes in the Presence of Short-Lived Isotopes Using Zero Dead Time
Correction R. Keyser, T. Twomey, and R. Bingham, PerkinElmer Instruments-ORTEC (ANS 2001) A New Method for
Counting Loss Correction with Uncertainty in Gamma Spectroscopy Applications
An
Innovative, Portable MCA Based on Digital Signal Processing
A Digital
Method for Dead Time Compensation in Nuclear Spectroscopy D. Upp, R. Keyser, D. Gedcke, T. Twomey, and R. Bingham, PerkinElmer Instruments-ORTEC (2000)
Comparisons
of the DSPEC and DSPEC Plus Spectrometer Systems D.T. Vo, P.A. Russo, and T.E. Sampson (March 1998) Evaluating
the Commercial Spectrometer Systems for Safeguards Applications Using Germanium Detectors General Gamma Spectrometry Performance of an Enhanced Throughput Feature in a High-Count-Rate SystemRonald M. Keyser and Rex C. Trammell, ORTEC (2004 IEEE)
High-Count-Rate
Spectroscopy with Ge Detectors: Quantitative Evaluation of the Performance of High-Rate
Systems M.L. Simpson, T.W. Raudord, T.J. Paulus, R.C. Trammell, EG&G ORTEC (1989 IEEE) High-Rate and
High-Energy Gamma-Ray Spectroscopy using Charge Trapping and Ballistic Deficit Correction
Circuits F.S. Goulding and D.A. Landis, Lawrence Berkeley Laboratory (IEEE Transactions on Nuclear Science, Vol. 35, No. 1, February 1988)
Effect of
Charge Carrier Trapping on Germanium Coaxial Detector Line Shapes Homeland Security Applications and Chemical Weapons Assay (PINS) Characteristics and Performance of an Integrated Portable High Efficiency Neutron Multiplicity Counter for Detection of Illicit Neutron SourcesTimothy R. Twomey and Ronald M. Keyser, ORTEC (INMM July 2007)
Background Reduction Using Collimators on a Portable HPGe Nuclide
Identifier Characteristics of an Integrated
Gamma-Ray Spectrometer Using Germanium Detectors in Fixed and Mobile
Measurement Systems Characteristics of an Integrated Germanium
Detector Based Gamma-Ray Spectrometer for Monitoring Systems Non-Destructive Identification of Chemical
Warfare Agents and Explosives by Neutron Generator-Driven PGNAA
Performance of an
Improved HPGe-Based Radioisotope Identifier (RIID) in the Identification of
SNM and SNM Mixtures
Minimum Detectable
Activity Estimates for a Germanium-Detector Based Spectroscopic Portal
Monitor S. Hitch, R. Keyser, J. Smalling, and T. Twomey, ORTEC (May 2006) White Paper
Germanium Detection Search Systems to Locate Special Nuclear
Material or Improvised Nuclear Weapons
Enhanced Standoff Detection Capability for
SNM Using High Purity Germanium Detector-Based Instrumentation
Comparison of MCNP
and Experimental Measurements for an HPGe-based Spectroscopy Portal Monitor
The HML's New Field Deployable, High-Resolution Whole Body
Counter R.M. Keyser, D.L. Upp, T.R. Twomey, ORTEC (Presented at INMM, July 2005)
A Comparison of an
HPGe-based and NaI-based Radionuclide Identifier (RID) for Radioactive
Materials R.M. Keyser, T.R. Twomey, and D.L. Upp, ORTEC (Presented at HPS Midyear, Feb. 2005)
New Technology Gives Bomb
Squads the Upper Hand in the Fight Against Radiological or Nuclear Terrorism T.R. Twomey and R.M. Keyser, ORTEC (Presented at World Customs Organization Conference, Sept. 2004)
Performance of a
Portable HPGe-Based Nuclide Identifier on Multiple Nuclide Mixtures D.L. Upp and R.M. Keyser, ORTEC (Presented at INMM, July 2004)
High Resolution
Detection Systems for Interdiction of Nuclear Material Trafficking
Applications
of Gamma Spectrometric Techniques with Plastic Scintillators for the
Suppression of "Innocent Alarms" in Border Monitoring for Nuclear and other
Radioactive Materials
Evaluation of
Handheld Isotope Identifiers
Evaluation of
Commercial Detectors R. Keyser, T. Twomey, D. Upp, ORTEC (Presented at INMM, July 2003)
New Cooling Methods for HPGe Detectors and Associated Electronics A.J. Caffrey, J.D. Cole, R.J. Gehrke, and R.C. Greenwood, Idaho National Engineering Laboratory (1991) Connectivity for Spectrometry Systems
Networks
and Connections in the Counting Room Advances in Analysis Software Performance of the True Coincidence Correction Method in GammaVisionR. Keyser, S. Haywood, and D. Upp, PerkinElmer Instruments-ORTEC (ANS 2001)
Deconvolution
of Gamma-Ray Peak Doublets as a Function of Peak Separation and Relative Amplitude Waste Assay New Algorithms for the Analysis of Waste CharacterizationXiaoqin J. Guo and Richard C. Hagenauer, ORTEC (INMM July 2007)
Measurement of PDP Drums
Evaluate Program Isotopic
Performance of a
Portable, Electromechanically-Cooled HPGe Detector for Site Characterization Rich Hagenauer, ORTEC - Feb. 2006
Comparison
of Gamma-Ray Nondestructive Assay Measurement Techniques Rich Hagenauer, ORTEC - Sept. 2004
Performance
of Transmission-Corrected High-Resolution Gamma Assays in a Nuclear Fuel
Fabrication Facility S.E. Smith (ORNL), K.A. Thompson (Y-12), J. Malcom and P.A. Russo (LANL) (2004)
Evaluation of Program Isotopic to Nondestructively
Quantify Uranium and Plutonium Samples at the Joint Research Center in
Ispra, Italy R. Keyser, T. Twomey, R. Hagenauer, ORTEC (Presented at ESARDA, May 2003)
A
Portable HPGe System for Measuring Contaminated Soils and Floors
Practical
Solutions to Radioactive Waste Characterization
An
Intercomparison of In Situ Gamma-Ray Spectrometers I.K. Helfer and K.M. Miller, EML (1988) Counting Laboratories
Analysis of Am, Pu
and Th in Large Volume Water Samples in the Presence of High Concentrations of Iron T.J. Paulus, R.M. Keyser, EG&G ORTEC
Radiochemistry
Procedures On-Line Spectrometry Systems Performance Results for the Stability of the ORTEC DSPEC Digital Electronics in the Sentinel On-Line, Unattended Measurement ApplicationDaniel L. Upp, ORTEC. and Risto Sillanpaa, Teollisuuden Voima Oy (1998)
Fuel
INtegrity Evaluation and Surveillance System (FINESS) Time Spectrometry and Timing Applications Performance Characteristics of Eighteen Positron Lifetime SpectrometersT.J. Paulus, EG&G ORTEC (1991 - 9th International Conference on Positron Annihilation)
Timing
Electronics and Fast Timing Methods with Scintillation Detectors
Optimization
of a State-of-the-Art Positron Lifetime Measurement Apparatus Neutron-Gamma Discrimination with Stilbene and Liquid Scintillators EG&G ORTEC (1989) |
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