Digital Gamma Ray Spectroscopy Systems

Optimization of Pulse Processing Parameters for HPGe Gamma-ray Spectroscopy Systems Used in Extreme Count Rate Conditions and Wide Count Rate Ranges
R.M. Keyser and T.R. Twomey, ORTEC (MARC Conference March 2012) (Journal of Radioanalytical and Nuclear Chemistry: Volume 296, Issue 1 (2013), Page 503-508)

Improved Performance in Germanium Detector Gamma Spectrometers based on Digital Signal Processing
R.M. Keyser, R.D. Bingham, and T.R. Twomey, ORTEC (April 2006)

Improved Performance in Germanium Detector Gamma Spectrometers based on Digital Signal Processing
R. Keyser, T. Twomey, and R. Bingham, ORTEC (ANS, Nov. 2004)

Using the Nuclide Report Function to Perform Enrichment Estimates with the ORTEC digiDART
Harold Wheat, Jr. Y-12 National Security Complex, Oak Ridge, TN (INMM 2003)

Loss Free Counting with Uncertainty Analysis Using Innovative Zero Dead Time Technique
The ORTEC loss free counting method with estimation of the uncertainty associated with the collected data is accurate for rapidly changing count rate applications. (June 2002)

Comparisons of the Portable Digital Spectrometer Systems
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 Spectrometers
Pomme, Institute for Reference Materials and Measurement, Belgium (Reprinted from Nuclear Instruments and Methods in Physics Research A 482 (2002) 565-566 with permission from Elsevier Science)

Analysis of Long-lived Isotopes in the Presence of Short-lived Isotopes Using Zero Dead Time Correction
R. Keyser, T. Twomey, and D. Upp, PerkinElmer Instruments-ORTEC, and R. Sillanpaa, Teollisuuden Voima Oy (IEEE November 2001)

Performance of the Zero-Dead-Time Mode of the DSPEC Plus
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
D. Gedcke, R. Keyser, and T. Twomey, PerkinElmer Instruments-ORTEC (INMM 2001)

An Innovative, Portable MCA based on Digital Signal Processing
R. Bingham, R. Keyser, and T. Twomey, PerkinElmer Instruments-ORTEC (Presented at the 23rd Brugge ESARDA meeting on Safeguards and Nuclear Materials Management, May 2001)

A Digital Method for Dead Time Compensation in Nuclear Spectroscopy
R. Keyser, D. Gedcke, D. Upp, T. Twomey, and R. Bingham, PerkinElmer Instruments-ORTEC (Presented at the 23rd Brugge ESARDA meeting on Safeguards and Nuclear Materials Management, May 2001)

An Innovative Method for Dead Time Correction 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
Duc T. Vo (Nov. 1999)

Comparisons Between Digital Gamma Ray Spectrometer (DSPEC) and Standard Nuclear Instrumentation Methods (NIM) Systems
D.T. Vo, P.A. Russo, and T.E. Sampson (March 1998)

Evaluating the Commercial Spectrometer Systems for Safeguards Applications Using Germanium Detectors
D.T. Vo, Los Alamos National Laboratory