Please note: This is a Sole Source Notification. Sodium Iodide [NaI(Tl)] Gamma Scintillation Detection System: NaI(Tl) scintillation crystals are widely used in most standard gamma spectroscopy applications due to their unmatched high light output and excellent match of their emission spectrum to the sensitivity of photomultiplier tubes. The Agency is in need of a gamma detection system that can qualify and quantify gamma radiation from energies ranging from approximately 60 kiloeclectron volts to at least 3,000 kiloeclectron volts and have the ability to provide gamma spectral identification with a minimum of 1024 channels. The system output should be capable of providing count rates and exposure rates. The system need to be mobile and have the ability for real-time data transmission which allows for alarm tracking, nuclide identification, and mapping displays. Further, the system needs to have the ability to add secondary radiation detectors. Geiger-Muller (GM) detection system: consists of a gas-filled tube containing electrodes, between which there is an electrical voltage, but no current, flowing. When ionizing radiation passes through the tube, a short, intense pulse of current passes from the negative electrode to the positive electrode and is measured or counted. The number of pulses per second measures the intensity of the radiation field. The Agency is looking to pair the NaI(Tl) detection system with a GM detection system that allows for the quantification of gamma exposure rates from approximately 0.5 milliroentgen per hour to at least 10 roentgen per hour and needs to have gamma efficiency greater than 200 counts per second per millroentgen per hour. The system need to be mobile and have the ability for realtime data transmission which allows for alarm tracking, exposure rates, and mapping displays. Further, the system needs to have the ability to add secondary radiation detectors. Further, the system needs to have the ability to add secondary radiation detectors.
