Ludlum Model 42-5 Neutron Ball Cart and Detector

• Used to determine neutron fluences and radiation dose throughout energy spectrum

• 4mm x 4mm Li6I(Eu) Enriched Crystal

• 2"(5.1cm), 3"(7.6cm)' 5"(12.7cm), 8"(20.3cm), 10"(25.4 cm), and 12"(30.5cm) diameter high density polyethylene spheres

• Thermal to approximately 12 MeV Energy Range

Ludlum Model 42-30H Neutron Radiation Detector

• Detects Thermal and Fast Neutrons (0.025 eV to approximately 12 MeV).

• 10" Diameter Polyethylene Sphere Moderator

• ³He Tube

• Typically Used as an Area Radiation Monitor

Ludlum Model 42-31H  9" Moderated Neutron Radiation Detector

• Detects Thermal and Fast Neutrons (0.025 eV to approximately 12 MeV).

• 9" Diameter Cadmium-Loaded Polyethylene Sphere Moderator

• ³He Tube

• Top Mounted Bracket for Use with Portable Counting Instruments

Ludlum Model 42-41 Neutron Radiation Detector - PRESCILA

• Designed for Neutron Radiation Survey and Neutron Dose Measurement

• PRESCILA Proton Recoil Scintillator

• Sensitivity ~ 350 cpm per mrem/h

• Neutron Energy Response from Thermal to 100MeV