Helium-3 Neutron Detectors 25 mm diameter

Features

• General use
• High sensitivity
• Optimum cost-to-sensitivity ratio
• Very good sturdiness
• Active length: 2.5 cm to 1 m
• Helium-3 pressure: 1 to 10 bars
• Electrical output on HN connector
• Use in neutron scattering experiments
• Measurement of nuclear wastes
• Various industrial measurements

Description

The 25 mm diameter Helium-3 neutron detectors can be used in various applications and offer high sensitivity to thermal neutrons (in low intensity neutron fluxes, for example in neutron scattering experiments or measurement of wastes) and a very good mechanical sturdiness (in severe environmental constraints, for example for measurement of spent fuel in reprocessing plants).

The range of active lengths is between 2.5 cm and 1 m and covers many applications:
- short quasi-isotropic 5NH2.5KX detector, featuring low space for ambient neutron monitoring and various industrial measurements,
- intermediate detectors for neutron scattering experiments, dampness measurements (for example in oil prospecting) and various industrial measurements,
- long detectors for the control of fissile material in nuclear fuel cycle factories (Safeguard measurements) and characterization of alpha emitters in waste barrels before storage.

Heavy gases such as Argon, Krypton or Tetrafluoromethane may be added to Helium-3 to lower and homogenize the collection time and thus improve Time-of-Flight measurement in neutron scattering experiments at high count rates when using a fast amplifier.

The 'C' or 'CS' detectors are optimized for use with current pulse amplifiers (G.ADSF or ADS/7820 + HT/7821 type) (long distance between detector and amplifier, high count rates, important gamma radiation fluxes).