Necessary cookies enable core functionality such as security, network management, and accessibility. You may disable these by changing your browser settings, but this may affect how the website functions.
We utilise Google Analytics cookies to help us to improve our website by collecting information on how it's used. The cookies collect information in a way that does not directly identify anyone.
Our work ensures the continued availability of national standards of neutron fluence and dose equivalent quantities. These standards are essential for calibrating and checking radiological protection instruments and dose meters. We provide an extensive range of accelerator- and source-based calibration fields.
The manganese bath is the primary standard for neutron emission rate at NPL. It measures the number of neutrons per second emitted by sealed radionuclide neutron sources such as 241Am-Be and 252Cf. The sources can then be used to calibrate neutron sensitive devices, such as area survey instruments and personal dose meters.
We are experts at producing well-characterised neutron fields via our neutron facilities, including:
Find out more about NPL's Radionuclide source-based fluence and dose standards service
Find out more about NPL's Measurement of neutron source emission rate service
Find out more about NPL's Monoenergetic neutron production service
Find out more about NPL's Thermal neutron production service
Our research and measurement solutions support innovation and product development. We work with companies to deliver business advantage and commercial success. Contact our Customer Services team on +44 20 8943 7070