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Radiation Physics Programs & Projects

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Measurement of the Neutron Magnetic Dipole Moment Using Schwinger Scattering
Last Updated Date: 07/30/2013

This experiment will measure Schwinger scattering in silicon. Previous attempts done by Shull and others did not produce the expected results. The … more

Search for Time Reversal Violation in Polarized Neutron Decay (emiT)
Last Updated Date: 07/30/2013

The "emiT" experiment searches for - or will set an improved upper bound on - the time-reversal asymmetry term in neutron beta decay. It does so … more

Neutron Source Strength Calibrations
Last Updated Date: 07/23/2013

The neutron source calibration facility operated by NIST is a world-class calibration laboratory providing neutron source   calibration services … more

New Manganese Sulfate Bath
Last Updated Date: 07/23/2013

Description: Many neutron sources required by Homeland Security have a lower neutron emission rate than is appropriate for the NIST calibration … more

Characterization of Porous Transport Media for Hydrogen Fuel Cells
Last Updated Date: 07/23/2013

Efficiently managing water transport in proton exchange membrane fuel cells (PEMFCs) is critical to the performance, cost, and durability in order … more

Neutron Imaging of Lithium and Alkaline Batteries
Last Updated Date: 07/23/2013

A common topic in energy systems is the need for in situ measurement of the mass transport of light ion species such as hydrogen or lithium.   … more

Precision Measurement of the Neutron-He3 Incoherent Scattering Length
Last Updated Date: 07/23/2013

The Neutron Interferometer and Optics Facility performed a precision measurement of the n- 3 He incoherent scattering length. Quantum … more

Neutron Tomography of Hydrogen Storage Bed
Last Updated Date: 07/23/2013

Future hydrogen fuel cell vehicles will require hydrogen storage vessels that efficiently store and quickly release the hydrogen fuel.   The … more

Measurement of the Parity Non-Conserving Neutron Spin Rotation (PNC) in Liquid Helium
Last Updated Date: 07/23/2013

We recently completed a successful run of an experiment to study the strong interaction using weak interaction properties of the neutron. The … more

Towards a Neutron Microscope
Last Updated Date: 07/23/2013

A novel neutron lens based on reflection has recently been developed that could greatly benefit neutron imaging and other neutron scattering … more

Neutron Imaging for Advanced Catalyst Development and Durability Studies
Last Updated Date: 07/22/2013

Neutron imaging continues to play a key role in elucidating the role of water in proton exchange membrane fuel cells (PEMFCs) as highlighted by … more

Measurement of the Electron-Antineutrino Correlation in Neutron Decay
Last Updated Date: 07/22/2013

The angular correlation between the beta electron and antineutrino in nuclear beta decay α is the least well-known of the group of neutron decay … more

Magnetically Trapped Neutron Lifetime Experiment
Last Updated Date: 07/22/2013

The decay of the free neutron is the simplest nuclear beta decay and is the prototype for all charged current semi-leptonic weak interactions.  … more

High-Efficiency Neutron Detection and Spectroscopy
Last Updated Date: 07/22/2013

Precise knowledge of the fast neutron spectrum and fluencies is essential for several experimental endeavors requiring the low-background of the … more

Alpha-gamma Counting for High Accuracy Fluence Measurements
Last Updated Date: 07/22/2013

Neutron fluence is measured by counting gamma-rays from the reaction n+ 10 B® 4 He+ 7 Li + g(478KeV) with a calibrated gamma detector. The gamma … more

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