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Physics Programs & Projects

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New Reference Standards for Digital Mammography
Last Updated Date: 08/31/2015

Reference radiation beams using a tungsten target and silver, rhodium, molybdenum and aluminum filters at 20 kVp to 50 kVp were developed to model … more

Alpha-gamma Counting for High Accuracy Fluence Measurement
Last Updated Date: 08/31/2015

The Alpha-Gamma device is a totally-absorbing neutron detector that has been used to measure the absolute neutron fluence of a cold, monoenergetic … more

Atomic Standard for Pressure
Last Updated Date: 08/28/2015

NIST scientists are developing a highly accurate primary standard for pressure in the range 2 MPa to 7 MPa based on fundamental physical … more

EUV Zone Plates for Compact Solar Radiometers
Last Updated Date: 08/28/2015

This project is developing zone plate technology to enable compact solar radiometers for observing the solar 30.4-nm emission from ionized helium … more

New Standardization of Ra-228
Last Updated Date: 08/26/2015

Measurements of radium isotopes in the naturally-occurring radioactive decay chains (i.e., 235 U, 238 U, and 232 Th) are exceedingly important for … more

Newtonian constant of gravitation international consortium
Last Updated Date: 08/26/2015

The Newtonian constant of gravitation G is one of the most fundamental constants of classical physics. Recent measurements of G are in … more

Quantum Physics Theory
Last Updated Date: 08/25/2015

Theoretical work relevant to the determination of values of the fundamental constants, tests of bound-state quantum electrodynamics (QED), and … more

Quantum Computation and Simulation with Neutral Atoms
Last Updated Date: 08/25/2015

Quantum information processing seeks to use the features of quantum physics to accomplish otherwise intractable computational tasks. The two main … more

Precision Measurement Grants Program
Last Updated Date: 08/25/2015

Since 1970, the National Institute of Standards and Technology (NIST) has awarded Precision Measurement Grants to faculty members of U.S. … more

Neutron Device Calibrations
Last Updated Date: 08/25/2015

NIST provides the national reference for the calibration of neutron radiation detectors and for neutron personnel dosimeters.  more

Time Measurement and Analysis Service (TMAS)
Last Updated Date: 08/25/2015

The NIST Time Measurement and Analysis Service (TMAS) was designed to assist laboratories that maintain an accurate local time standard. The … more

Lyman-Alpha Neutron Detector (LAND)
Last Updated Date: 08/25/2015

The well-known interaction of low-energy neutrons and 3 He produces a proton and a triton with 764 keV of kinetic energy shared between the two … more

Frequency Measurement and Analysis Service (FMAS)
Last Updated Date: 08/25/2015

The NIST Frequency Measurement and Analysis Service (FMAS) makes it easy to measure and calibrate any quartz, rubidium, cesium, or hydrogen maser … more

SDO/EVE/ESP Calibration
Last Updated Date: 08/25/2015

NASA launched the Solar Dynamics Observatory ( SDO ) satellite on 11 Feb 2010 on a mission to study the sun. The EUV Variability Experiment ( EVE … more

Evolution of Image Spatial Resolution
Last Updated Date: 08/25/2015

Measuring the through-plane water content in a hydrogen fuel cell is critical to understanding this complicated heat and mass transport … more

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