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Physics Portal - Overview

Physics research at NIST includes everything from improving the safety of medical radiation procedures to developing future "quantum information" technologies that generate unbreakable codes. NIST provides the measurements, standards, and technical expertise scientists and industries need to push the limits of the fundamental properties of nature.


Joint Quantum Institute (JQI) >>

At Earth from a Distance: NIST’s Role in Observing Our Planet from Space >>

Programs and Projects
SDO/EVE/ESP Calibration

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

A Precision Reactor Antineutrino Oscillation and Spectrum Measurement (PROSPECT)

PROSPECT, the PRecision Oscillation and SPECTrum experiment, located at the High Flux Isotope Reactor (HFIR) at ORNL will measure the … more

Frequency Measurement and Analysis Service (FMAS)

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

Affect of Partial Charge Calculation Method on Adsorption Thermodynamics

In classical molecular simulations, electrostatic contributions to the potential energy are typically accounted for by assigning partial charges … more

CODATA values of the fundamental constants

Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The … more

Air Kerma Calibrations in Radiation Protection Level 137Cs and 60Co Gamma Ray Beams

The Dosimetry Group maintains and disseminates the national measurement standards for air-kerma (exposure) from 137 Cs and 60 Co gamma-ray beams … more

Beamline 3: Center for Advanced Synchrotron Radiation-Based Metrology

Streamlining Detector-based Radiometry at SURF III NIST has maintained the Synchrotron Ultraviolet Radiation Facility (SURF) for nearly 6 decades … more

Beamline 4: Ultraviolet Optical Properties and Calibrations

Beamline 4 is a general purpose radiometric beamline consists of a 2 m normal-incidence monochromator to disperse radiation from SURF III. An … more

Beamline 7:  EUV reflectometry

The NIST/DARPA EUV Reflectometry facility began in the late 1980's to make measurements of the reflectivity of EUV multilayer optics for … more

Beamline 8: EUV Surface Chemistry & Lifetime

The purpose of the end station on Beamline 8 at the Synchrotron Ultraviolet Radiation Facility (SURF III) is to study the degradation of materials … more

EUV Detector Radiometry Beamline

The EUV Detector Radiometry Beamline (BL-9) is devoted to detector-based radiometry and other measurements of optical properties in the extreme … more

Beamline 2: Spectrometer Calibrations

Absolute irradiance calibrations based on the calculability of synchrotron radiation are performed on beamline 2. See GOES-R/EXIS and SDO as … more

jb95 Spectral fitting program

A graphical user interface program, JB95 , based on a Windows 95 © API platform has been written in the C programming language to aid in the … more

FPGA-based Digital Control Box for Phase Stabilization of a Frequency Comb

This page provides information on firmware/software used at NIST to phase-lock a frequency comb. The firmware/software operates with hardware that … more

Electron holography

An electron hologram is a fringe modulated image containing the amplitude and phase information of an electron transparent object. The HolograFREE … more

Noncollinear phase matching in uniaxial and biaxial crystals

Although significant work has been done to characterize collinear phase matching and to present many of its applications, noncollinear phase … more

FPGA-based multicoincidence recipe and software

This project allows investigators to build their own data acquisition instruments to collect and statistically process data in real time, then … more

Old Version of FPGA


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