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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.

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Programs and Projects
Extreme Ultraviolet Detector Calibration Service

The extreme ultraviolet detector (EUVD) calibration service disseminates the U.S. national scale of detector responsivity in the wavelength range … more

Detector metrology

High performance optical radiometers with selected optical detectors are being designed, characterized, and calibrated in the Optical Radiation … more

Atomic Standard for Pressure

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

Thermometry

The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports … more

EUV Zone Plates for Compact Solar Radiometers

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

Quantum Physics Theory

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

Instruments
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

Synchrotron Ultraviolet Radiation Facility SURF III

The Synchrotron Ultraviolet Radiation Facility SURF III is operated by the Ultraviolet Radiation Group as a stable light source for radiometry and … more

Ultraviolet Spectral Power Responsivity Scale Realization

The NIST spectral power responsivity scale is based on cryogenic electrical substitution radiometers (ESRs) , which are considered the highest … more

Spectral comparator facilities

Visible to near-infrared spectral comparator facility (Vis/NIR SCF) The Vis/NIR SCF is a monochromator-based system that typically measures the … more

Beamline 5: Electron beam imaging

Beamline 5 of the Synchrotron Ultraviolet Radiation Facility is a diagnostics end-station used to determine the transverse size of the stored … more

Beamline 4: Ultraviolet Optical Properties and Calibrations

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

Software
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

NOTE: THIS PAGE REFERS TO THE ORIGINAL VERSION OF THIS PROJECT. THE NEWEST VERSION, DATED JANUARY 2015, CAN BE FOUND HERE.   This first (and … more

Modeled integrated scattering tool (MIST)

The MIST program has been developed to provide users with a general application to model an integrated scattering system. The program performs an … more

SCATMECH

SCATMECH is an object-oriented C++ class library developed to distribute models for light scattering applications. Included in the library are … more

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