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Physics Instruments

(showing 31 - 45 of 48)
Primary optical watt radiometer (POWR) facility
Last Modified: 03/30/2015

POWR is a cryogenic electrical substitution radiometer that serves as the Nation's optical power reference.

Radiance temperature calibration laboratory
Last Modified: 10/13/2011

Radiance Temperature Calibration Laboratory is used for the calibration of radiation thermometers, tungsten-strip lamps and heat flux gauges. more

Radiopharmaceutical Standardization Laboratory
Last Modified: 06/03/2015

Radioactivity measurements for diagnostic and therapeutic nuclear medicine in the United States are based on measurements at NIST. Activity … more

Reference transmittance spectrophotometer
Last Modified: 07/31/2014

The Reference Transmittance Spectrophotometer (RTS) is the national reference instrument for regular spectral transmittance measurements of … more

Retroreflection calibration facility (CHARM)
Last Modified: 01/08/2015

In 1993, the United States Congress directed the U.S. Department of Transportation to establish "a standard for a minimum level of … more

Si Photodiode Transfer Standard
Last Modified: 09/03/2015

Silicon (Si) photodiodes are issued by NIST as transfer standard detectors throughout the extreme ultraviolet spectral region (5 nm to 254 nm). … more

SIRCUS facility and uncertainties
Last Modified: 07/29/2015

SIRCUS facility: The basic SIRCUS calibration setup is shown at the right. The output from a tunable laser is sent through an intensity … more

Spectral comparator facilities
Last Modified: 08/21/2015

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

Spectrally tunable lighting facility
Last Modified: 11/28/2014

Solid-state lighting (SSL) is increasingly being introduced into the market and it is expected that many of the light sources currently used for … more

STARR
Last Modified: 07/31/2014

STARR is the national reference instrument for spectral reflectance measurements of spectrally neutral, non-fluorescent samples at room … more

Synchrotron Ultraviolet Radiation Facility SURF III
Last Modified: 09/04/2015

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

System for infrared spectral emittance of materials
Last Modified: 07/27/2015

This facility enables the measurement of spectral emittance using the direct method of radiance comparison of the sample with a blackbody … more

Telescope calibration facility
Last Modified: 10/19/2011

The Telescope Calibration Facility (TCF) was designed to support the NIST Stars project by providing a facility to radiometricly calibrate long … more

Thermal infrared transfer radiometer (TXR)
Last Modified: 08/14/2015

The NIST Thermal-infrared Transfer Radiometer (TXR) is used for measuring the radiance temperature in the thermal-infrared spectral region of … more

Time-resolved infrared spectroscopy (TRIR)
Last Modified: 08/11/2015

Three independent femtosecond laser systems used for generating ultrafast pulses in the mid-IR (and far infrared:THz) through the UV; infrared … more

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