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Search Publications by: Solomon I Woods (Fed)

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Displaying 26 - 50 of 72

Design, calibration, and application of a cryogenic low-background infrared radiometer for spectral irradiance and radiance measurements from 4 um to 20 um wavelength

March 2, 2021
Author(s)
Simon G. Kaplan, Solomon Woods, Eric L. Shirley, Adriaan C. Carter, Timothy M. Jung, James E. Proctor, Dale R. Sears, Jinan Zeng
We have constructed, calibrated, and tested a cryogenic low-background infrared radiometer for both spectral radiance and irradiance measurements over the 4 um to 20 um wavelength range. The radiometer has been used to compare two primary methods for

Design and Engineering Colloidal Magnetic Particles for Nanoscale Thermometry

September 2, 2020
Author(s)
Adam J. Biacchi, Thinh Q. Bui, Cindi L. Dennis, Solomon I. Woods, Angela R. Hight Walker
Thermometry based on magnetic nanoparticles (MNPs) is an emerging technology that allows for remote temperature measurements throughout a volume that are impossible to achieve using conventional probe-based or optical methods. This metrology is based on

Nano-kelvin DC and AC Meissner-TES Thermometry

February 4, 2019
Author(s)
Solomon I. Woods, Adriaan C. Carter, Timothy M. Jung, Dana R. Defibaugh
The Meissner-TES is a relatively new type of high resolution cryogenic thermometer based upon a transition edge sensor (TES) which employs the magnetic transition of a superconductor to measure temperature. We have improved the signal-to-noise for DC

Characterisation of New Planar Radiometric Detectors using Carbon Nanotube Absorbers under Development at NIST

June 13, 2018
Author(s)
Malcolm G. White, Nathan A. Tomlin, Christopher S. Yung, Michelle S. Stephens, Ivan Ryger, Solomon I. Woods, John H. Lehman, Igor Vayshenker
Carbon nanotube technology, in conjunction with silicon micro-fabrication techniques, has enabled us to develop planar radiometric detectors, which has led to the establishment of a new generation of primary standards. The goal is to develop compact, fast

Wideband infrared trap detector based upon doped silicon photocurrent devices

April 9, 2018
Author(s)
Solomon I. Woods, James E. Proctor, Timothy M. Jung, Adriaan C. Carter, Dana R. Defibaugh, Jorge Neira
We have designed, fabricated and measured infrared trapping detectors made from arsenic-doped silicon (Si:As) blocked impurity band (BIB) photodetectors. These trap detectors are composed of two detectors in a wedge geometry, with an entrance aperture

Analysis of the Noise Spectra from Oxidized Superparamagnetic Nanoparticles

August 18, 2014
Author(s)
Solomon I. Woods, Snorri Ingvarsson, Shouheng Sun, John Kirtley
Expressions for the thermal noise from a collection of exchange-biased magnetic nanoparticles are derived and used to analyze the magnetic noise from thin films of partially oxidized nanoparticles. Functionalized Co nanoparticles with diameters between 3

Experimental measurements and noise analysis of a cryogenic radiometer

July 10, 2014
Author(s)
Solomon I. Woods, Timothy M. Jung, Adriaan C. Carter, Raju V. Datla , Stephen M. Carr
A cryogenic radiometer device, intended for use as part of an electrical-substitution radiometer, was measured at low temperature. The device consists of a receiver cavity mechanically and thermally connected to a temperature-controlled stage through a

Calibration of IR Test Chambers with the Missile Defense Transfer Radiometer

September 30, 2013
Author(s)
Simon G. Kaplan, Solomon I. Woods, Adriaan C. Carter, Timothy M. Jung
The Missile Defense Transfer Radiometer (MDXR) is designed to calibrate infrared collimated and flood sources over the fW/cm2 to W/cm2 power range from 3 m to 28 m in wavelength. The MDXR operates in three different modes: as a filter radiometer, a
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