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Displaying 151 - 175 of 446

Rydberg Atom-based RF Power Measurements

November 4, 2018
Author(s)
Matthew T. Simons, Marcus D. Kautz, Abdulaziz H. Haddab, Joshua A. Gordon, Christopher L. Holloway, Thomas P. Crowley
The power transmitted through a waveguide was determined using in-situ atom-based electric field measurements. The field distribution in the waveguide was measured using Rydberg atoms to find the maximum field, which was used to determine the power. For a

Origin of Surface Canting Within Fe 3 O 4 Nanoparticles

October 2, 2014
Author(s)
Kathryn L. Krycka, Julie A. Borchers, R. A. Booth, Y. Ijiri, K. Hasz, J. J. Rhyne, S. A. Majetich
… which quantifies the spin canting angle to between 23° and 42° at 1.2 T. Simultaneously, an energy-balance model is …

Comparison of Microwave Black-Body Target Radiometric Measurements

July 30, 2010
Author(s)
Dave K. Walker, Dazhen Gu, Katherine MacReynolds, Randy Direen, James P. Randa, Amanda Cox, Derek A. Houtz, Robert L. Billinger
… targets with two different antennas within the WR-42 (18 26.5 GHz) waveguide band. Uncertainty estimates are …

Absolute Magnitude and Phase Calibrations

October 1, 2007
Author(s)
Kate Remley, Paul D. Hale, Dylan Williams
In VNA measurements, the magnitude and phase of a transmitted or reflected wave are measured relative to that of the incident wave. VNA measurements are made a single frequency at a time and each frequency component is acquired relative to the internally

Iridate Li 8 IrO 6 : An Antiferromagnetic Insulator

November 15, 2021
Author(s)
Callista M. Skaggs, Peter E. Siegfried, Chang-Jong Kang, Craig Brown, Fu Chen, Lu Ma, Steven N. Ehrlich, Yan Xin, Mark Croft, Wenqian Xu, Saul H. Lapidus, Nirmal J. Ghimire, Xiaoyan Tan
… O and IrO 2 starting materials in a sealed quartz tube at 650 °C for 48 hours. The structure was determined from …

Characterization of New 5M and 7M Polytypes of Niobia-Doped Ca 2 Ta 2 O 7

October 12, 2021
Author(s)
I E. Grey, Robert S. Roth, W G. Mumme, J Planes, Leonid A. Bendersky, C Li, J Chenavas
… monoclinic symmetry with a = 12.712 (1), b = 7.372(1), c = 42.485(1) , b = 95.76(1) , Z= 28, space group C2. 7M … is isostructural, with a = 12.7170 (6), b = 7.3728(3), c = 42.64(2) , b = 95.755(5) . 5M Ca2Ta1.8Nb0.2O7 is monoclinic …

Dispersion-Strengthened Silver Alumina for Sheathing Bi2Sr2CaCu2O8+x Multifilamentary Wire

February 1, 2012
Author(s)
Amir Kajbafvala, William Nachtrab, Xifeng Lu, Frank Hunte, Xiaotao Liu, Najib Cheggour, Terence Wong, Justin Schwartz
High strength, high modulus dispersion strengthened (DS) silver-aluminum alloys are studied for sheathing Bi 2Sr 2CaCu 2O8 +x (Bi2212) round wire. Dispersion strengthening is an effective method for producing a fine grain metallurgical structure that is

A High-Field, Low-Current Superconducting Ioffe Magnetic Trap

October 12, 2021
Author(s)
S N. Dzhosyuk, C R. Brome, J S. Butterworth, P R. Huffman, C E. Mattoni, D N. McKinsey, R A. Michniak, L Yang, John M. Doyle
A superconducting Ioffe magnetic trap is designed, built and characterized. The trap consists of four racetrack-shaped quadrupole coils and two solenoid assemblies. Coils are wet wound with multifilament copper-clad NgTi superconducting wire embedded in an

Interfacial Response of a Fluorescent Dye Grafted to Glass

October 1, 2000
Author(s)
Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, J H. VanZanten, Joy Dunkers, Richard~undefined~undefined~undefined~undefined~undefined Parnas
… and immersed in the resin, the fluorescence blue shift is 42 nm. The difference in blue shift is attributed to a …

Mossbauer Study of NaCl-Coated Fe Nanoparticles

January 15, 1998
Author(s)
Alexander J. Shapiro, Robert D. Shull, N Gorshkov, Michael R. Zachariah
The potential use of magnetic nanoparticles as a very efficient refrigerant for magnetic refrigerators at temperatures well above 4.2 K was recently suggested [1,2]. Suitable for this purpose NaCl-coated iron nanoparticles were synthesized in a sodium

Problems and progress in the measurement of reference mass spectra

May 29, 1994
Author(s)
C L. Clifton, Anzor I. Mikaia, Stephen Stein
Compounds of interest and their availability as well as purity of the samples in the market are discussed. Difficulties in acquiring samples of common chemicals are noted. Sample preparation procedures for GC-MS analysis along with the instrumental
Displaying 151 - 175 of 446
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