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Displaying 151 - 175 of 570

Progress Towards Arrays of Microcalorimeter X-ray Detectors

September 1, 2001
Author(s)
Sae Woo Nam, David A. Wollman, Dale Newbury, Gene C. Hilton, Kent D. Irwin, David A. Rudman, Steven Deiker, Norman F. Bergren, John M. Martinis
… are its low count rate (500 x -1 ) and small area (0.04 mm 2 for a bare single pixel, 5 mm 2 with a polycapillary optic). We are developing a 32x32 pixel array with a total area of 40 mm^2^ and with a total count rate between 10 5 s -1 . In this …

10 Volt Programmable Josephson voltage standard circuits using NbSi-barrier junctions

October 28, 2010
Author(s)
Paul D. Dresselhaus, Mike Elsbury, David I. Olaya, Charles J. Burroughs, Samuel P. Benz
… ~ 300,000 junctions, which were divided into either 16 or 32 sub-arrays. Triple stacked junctions were in order to fit … margin. Although the margins on both the 16-array and 32-array circuits were much greater than 1 mA, the circuit …

A portable cold 87Rb atomic clock with frequency instability at one day in the 10 -15 range

May 21, 2018
Author(s)
Joshua J. Savory, F G. Ascarrunz, L I. Ascarrunz, Alessandro L. Banducci, M C. Delgado Aramburo, Y Dudin, Steven R. Jefferts
We present a small portable cold 87Rubidium atomic clock with frequency uncertainty of less than 𝟑 × 𝟏𝟎 −𝟏𝟓 in one day of averaging time. The clock is under development at SpectraDynamics for the Defense Advanced Research Projects Agency (DARPA) Portable

X-ray Powder Diffraction Studies of (BaxSr1-x)2Co2Fe12O22 and (BaxSr1-x)Co2Fe16O27

June 30, 2015
Author(s)
Winnie K. Wong-Ng, Guangyao Liu, Yonggao Yan, Kevin R. Talley, James A. Kaduk
… layered compounds, namely, (BaxSr1-x)2Co2Fe12O22 (x = 0.2, 0.4, 0.6, 0.8) and (BaxSr1-x)Co2Fe16O27 (x = 0.2, 0.4, … range from a = 5.90205(12) Å to 5.8979(2) Å, and c = 32.9002(10) Å to 32.8110(13) Å for x = 0.2 to 0.8. Results of measurements of …
Displaying 151 - 175 of 570
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