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Topic Area: Physics

Displaying records 91 to 100 of 733 records.
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91. Tunnel junction sensors for HCI-surface measurements at low kinetic energies
Topic: Physics
Published: 1/25/2013
Authors: Joshua M Pomeroy, Russell Lake
Abstract: In recent years, we have developed and deployed the capability to make and use tunnel junctions sensors (TJS) as extremely sensitive tools for the measurement of surface nanofeatures created by particle surface interactions. Highly charged ion (HCI) ...

92. Improvements in silicon oxide dielectric loss for superconducting microwave detector circuits
Topic: Physics
Published: 1/24/2013
Authors: Dale Li, Jason Austermann, James A Beall, Daniel T Becker, Hsiao-Mei Cho, Anna R.E. Fox, Nils Halverson, Jason Henning, Gene C Hilton, Johannes Hubmayr, Jeffrey Lee Van Lanen, John P Nibarger, Michael D. Niemack, Kent D Irwin
Abstract: Dielectric loss in low-temperature superconducting integrated circuits can cause lower overall efficiency, particularly in the 90 to 220 GHz regime. We present a method to tune the dielectric loss for silicon oxide deposited by plasma-enhanced ch ...

93. NIST Time and Frequency Bulletin
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 1149-01
Topic: Physics
Published: 1/18/2013
Author: Petrina C Potts
Abstract: The Time and Frequency Bulletin provides information on performance of time scales and a varieth of broadcasts (and related information) to users of the NIST services.

94. Critically Evaluated Energy Levels and Spectral Lines of Singly Ionized Indium (In II)
Series: Journal of Research (NIST JRES)
Report Number: 118.004
Topic: Physics
Published: 1/14/2013
Author: Alexander Kramida
Abstract: A comprehensive list of the best measured wavelengths in the In II spectrum has been compiled. Uncertainties of the wavelength measurements have been analyzed, and existing inconsistencies have been resolved. An optimized set of fine-structure en ...

95. Time Transfer Using a Satellite Navigation System
Topic: Physics
Published: 1/1/2013
Author: Judah Levine
Abstract: Article does not have an abstract. It was solicited by the editors of the yearbook and was written based on their detailed comments about the topics to be covered, the technical detail, etc. It is intended for high-school students and contains materi ...

96. Hybrid Electro-Optically Modulated Microcombs
Topic: Physics
Published: 12/28/2012
Authors: Pascal Patrice Del'Haye, Scott B Papp, Scott A Diddams
Abstract: Optical frequency combs based on mode-locked lasers have proven to be invaluable tools for a wide range of applications in precision spectroscopy and metrology. Recently, a novel principle of optical frequency comb generation in whispering gallery mo ...

97. Ultrafast element-specific magnetization Dynamics of complex magnetic materials on a table-top
Topic: Physics
Published: 12/21/2012
Authors: Thomas J Silva, Justin M Shaw, Hans T. Nembach, Chan La-O-Vorakiat, Henry C. Kapteyn, Margaret M. Murnane, Stefan Mathias, Roman Adam, Patrik Grychtol, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Dennis Rudolf
Abstract: We review recent progress in femtosecond magnetization dynamics probed by extreme ultraviolet pulses from high-harmonic generation. In a transverse magneto-optical Kerr geometry, we establish an ultrafast, element-specific experimental capability - ...

98. A Low-Power, High-Sensitivity Micromachined Optical Magnetometer
Topic: Physics
Published: 12/11/2012
Authors: Rahul R. (Rahul) Mhaskar, Svenja A Knappe, John E Kitching
Abstract: We demonstrate a fiber-optically coupled optical magnetometer based on a microfabricated ^u87^Rb vapor cell in a micromachined silicon sensor head. The cell is optically heated with light at 1.5 mm brought to the cell through an optical fiber and abs ...

99. Single bead detection with a NMR micro capillary probe
Topic: Physics
Published: 12/6/2012
Authors: Yoshihiro Nakashima, Michael Anthony Boss, Stephen E Russek, John M Moreland
Abstract: We have developed a nuclear magnetic resonance (NMR) microcapillary probe for the detection of single magnetic microbeads. The geometry of the probe has been optimized so that the signal from the background water has a similar magnitude compared to t ...

100. Phase-Noise Measurement System for the Terahertz-Band
Topic: Physics
Published: 11/30/2012
Authors: Jason A. (Jason) DeSalvo, Archita Hati, Craig W Nelson, David Allan Howe
Abstract: We present initial phase noise measurements in support of terahertz electronics, in the frequency range generally regarded as 0.1 to 10 THz. Using digital phase noise measurement techniques and an even-harmonic mixer, we achieve a phase noise measur ...

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