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Displaying records 621 to 630 of 774 records.
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621. Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers
Topic: Physics
Published: 1/29/2010
Authors: William H Rippard, Alina M Deac, Matthew R Pufall, Justin M Shaw, Mark W Keller, Stephen E Russek, Gerrit E Bauer, Claudio Serpico
Abstract: We have measured spin-transfer-induced dynamics in magnetic nanocontact devices having a perpendicularly magnetized Co/Ni free layer and an in-plane magnetized CoFe fixed layer. The frequencies and powers of the excitations agree well with the predic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903981

622. Spiral Resonators for On-Chip Laser Frequency Stabilization
Topic: Physics
Published: 9/17/2013
Authors: Scott A Diddams, Hansuek Lee, Myoung=Gyun Suh, Tong Chen, Jiang Li, Kerry J. Vahala
Abstract: Frequency references are indispensable to radio, microwave, and time keeping systems, with far reaching applications in navigation, communi- cation, remote sensing, and basic science. Over the past decade there has been an optical revo- lution in tim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913960

623. Stabilization of femtosecond laser frequency combs with subhertz residual linewidths
Topic: Physics
Published: 5/15/2004
Authors: A Bartels, Christopher W Oates, Leo W. Hollberg, Scott A Diddams
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104845

624. Standardization of 237Np
Topic: Physics
Published: 12/4/2013
Authors: Lizbeth Laureano-Perez, Ryan P Fitzgerald, Ronald Colle
Abstract: The standardization of 237Np was investigated. The certified massic activity for 237Np was obtained by 4 liquid scintillation (LS) counting with correction for the 233Pa daughter using the CIEMAT/NIST efficiency tracing method ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913828

625. Standardization of Broadband UV Measurements
Topic: Physics
Published: 1/1/2013
Author: George P Eppeldauer
Abstract: The CIE standardized rectangular-shape UV response functions can be realized only with large spectral mismatch errors. The spectral power-distribution of UV sources is not standardized. Accordingly, the readings of different types of UV meters, even ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913173

626. Standardization of Broadband UV Measurements for 365 nm LED Sources
Series: Journal of Research (NIST JRES)
Report Number: 117.004
Topic: Physics
Published: 2/2/2012
Author: George P Eppeldauer
Abstract: Broadband UV measurements are analyzed when UV-A irradiance meters measure optical radiation from 365-nm sources. The CIE standardized rectangular-shape UV-A function can be realized only with large spectral mismatch errors. The spectral power-di ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909003

627. State Discriminiation Signal Nulling Receivers
Topic: Physics
Published: 9/6/2011
Authors: Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Sergey V Polyakov, Julius Goldhar, Jonathan Kosloski, Alan L Migdall
Abstract: Optimized state-discrimination receiver strategies for nonorthogonal states can improve the capacity of the communication channels operating with error rates below the ones corresponding to conventional receivers. Coherent signal-nulling receivers us ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909465

628. State Resolved THz Spectroscopy and Dynamics of Crystalline Peptide/Water Systems
Topic: Physics
Published: 7/11/2011
Authors: Zeeshan Ahmed, Shin G. Chou, Karen M. Siegrist, David F Plusquellic
Abstract: State resolved THz studies of crystalline peptides and their hydrates have provided precise measures of the infrared active phonon modes that reflect motions on the longest possible length scales in these systems. The impact of co-crystallized water ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907455

629. State-of-the-Art RF Signal Generation From Optical Frequency Division
Topic: Physics
Published: 9/2/2013
Authors: Archita Hati, Craig W Nelson, Corey Andrew Barnes, Danielle Grace Lirette, Tara Michele Fortier, Franklyn J Quinlan, Jason A. (Jason) DeSalvo, Andrew D Ludlow, Till P Rosenband, Scott A Diddams, David Allan Howe
Abstract: We present the design of a novel, ultra-low phase-noise frequency synthesizer implemented with extremely low noise regenerative frequency dividers. This synthesizer generates eight outputs viz. 1.6 GHz, 320 MHz, 160 MHz, 80 MHz, 40 MHz, 20 MHz, 10 MH ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911991

630. Status of a compact cold-atom CPT frequency standard
Topic: Physics
Published: 7/31/2011
Authors: Elizabeth A Donley, Francois-Xavier R. Esnault, John E Kitching, Eugene N Ivanov
Abstract: We describe the main progress towards the realization of a cold atom frequency standard based on coherent population trapping (CPT). We explain our particular CPT configuration and give details on the experimental setup.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908614



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