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Institution

Naval Surface Warfare Center

FacilityWashington D.C., District of Columbia, United States
About: Naval Surface Warfare Center is a facility organization based out in Washington D.C., District of Columbia, United States. It is known for research contribution in the topics: Sonar & Radar. The organization has 2855 authors who have published 3697 publications receiving 83518 citations. The organization is also known as: NSWC.


Papers
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Journal ArticleDOI
TL;DR: In this article, the effects of 46 MeV proton irradiation induced trap generation and its impact on the electrical characteristics of silicon-germanium (SiGe) heterojunction bipolar transistors (HBTs) from an advanced ultrahigh vacuum/chemical vapor deposition (UHV/CVD) SiGe BiCMOS technology are examined and discussed for the first time.
Abstract: The effects of 46 MeV proton irradiation induced trap generation and its impact on the electrical characteristics of silicon-germanium (SiGe) heterojunction bipolar transistors (HBTs) from an advanced ultrahigh vacuum/chemical vapor deposition (UHV/CVD) SiGe BiCMOS technology are examined and discussed for the first time. At proton fluences as high as 10/sup 14/ p/cm/sup 2/ the peak current gain of the devices degraded by less than 8% compared to the pre-irradiated samples. The maximum oscillation frequency and cutoff frequency of the SiGe HBTs showed only minor degradation after 10/sup 14/ p/cm/sup 2/. Calibration of 2-D device simulation (MEDICI) to measured data in both forward and inverse modes of operation was used to infer the spatial location of the proton-induced traps. Traps in the collector-base space charge region appear as generation/recombination (G/R) centers in the inverse emitter-base region and are the result of displacement damage. Traps at the emitter-base spacer oxide interface appear as G/R centers in the forward emitter-base space charge region and are the result of ionization damage. Taken together, these results suggest that UHV/CVD SiGe HBT technology is robust to proton fluences at least as high as 10/sup 13/ p/cm/sup 2/ without radiation hardening.

52 citations

Journal ArticleDOI
TL;DR: This paper describes how R&C can be achieved by using a simulation conceptual model (CM) in a community of interest (COI) and presents how a CM developed for a COI can assist inR&C for the design of any type of large-scale complex M&S application in that COI.
Abstract: Reusability and composability (R&C) are two important quality characteristics that have been very difficult to achieve in the Modelling and Simulation (M&S) discipline. Reuse provides many technical and economical benefits. Composability has been increasingly crucial for M&S of a system of systems, in which disparate systems are composed with each other. The purpose of this paper is to describe how R&C can be achieved by using a simulation conceptual model (CM) in a community of interest (COI). We address R&C in a multifaceted manner covering many M&S areas (types). M&S is commonly employed where R&C are very much needed by many COIs. We present how a CM developed for a COI can assist in R&C for the design of any type of large-scale complex M&S application in that COI. A CM becomes an asset for a COI and offers significant economic benefits through its broader applicability and more effective utilization.

52 citations

Journal ArticleDOI
TL;DR: In this article, the authors present distinct absorption spectra in the terahertz region for polymorphs of the secondary high explosive 1,3,5,7-tetranitro-1, 3, 5, 7-Tetrazocane (HMX) for α-HMX.

51 citations

Journal ArticleDOI
TL;DR: In this article, a coupled, thermal and gas generation/venting model was developed for simulating the onset and evolution of thermal runaway in 18650 format Li-ion battery cells.

51 citations

Proceedings ArticleDOI
25 Jul 2002
TL;DR: In this paper, two reduced scale hardware test beds have been developed for the design of power electronics based power distribution and propulsion systems, and the first of these, the Naval Combat Survivability Generation and Propulsion Testbed, focuses on primary power generation and propulsion.
Abstract: There are numerous issues involved in the design of power electronics based power distribution and propulsion systems. These issues include power density, dynamic stability, efficiency, acoustic and waterborne noise, and electromagnetic compatibility, to name a few. In order to address these issues, as well as to test CAD tools for designing these systems, two reduced scale hardware test beds have been developed. The first of these, the Naval Combat Survivability Generation and Propulsion Testbed, focuses on primary power generation and propulsion. The second of these, the Naval Combat Survivability DC Distribution test bed, focuses on DC power distribution using a zonal architecture.

51 citations


Authors

Showing all 2860 results

NameH-indexPapersCitations
James A. Yorke10144544101
Edward Ott10166944649
Sokrates T. Pantelides9480637427
J. M. D. Coey8174836364
Celso Grebogi7648822450
David N. Seidman7459523715
Mingzhou Ding6925617098
C. L. Cocke513128185
Hairong Qi503279909
Kevin J. Hemker4923110236
William L. Ditto431937991
Carey E. Priebe434048499
Clifford George412355110
Judith L. Flippen-Anderson402056110
Mortimer J. Kamlet3910812071
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20233
20227
202172
202071
201982
201884