NASA Scientific and Technical Aerospace Reports - The University ...

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PHYSICS (GENERAL)
Includes general research topics related to mechanics, kinetics, magnetism, and electrodynamics. For specific areas of physics see
categories 71 through 77. For related instrumentation see 35 Instrumentation and Photography; for geophysics, astrophysics, or solar
physics see 46 Geophysics, 90 Astrophysics, or92 Solar Physics.
20100017056 Argonne National Lab., IL, USA
General Searches for New Particles. Atlas Note: Atl-Com-Phys-2009
Boomsma, J.; Chekanov, S.; November 20, 2009; 15 pp.; In English
Contract(s)/Grant(s): DE-AC02-06CH11357
Report No.(s): DE2010-970380; ANL-HEP-TP-09-110; No Copyright; Avail.: National Technical Information Service
(NTIS)
The program InvMass has been developed to perform a general model-independent search for new particles using the
ATLAS detector at the Large Hadron Collider (LHC), a proton-proton collider at CERN. The search is performed by
examining statistically significant variations from the Standard Model predictions in exclusive event classes classified
according to the number of identified objects. The program, called InvMass, finds all relevant particle groups identified with
the ATLAS detector and analyzes their production rates, invariant masses and the total transverse momenta. The generic code
of InvMass can easily be adapted for any particle types identified with the ATLAS detector. Several benchmark tests are
presented.
NTIS
Particles; Detectors; Collisions
20100017077 Chief of Naval Personnel, Washington, DC USA
Strategic Vision for Spectrum
Jan 2010; 28 pp.; In English
Report No.(s): AD-A516909; No Copyright; Avail.: Defense Technical Information Center (DTIC)
ONLINE: http://hdl.handle.net/100.2/ADA516909
This Strategic Vision identifies spectrum issues crucial to Department of the Navy operational capabilities and outlines
the leadership roles within the Navy and Marine Corps. The goal of this Strategic Vision is an innovative, entrepreneurial,
spectrum strategy based on evolving naval warfare requirements. This will allow the Secretary of the Navy (SECNAV) to
engage in overall Department of Defense (DOD) spectrum strategy planning, foster sharing and compatibility with
commercial entities, recognize creative approaches to warfighting requirements, and establish professional relationships with
industry groups, research laboratories, academia, and the operational DON components. Through mutually beneficial
relationships with government and non-government communication interests, policy initiatives and focused research should
transform competition for spectrum assets into productive collaboration within those resources.
DTIC
Electromagnetic Spectra; Navy; Spectra
20100017099 Lawrence Livermore National Lab., Livermore, CA USA
Source Tilting Within the Difference Formulation for Radiation Transport
Luu, T.; Brooks, E.; Szoke, A.; October 2006; 38 pp.; In English
Contract(s)/Grant(s): W-7405-Eng-48
Report No.(s): DE2009-968921; UCRL-TR-225197; No Copyright; Avail.: National Technical Information Service (NTIS)
We apply a heuristic technique known as ‘source tilting’ to a Monte Carlo solution for radiation transport, in the difference
formulation, that otherwise employs a piecewise-constant treatment of the material temperature. Source tilting improves the
accuracy of the piecewise-constant treatment, reducing the excessive energy flow that occurs in the thick limit. An analysis
of the cause of excessive energy flow suggests an interpolation scheme that removes this defect, obtaining the correct diffusion
limit flux between zones. The results obtained with our interpolation scheme agree almost identically to those of a
self-consistent piecewise-linear treatment of the difference formulation while avoiding its additional costs. The resulting
method is capable of providing robust and accurate calculations for problems involving optically thick zones. We comment
on the monotonicity issues that arise when employing this transport method.
NTIS
Attitude (Inclination); Interpolation; Radiation Transport
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