Inclusive hadron distributions in p+p collisions from saturation models of HERA DIS data. (open access)

Inclusive hadron distributions in p+p collisions from saturation models of HERA DIS data.

Dipole models based on various saturation scenarios provide reasonable fits to small-x DIS inclusive, diffractive and exclusive data from HERA. Proton un-integrated gluon distributions extracted from such fits are employed in a k{sub {perpendicular}}-factorization framework to calculate inclusive gluon distributions at various energies. The n-particle multiplicity distribution predicted in the Glasma flux tube approach shows good agreement with data over a wide range of energies. Hadron inclusive transverse momentum distributions expressed in terms of the saturation scale demonstrate universal behavior over a wider kinematic range systematically with increasing center of mass energies.
Date: December 6, 2010
Creator: Tribedy, P. & Venugopalan, R.
Object Type: Article
System: The UNT Digital Library
Collaborative research on amine borane regeneration and market analysis of hydrogen storage materials. (open access)

Collaborative research on amine borane regeneration and market analysis of hydrogen storage materials.

This report describes Collaborative research on amine borane regeneration and market analysis of hydrogen storage materials.
Date: December 6, 2010
Creator: Schubert, David
Object Type: Report
System: The UNT Digital Library
Reaching Grid Parity Using BP Solar Crystalline Silicon Technology: A Systems Class Application (open access)

Reaching Grid Parity Using BP Solar Crystalline Silicon Technology: A Systems Class Application

The primary target market for this program was the residential and commercial PV markets, drawing on BP Solar's premium product and service offerings, brand and marketing strength, and unique routes to market. These two markets were chosen because: (1) in 2005 they represented more than 50% of the overall US PV market; (2) they are the two markets that will likely meet grid parity first; and (3) they are the two market segments in which product development can lead to the added value necessary to generate market growth before reaching grid parity. Federal investment in this program resulted in substantial progress toward the DOE TPP target, providing significant advancements in the following areas: (1) Lower component costs particularly the modules and inverters. (2) Increased availability and lower cost of silicon feedstock. (3) Product specifically developed for residential and commercial applications. (4) Reducing the cost of installation through optimization of the products. (5) Increased value of electricity in mid-term to drive volume increases, via the green grid technology. (6) Large scale manufacture of PV products in the US, generating increased US employment in manufacturing and installation. To achieve these goals BP Solar assembled a team that included suppliers of critical materials, …
Date: December 6, 2010
Creator: Cunningham, Daniel W.; Wohlgemuth, John; Carlson, David E.; Clark, Roger F.; Gleaton, Mark; Posbic, John P. et al.
Object Type: Report
System: The UNT Digital Library
Image Processing and Control of a Programmable Spatial Light Modulator for Optic Damage Protection (open access)

Image Processing and Control of a Programmable Spatial Light Modulator for Optic Damage Protection

The heart of the National Ignition Facility is a megajoule-class laser system consisting of 192 beams used to drive inertial confinement fusion reactions. A recently installed system of programmable, liquid-crystal-based spatial light modulators adds the capability of arbitrarily shaping the spatial beam profiles in order to enhance operational flexibility. Its primary intended use is for introducing 'blocker' obscurations shadowing isolated flaws on downstream optical elements that would otherwise be damaged by high fluence laser illumination. Because an improperly shaped blocker pattern can lead to equipment damage, both the position and shape of the obscurations must be carefully verified prior to high-fluence operations. An automatic alignment algorithm is used to perform detection and estimation of the imposed blocker centroid positions compared to their intended locations. Furthermore, in order to minimize the spatially-varying nonlinear response of the device, a calibration of the local magnification is performed at multiple sub-image locations. In this paper, we describe the control and associated image processing of this device that helps to enhance the safety and longevity of the overall system.
Date: December 6, 2010
Creator: Awwal, A.; Leach, R.; Brunton, G.; Tse, E.; Matone, J. & Heebner, J.
Object Type: Article
System: The UNT Digital Library
A Case for the Use of 3-D Attenuation Models in Ground Motion and Seismic Hazard Assessment (open access)

A Case for the Use of 3-D Attenuation Models in Ground Motion and Seismic Hazard Assessment

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Date: December 6, 2010
Creator: Pasyanos, M E
Object Type: Article
System: The UNT Digital Library