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K-shell x-ray production cross sections of selected elements from Ti to Y for 0.5- to 2.5-MeV alpha-particle bombardment (open access)

K-shell x-ray production cross sections of selected elements from Ti to Y for 0.5- to 2.5-MeV alpha-particle bombardment

This article discusses K-shell x-ray production cross sections of Ti, V, Cr, Fe, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, and Y for 0.5- to 2.5-MeV alpha particles.
Date: May 1975
Creator: McDaniel, Floyd Del. (Floyd Delbert), 1942-; Gray, Tom J. & Gardner, R. K.
Object Type: Article
System: The UNT Digital Library
Low-Velocity K-Shell Ionization Cross Sections for Protons, Deuterons and Alpha Particles Bombarding Thin Metal Targets (open access)

Low-Velocity K-Shell Ionization Cross Sections for Protons, Deuterons and Alpha Particles Bombarding Thin Metal Targets

The purpose of this work was to examine the effect of the use the assumption κω2K/ΕCM «1 in calculating K-shell ionization cross sections in the plane wave Born approximation (PWBA) where κω2K is the observed binding energy of the K-shell and ECM is the energy of the incident particle in the center of mass system. Avoiding this assumption produces a threshold for ionization at Ecm = κω2K. Calculations employing the assumption, which leads to the use of approximate limits of integration, do not go to zero for even the .Lowest values of the incident energy.
Date: May 1981
Creator: Rice, Roger Karl
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Photoconductivity Investigation of Two-Photon Magneto-Absorption, PACRH, and Deep Levels in n-InSb (open access)

Photoconductivity Investigation of Two-Photon Magneto-Absorption, PACRH, and Deep Levels in n-InSb

A high resolution photoconductivity investigation of two 13 -3 photon magneto-absorption (TPMA) in n-InSb (n - 9 x 10 cm ) has been performed. This is the first time that two-photon absorption in a semiconductor has been studied with cw lasers only. With a stable cw CC>2 laser and a highly sensitive sampling and magnetic field modulation technique, a minimum of 4 2 transitions in the TPMA photoconductivity spectra can be observed. Most of these transitions are a result of the usual spherical approximation TPMA selections rules (An =0, ±2; As = 0 for e ⊥ B and Δn = 0; Δs = 0 for e || B) . However, some transitions, in particular several near the TPMA band edge, are not explained by these rules. The TPMA spectra have been found to depend upon crystallographic orientation. This has not been previously observed. The temperature variation of the fundamental energy gap Eg between 2 and 100° K is also obtained from TPMA experiments.
Date: May 1982
Creator: Goodwin, Mike Watson
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Fast diffusion of As in polycrystalline silicon during rapid thermal annealing (open access)

Fast diffusion of As in polycrystalline silicon during rapid thermal annealing

This article discusses fast diffusion of As in polycrystalline silicon during rapid thermal annealing.
Date: May 30, 1984
Creator: Wilson, Scott R.; Paulson, W. M.; Gregory, R. B.; Gressett, J. D.; Hamdi, A. H. & McDaniel, Floyd Del. (Floyd Delbert), 1942-
Object Type: Article
System: The UNT Digital Library
Carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons (open access)

Carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons

Article discussing research on carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons.
Date: May 1, 1987
Creator: Bhalla, R. P.; McDaniel, Floyd Del. (Floyd Delbert), 1942- & Lapicki, Gregory
Object Type: Article
System: The UNT Digital Library
Fabrication of silicon-based optical components for an ultraclean accelerator mass spectronomy negative ion source (open access)

Fabrication of silicon-based optical components for an ultraclean accelerator mass spectronomy negative ion source

Article discussing the fabrication of silicon-based optical components for an ultraclean accelerator mass spectonomy negative ion source.
Date: May 1994
Creator: Kirchhoff, J. F.; Marble, D. K.; Weathers, Duncan L.; McDaniel, Floyd Del. (Floyd Delbert), 1942-; Matteson, Samuel E.; Anthony, J. M. et al.
Object Type: Article
System: The UNT Digital Library
The observation of silicon nanocrystals in siloxene (open access)

The observation of silicon nanocrystals in siloxene

This article discusses the observation of silicon nanocrystals in siloxene using high resolution transmission electron microscopy.
Date: May 1, 1994
Creator: Pinizzotto, Russell F.; Yang, H.; Pérez, José M. & Coffer, J. L.
Object Type: Article
System: The UNT Digital Library
On the period of VY Ursae Majoris (open access)

On the period of VY Ursae Majoris

This article contains visual observation data of the carbon star VY Ursae Majoris.
Date: May 25, 1994
Creator: Ofek, Efran; Shemmer, Ohad & Gabzo, Ofer
Object Type: Article
System: The UNT Digital Library
Atomic resolution ultrahigh vacuum scanning tunneling microscopy of epitaxial diamond (100) films (open access)

Atomic resolution ultrahigh vacuum scanning tunneling microscopy of epitaxial diamond (100) films

Article discussing research on atomic resolution ultrahigh vacuum scanning tunneling microscopy of epitaxial diamond (100) films.
Date: May 1, 1995
Creator: Stallcup, Richard E.; Aviles, A. F. & Pérez, José M.
Object Type: Article
System: The UNT Digital Library
Collision-Induced Interaction Cross Sections of 1-7 Mev B₂ Ions Incident on an N₂ Gas Target (open access)

Collision-Induced Interaction Cross Sections of 1-7 Mev B₂ Ions Incident on an N₂ Gas Target

This article describes the measurement of collision-induced interaction cross sections for 1-7 MeV diatomic boron molecular ions incident on a nitrogen gas target by using a differentially pumped gas cell.
Date: May 5, 1995
Creator: Kim, Y. D.; Jin, J. Y.; Matteson, Samuel E.; Weathers, Duncan L.; Anthony, J. M.; Marshall, Paul et al.
Object Type: Article
System: The UNT Digital Library
Fluctuation-Dissipation Process Without a Time Scale (open access)

Fluctuation-Dissipation Process Without a Time Scale

Article discussing the fluctuation-dissipation process without a time scale.
Date: May 2000
Creator: Annunziato, Mario; Grigolini, Paolo & Riccardi, Juri
Object Type: Article
System: The UNT Digital Library
Theoretical STM signatures and transport properties of native defects in carbon nanotubes (open access)

Theoretical STM signatures and transport properties of native defects in carbon nanotubes

Article on theoretical STM signatures and transport properties of native defects in carbon nanotubes.
Date: May 15, 2000
Creator: Orlikowski, Daniel; Buongiorno Nardelli, Marco; Bernholc, Jerry & Roland, Christopher
Object Type: Article
System: The UNT Digital Library
Power-Law Time Distribution of Large Earthquakes (open access)

Power-Law Time Distribution of Large Earthquakes

Article discussing power-law time distribution of large earthquakes and a study of the statistical properties of time distribution of seismicity in California by means of diffusion entropy.
Date: May 2003
Creator: Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.
Object Type: Article
System: The UNT Digital Library
Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051 (open access)

Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051

This article presents the results of a dense and intensive X-ray and optical monitoring of the narrow-line Seyfert 1 galaxy NGC 4051 carried out in 2000.
Date: May 6, 2003
Creator: Shemmer, Ohad; Uttley, P.; Netzer, Hagai & McHardy, I.M.
Object Type: Article
System: The UNT Digital Library
Erratum: First-Principles Theory of Correlated Transport through Nanojunctions [Phys. Rev. Lett. 94, 116802 (2005)] (open access)

Erratum: First-Principles Theory of Correlated Transport through Nanojunctions [Phys. Rev. Lett. 94, 116802 (2005)]

This article provides the correction of an equation that was misprinted in Physical Review Letters 94, 116802 (2005).
Date: May 6, 2005
Creator: Ferretti, A.; Calzolari, Arrigo; Di Felice, Rosa; Manghi, Franca; Caldas, Marilia J.; Buongiorno Nardelli, Marco et al.
Object Type: Article
System: The UNT Digital Library
The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei (open access)

The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei

This article contains a detailed investigation of moderate- to high-quality X-ray spectra of 10 of the most luminous active galactic nuclei known at z > 4.
Date: May 20, 2005
Creator: Shemmer, Ohad; Brandt, William Nielsen; Vignali, Christian; Schneider, Donald P.; Fan, Xiaohui; Richards, Gordon T. et al.
Object Type: Article
System: The UNT Digital Library
Nucleation of β-FeSi2 nanostructures at pinned step bunches on the Si(111) surface (open access)

Nucleation of β-FeSi2 nanostructures at pinned step bunches on the Si(111) surface

This article discusses nucleation of β-FeSi2 nanostructures at pinned step bunches on the Si(111) surface.
Date: May 24, 2005
Creator: Brady, Ryan P.; Sharma, A. S.; Giblet, R. L.; Cottier, Ryan J.; Golding, Terry D. & Pérez, José M.
Object Type: Article
System: The UNT Digital Library
The X-Ray Properties of the Most Luminous Quasars From the Sloan Digital Sky Survey (open access)

The X-Ray Properties of the Most Luminous Quasars From the Sloan Digital Sky Survey

This article studies the X-ray properties of a representative sample of 59 of the most optically luminous quasars in the universe spanning a redshift range of z ≈ 1.5-4.5.
Date: May 18, 2007
Creator: Just, Dennis W.; Brandt, William Nielsen; Shemmer, Ohad; Steffen, Aaron; Schneider, Donald P.; Chartas, George et al.
Object Type: Article
System: The UNT Digital Library
Star Formation in the Hosts of High-z QSOs: Evidence from Spitzer PAH Detections (open access)

Star Formation in the Hosts of High-z QSOs: Evidence from Spitzer PAH Detections

This article presents Spitzer rest frame mid-infrared spectroscopy of 12z~2 millimeter-bright type 1 QSOs.
Date: May 17, 2008
Creator: Lutz, Dieter; Sturm, Eckhard; Tacconi, Linda; Valiante, Elisabetta; Schweitzer, Mario; Netzer, Hagai et al.
Object Type: Article
System: The UNT Digital Library
Femtosecond wave-packet dynamics in cesium dimers studied through controlled stimulated emission (open access)

Femtosecond wave-packet dynamics in cesium dimers studied through controlled stimulated emission

Article on femtosecond wave-packet dynamics in cesium dimers studied through controlled stimulated emission.
Date: May 12, 2010
Creator: Yuan, Luqi; Ariunbold, Gombojav O.; Murawski, Robert K.; Pestov, Dmitry; Wang, Xi; Patnaik, Anil K. et al.
Object Type: Article
System: The UNT Digital Library
The Chandra Deep Field-South Survey: 4 Ms Source Catalogs (open access)

The Chandra Deep Field-South Survey: 4 Ms Source Catalogs

This article presents source catalogs for the 4 Ms Chandra Deep Field-South.
Date: May 24, 2011
Creator: Xue, Yongquan; Luo, Bin; Brandt, William Nielsen; Bauer, Franz E.; Lehmer, Bret; Broos, Patrick et al.
Object Type: Article
System: The UNT Digital Library
Transmission of Information Between Complex Systems: 1/ f resonance (open access)

Transmission of Information Between Complex Systems: 1/ f resonance

In this article, the authors study the transport of information between two complex systems with similar properties.
Date: May 31, 2011
Creator: Aquino, Gerardo; Bologna, Mauro; West, Bruce J. & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Neural Dynamics: Criticality, Cooperation, Avalanches and Entrainment between Complex Networks (open access)

Neural Dynamics: Criticality, Cooperation, Avalanches and Entrainment between Complex Networks

Book chapter discussing neural dynamics and the criticality, cooperation, avalanches and entrainment between complex networks.
Date: May 22, 2012
Creator: Grigolini, Paolo; Zare, Marzieh; Svenkeson, Adam & West, Bruce J.
Object Type: Book Chapter
System: The UNT Digital Library
Comparative Trace Elemental Analysis in Cancerous and Noncancerous Human Tissues Using PIXE (open access)

Comparative Trace Elemental Analysis in Cancerous and Noncancerous Human Tissues Using PIXE

Article discussing comparative trace elemental analysis in cancerous and noncancerous human tissues using PIXE.
Date: May 16, 2013
Creator: Mulware, Stephen Juma
Object Type: Article
System: The UNT Digital Library