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Low-energy positron interactions with xenon
This article studies low-energy interactions of positrons with xenon experimentally and theoretically. Results are compared with previous literature.
Date:
December 8, 2011
Creator:
Machacek, J. R.; Makochekanwa, C.; Jones, A.C.L.; Caradonna, P.; Slaughter, D.S.; McEachran, R.P. et al.
Object Type:
Article
System:
The UNT Digital Library
Low-temperature UV photoluminescence of ion beam synthesized Si nanoclusters embedded in Si
This article explores Ultraviolet (UV) photoluminescence (PL) data taken on a double Au implanted Si matrix and studied over a wide temperature range of 28-220K. The results of this study at lower temperatures indicate the emission to be coming from Si nanoclusters (NCs) embedded in the matrix.
Date:
April 3, 2012
Creator:
Sahu, G.; Lenka, H.P.; Mahapatra, Durga P.; Rout, B. & Das, M.P.
Object Type:
Article
System:
The UNT Digital Library
Self-organizing Complex Networks: individual versus global rules
This article introduces a form of Self-organized Criticality (SOC) inspired by the new generation of evolutionary game theory, which ranges from physiology to sociology.
Date:
June 7, 2017
Creator:
Mahmoodi, Korosh; West, Bruce J. & Grigolini, Paolo
Object Type:
Article
System:
The UNT Digital Library
Black Hole Growth Is Mainly Linked to Host-galaxy Stellar Mass Rather Than Star Formation Rate
This article investigates the dependence of black hole accretion rate (BHAR) on host-galaxy star formation rate (SFR) and stellar mass in the CANDELS/GOODS-South field in the redshift range of 0.5 ⩽ z < 2.0.
Date:
June 15, 2017
Creator:
Yang, G.; Chen, C. -T. J.; Vito, F.; Brandt, William Nielsen; Alexander, David M.; Luo, Bin et al.
Object Type:
Article
System:
The UNT Digital Library
Tracing the accretion history of supermassive black holes through X-ray variability: results from the Chandra Deep Field-South
This article studies the X-ray variability properties of distant active galactic nuclei (AGNs) in the Chandra Deep Field-South region over 17 yr, up to z ~ 4, and compare them with those predicted by models based on local samples.
Date:
July 14, 2017
Creator:
Paolillo, Maurizio; Papadakis, I.; Brandt, William Nielsen; Luo, Bin; Xue, Yongquan; Tozzi, Paolo et al.
Object Type:
Article
System:
The UNT Digital Library
High-redshift AGN in the Chandra Deep Fields: the obscured fraction and space density of the sub-L∗ population
This article investigates the population of high-redshift (3≤z<6) active galactic nuclei (AGN) selected in the two deepest X-ray surveys, the 7 Ms Chandra Deep Field-South and 2 Ms Chandra Deep Field-North.
Date:
September 26, 2017
Creator:
Vito, F.; Brandt, William Nielsen; Yang, G.; Gilli, Roberto; Luo, Bin; Vignali, Christian et al.
Object Type:
Article
System:
The UNT Digital Library
Giant increase in cross-magnetic-field transport rate as an electron-positron plasma cools
The article focuses on a study of an electron-positron plasma in thermal equilibrium within a uniform magnetic field using a classical trajectory Monte Carlo simulation. The cross-magnetic-field single-particle diffusion coefficient is evaluated as a function of the magnetic field strength and plasma temperature. The transport rate is found to increase by many orders of magnitude as the plasma temperature is lowered, for a magnetic field strength of 1 T. The sharp dependence on temperature is due to electrons and positrons becoming temporarily correlated and drifting across the magnetic field before dissociating.
Date:
October 5, 2017
Creator:
Aguirre, F. F. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Exploratory X-Ray Monitoring of Luminous Radio-quiet Quasars at High Redshift: No Evidence for Evolution in X-Ray Variability
This article reports on the second installment of an X-ray monitoring project of seven luminous radio-quiet quasars (RQQs).
Date:
October 10, 2017
Creator:
Shemmer, Ohad; Brandt, William Nielsen; Paolillo, Maurizio; Kaspi, Shai; Vignali, Christian; Lira, Paulina et al.
Object Type:
Article
System:
The UNT Digital Library
An efficient and accurate framework for calculating lattice thermal conductivity of solids: AFLOW—AAPL Automatic Anharmonic Phonon Library
This article presents the Automatic Anharmonic Phonon Library.
Date:
November 17, 2016
Creator:
Plata, Jose J.; Nath, Pinku; Usanmaz, Demet; Carrete, Jesús; Toher, Cormac; de Jong, Maarten et al.
Object Type:
Article
System:
The UNT Digital Library
Quantum walks of two interacting particles on percolation graphs
This paper addresses the dynamics of two indistinguishable interacting particles moving on a dynamical percolation graph.
Date:
October 6, 2017
Creator:
Siloi, Ilaria; Benedetti, Claudia; Piccinini, Enrico; Paris, Matteo G. A. & Bordone, Paolo
Object Type:
Article
System:
The UNT Digital Library
Antihydrogen Beam Formation by Transporting an Antiproton Beam Through an Electron-Positron Plasma That Produces Magnetobound Positronium
This paper from the 2016 Conference on Application of Accelerators in Research and Industry conference proceedings describes the use of a classical trajectory simulation to study the formation of an antihydrogen beam by transporting an antiproton beam through an electron-positron plasma that produces magnetobound positronium.
Date:
October 26, 2017
Creator:
Hermosillo, M.; Thornton, E. A. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
RBS Study of a Dilute Alloy of Ga(99.8% at.):Bi(0.2% at.)
This paper from the 2016 Conference on Application of Accelerators in Research and Industry conference proceedings describes an attempt to observe an atomic bismuth monolayer with Rutherford backscattering to demonstrate the surface concentration of the bismuth over the alloy in the bulk.
Date:
October 26, 2017
Creator:
Peterson, Randolph S.; Augustine, Carlyn N.; Beriont, Griffin G.; Farr, Aidan T.; Jenkins, William T. J.; Morris, Taylor A. et al.
Object Type:
Article
System:
The UNT Digital Library
Reverberation Mapping of High-Luminosity Quasars
This article presents the CIV BLR size and luminosity relation over eight orders of magnitude in luminosity, pushing the luminosity limit to its highest point so far.
Date:
August 31, 2017
Creator:
Kaspi, Shai; Brandt, William Nielsen; Maoz, Dan; Netzer, Hagai; Schneider, Donald P. & Shemmer, Ohad
Object Type:
Article
System:
The UNT Digital Library
Charged Particle Reflection by a Planar Artificially Structured Boundary With Electrostatic Plugging
This article uses a classical trajectory Monte Carlo simulation to investigate an artificially structured boundary for confinement and control of charged particles.
Date:
November 30, 2017
Creator:
Hedlof, R. M. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Fast-Growing SMBHs in Fast-Growing Galaxies, at High Redshifts: The Role of Major Mergers as Revealed by ALMA
This article presents a long-term, multi-wavelength project to understand the epoch of fastest growth of the most massive black holes by using a sample of 40 luminous quasars at z ≃ 4.8.
Date:
September 30, 2017
Creator:
Trakhtenbrot, Benny; Lira, Paulina; Netzer, Hagai; Cicone, Claudia; Maiolino, Roberto & Shemmer, Ohad
Object Type:
Article
System:
The UNT Digital Library
Extraordinary Light-Trapping Enhancement in Silicon Solar Cell Patterned with Graded Photonic Super-Crystals
This article explores light-trapping enhancement in newly discovered graded photonic super-crystals (GPSCs) with dual periodicity and dual basis.
Date:
December 7, 2017
Creator:
Hassan, Safaa; Lowell, David; Adewole, Murthada; George, David; Zhang, Hualiang & Lin, Yuankun
Object Type:
Article
System:
The UNT Digital Library
Engineered nonlinear materials using gold nanoantenna array
This article describes the use of a gold nanoantenna array to enhance both the nonlinear refractive index and two-photon absorption (2PA) of the organic dye 4,4'-bis(diphenylamino)stilbene (BDPAS), which is known as a dye with relatively large 2PA.
Date:
August 21, 2017
Creator:
Drachev, Vladimir P.; Kildishev, Alexander V.; Borneman, Joshua D.; Chen, Kuo-Ping; Shalaev, Vladimir; Yamnitskiy, Konstantin et al.
Object Type:
Article
System:
The UNT Digital Library
Magnetic plasma expulsion
The article presents one scheme for what is referred to as magnetic plasma expulsion, which would prevent the plasma from entering a given region. Magnetic plasma expulsion techniques may allow instrumentation access to the interiors of plasmas. Magnetic plasma expulsion techniques may also make alternative approaches for magnetic plasma confinement possible. Particle-in-cell simulation with the Warp code is used to study magnetic plasma expulsion. Some conditions for achieving magnetic plasma expulsion are reported.
Date:
January 16, 2018
Creator:
Phillips, R. E. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Artificially structured boundary for confinement of effectively unmagnetized cryogenic antimatter plasmas
The article is from conference proceedings that discuss an artificially structured boundary (ABS) considered to consist of a spatially periodic arrangement of electrostatically plugged magnetic cusps. As envisioned, a non-neutral positron plasma could be confined by an ASB along its edge, and the space charge of the positron plasma would serve to confine an antiproton plasma. If the conditions of the two-species plasma are suitable, production of antihydrogen via three-body recombination for antimatter gravity studies may be possible.
Date:
January 23, 2018
Creator:
Hedlof, R. M. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Complexity and Heterogeneity in a Dynamic Network
This article presents an approximate analytical solution for the connectivity of a network model with a "non-simultaneous" linking scheme.
Date:
September 18, 2017
Creator:
Lambert, David & Vanni, Fabio
Object Type:
Article
System:
The UNT Digital Library
Complexity Measures of Music
This article presents a technique to search for the presence of crucial events in music, based on the analysis of the music volume.
Date:
August 22, 2017
Creator:
Pease, April; Mahmoodi, Korosh & West, Bruce J.
Object Type:
Article
System:
The UNT Digital Library
Gold Nanoparticles-enabled Efficient Dual Delivery of Anticancer Therapeutics to HeLa Cells
This article describes a facile one-step method to synthesize stable collodial gold nanoparticles (AuNPs) loaded with a combination of two anticancer therapeutics, -bleomycin and doxorubicin
Date:
September 20, 2017
Creator:
Farooq, Muhammad U.; Novosad, Valentyn; Rozhkova, Elena A.; Wali, Hussain; Ali, Asghar; Fateh, Ahmed A. et al.
Object Type:
Article
System:
The UNT Digital Library
Self-Organized Temporal Criticality: Bottom-Up Resilience versus Top-Down Vulnerability
This article proposes a social model of spontaneous self-organization generating criticality and resilience, called Self-Organized Temporal Criticality (SOTC).
Date:
March 26, 2018
Creator:
Mahmoodi, Korosh; West, Bruce J. & Grigolini, Paolo
Object Type:
Article
System:
The UNT Digital Library
On social sensitivity to either zealot or independent minorities
This article uses the self-organized temporal criticality (SOTC) model to identify the timing of crucial events as a new mechanism with which to generate criticality, thereby establishing a way for the internal dynamics of the decision making process to suppresss the sensitivity of social opinion to either zealot or independent minorities.
Date:
March 27, 2018
Creator:
Mahmoodi, Korosh; Grigolini, Paolo & West, Bruce J.
Object Type:
Article
System:
The UNT Digital Library