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Confinement of antiprotons in the electrostatic space charge of positrons in a model of the ALPHA antihydrogen trap

Description: This article details the equilibrium of a positron plasma in a model of the ALPHA apparatus that is computed using a finite-difference method. The positron plasma in the model extends to axial magnetic mirrors in absence of an octupole field. Formation of a three-dimensional electrostatic potential well is found to occur self-consistently. Well depths under various conditions are evaluated. Also, the equilibrium with an antiproton plasma confined in the potential well is computed.
Date: March 17, 2016
Creator: Lane, Ryan A. & Ordonez, Carlos A.
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Partner: UNT College of Arts and Sciences
open access

Nanoimprinted plasmonic nanocavity arrays

Description: This article demonstrates high resonant absorption of visible light with a plasmonic nanocavity chain structure fabricated through resistless nanoimprinting in metal (RNIM).
Date: June 17, 2013
Creator: Kim, Sangsik; Xuan, Yi; Drachev, Vladimir P.; Varghese, Leo T.; Li, Fan; Qi, Minghao et al.
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Partner: UNT College of Arts and Sciences
open access

Entropy Balance in the Expanding Universe: A Novel Perspective

Description: The article describes cosmic expansion as correlated with the standpoints of local observers’ co-moving horizons. In keeping with relational quantum mechanics, which claims that quantum systems are only meaningful in the context of measurements, the authors suggest that information gets ergodically “diluted” in our isotropic and homogeneous expanding Universe, so that an observer detects just a limited amount of the total cosmic bits.
Date: April 17, 2019
Creator: Tozzi, Arturo & Peters, James F.
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Partner: University of North Texas
open access

Comment on "Modification of graphene properties due to electron-beam irradiation"

Description: This article gives comment to a previous article entitled 'Modification of graphene properties due to electron-beam irradiation'. These articles discuss the modification of graphene properties due to electron-beam irradiation.
Date: December 17, 2009
Creator: Jones, Jason D.; Ecton, Philip A.; Mo, Yudong & Pérez, José M.
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Partner: UNT College of Arts and Sciences
open access

Effects of O2, Ar, and H2 gases on the field-emission properties of single-walled and multiwalled carbon nanotubes

Description: In this article, the authors compare the effects of O2, Ar, and H2 gases on the field-emission (FE) properties of single-walled carbon nanotubes (SWNTs) and multiwalled carbon nanotubes (MWNTs).
Date: September 17, 2001
Creator: Wadhawan, Atul; Stallcup, Richard E.; Stephens, Kenneth F.; Pérez, José M. & Akwani, Ikerionwu A.
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Partner: UNT College of Arts and Sciences
open access

Spatially Periodic Electromagnetic Force Field For Plasma Confinement and Control

Description: In this article, a theoretical understanding is developed of the single-particle reflection properties of a force field, considering the incident charged particles to have a non-drifting, isotropic velocity distribution. Classical trajectory Monte Carlo simulations and analytical modeling are employed. The initiation of an experimental effort to study force fields is described.
Date: April 17, 2012
Creator: Ordonez, Carlos A.; Pacheco, J. L. & Weathers, Duncan L.
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Partner: UNT College of Arts and Sciences
open access

ARKENSTONE – I. A novel method for robustly capturing high specific energy outflows in cosmological simulations

Description: Article describes how ARKENSTONE is a new model for multiphase, stellar feedback-driven galactic winds designed for inclusion in coarse resolution cosmological simulations. In this first paper of a series, the authors describe the features that allow ARKENSTONE to properly treat high specific energy wind components and demonstrate them using idealized non-cosmological simulations of a galaxy with a realistic circumgalactic medium (CGM) using the AREPO code.
Date: October 17, 2023
Creator: Smith, Matthew C.; Fielding, Drummond B.; Bryan, Greg L.; Kim, Chang-Goo; Ostriker, Eve C.; Somerville, Rachel S. et al.
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Partner: UNT College of Science
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