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The Chiral Magnetic Effect In Heavy Ion Collisions From Hydrodynamic Simulations, Elias Lilleskov 2017 Macalester College, Indiana University

The Chiral Magnetic Effect In Heavy Ion Collisions From Hydrodynamic Simulations, Elias Lilleskov

Macalester Journal of Physics and Astronomy

The quark-gluon plasma created in heavy ion collisions is an exotic state of matter in which many unusual phenomena are manifested. One such phenomenon is the "Chiral-Magnetic Effect" (CME), wherein the powerful magnetic fields generated by colliding ions spin-polarize chiral quarks, causing a net transport effect in the direction of the fields. The CME predicts specific charge-dependent correlation observables, for which experimental evidence was reported, although the evidence is subject to background contamination. Isobaric collision experiments have been planned for 2018 at RHIC, which will study this effect by comparing 96Ru-96Ru and 96Zr-96Zr collisions. The two colliding systems are expected ...


Measurement Of Long-Range Angular Correlations And Azimuthal Anisotropies In High-Multiplicity P+Au Collisions At √Snn=200 Gev, C. Aidala, Nicole J. Apadula, John C. Hill, Nels J. Hotvedt, John G. Lajoie, Alexandre Lebedev, Craig Ogilvie, Milap R. Patel, Joshua Perry, Timothy T. Rinn, Marzia Rosati, Jonathan C. Runchey, Abhisek Sen, M. Shimomura, Arbin Timilsina, et al. 2017 University of Michigan

Measurement Of Long-Range Angular Correlations And Azimuthal Anisotropies In High-Multiplicity P+Au Collisions At √Snn=200 Gev, C. Aidala, Nicole J. Apadula, John C. Hill, Nels J. Hotvedt, John G. Lajoie, Alexandre Lebedev, Craig Ogilvie, Milap R. Patel, Joshua Perry, Timothy T. Rinn, Marzia Rosati, Jonathan C. Runchey, Abhisek Sen, M. Shimomura, Arbin Timilsina, Et Al.

Physics and Astronomy Publications

We present measurements of long-range angular correlations and the transverse momentum dependence of elliptic flow v2 in high-multiplicity p+Au collisions at √sNN=200 GeV. A comparison of these results to previous measurements in high-multiplicity d+Au and 3He+Au collisions demonstrates a relation between v2 and the initial collision eccentricity ɛ2, suggesting that the observed momentum-space azimuthal anisotropies in these small systems have a collective origin and reflect the initial geometry. Good agreement is observed between the measured v2 and hydrodynamic calculations for all systems, and an argument disfavoring theoretical explanations based on initial momentum-space domain correlations is presented ...


Measurement Of The Relative Yields Of Ψ(2s) To Ψ(1s) Mesons Produced At Forward And Backward Rapidity In P+P, P+Al, P+Au, And 3he+Au Collisions At √Snn=200 Gev, Andrew Adare, Nicole Apadula, Sarah C. Campbell, John C. Hill, Nels J. Hotvedt, John G. Lajoie, Alexandre Lebedev, Craig Ogilvie, Milap R. Patel, Joshua Perry, Timothy T. Rinn, Marzia Rosati, Jonathan C. Runchey, Abhisek Sen, M. Shimomura, Arbin Timilsina, et al. 2017 University of Colorado, Boulder

Measurement Of The Relative Yields Of Ψ(2s) To Ψ(1s) Mesons Produced At Forward And Backward Rapidity In P+P, P+Al, P+Au, And 3he+Au Collisions At √Snn=200 Gev, Andrew Adare, Nicole Apadula, Sarah C. Campbell, John C. Hill, Nels J. Hotvedt, John G. Lajoie, Alexandre Lebedev, Craig Ogilvie, Milap R. Patel, Joshua Perry, Timothy T. Rinn, Marzia Rosati, Jonathan C. Runchey, Abhisek Sen, M. Shimomura, Arbin Timilsina, Et Al.

Physics and Astronomy Publications

The PHENIX Collaboration has measured the ratio of the yields of ψ(2S) to ψ(1S) mesons produced in p+p, p+Al, p+Au, and 3He+Au collisions at √sNN=200 GeV over the forward and backward rapidity intervals 1.2<|y|<2.2. We find that the ratio in p+p collisions is consistent with measurements at other collision energies. In collisions with nuclei, we find that in the forward (p-going or 3He-going) direction, the relative yield of ψ(2S) mesons to ψ(1S) mesons is consistent with the value measured in p+p collisions. However, in the backward (nucleus-going) direction, the ψ(2S)meson is preferentially suppressed by a factor of ∼2. This suppression is attributed in some models to the breakup of the weakly bound ψ(2S) meson through final-state interactions with comoving particles, which have a higher density in the nucleus-going direction. These breakup effects may compete with color screening in a deconfined quark-gluon plasma to produce sequential suppression of excited quarkonia states.


Jisp16 Nucleon-Nucleon Interaction Software, A. M. Shirokov, James P. Vary, Scott Bogner, Daniel Gogny, Alexander I. Mazur, Evgeniy A. Mazur, Gianina Alina Negoita, Thomas Weber 2017 Iowa State University

Jisp16 Nucleon-Nucleon Interaction Software, A. M. Shirokov, James P. Vary, Scott Bogner, Daniel Gogny, Alexander I. Mazur, Evgeniy A. Mazur, Gianina Alina Negoita, Thomas Weber

Energy Datasets

Fortran subroutine that generates harmonic oscillator matrix elements of the nucleon-nucleon interaction JISP16 is provided.


Verifying The Implementation Of An Anisotropic Grain Boundary Energy Model In Idaho National Lab’S Marmot, John-Michael H. Bradley, Evan D. Hansen, Jarin C. French, Yongfeng Zhang (Mentor) 2017 Brigham Young University Idaho

Verifying The Implementation Of An Anisotropic Grain Boundary Energy Model In Idaho National Lab’S Marmot, John-Michael H. Bradley, Evan D. Hansen, Jarin C. French, Yongfeng Zhang (Mentor)

Idaho Conference on Undergraduate Research

This work aims to verify the correct implementation of an anisotropic grain boundary (GB) energy model for face-centered cubic (FCC) and fluorite materials in Idaho National Laboratory’s phase field fuel performance code MARMOT. The model was recently implemented in MARMOT with the purpose of enabling higher fidelity simulations of UO2 nuclear fuels. As part of verification, tests were performed to measure the energy dependence on misorientation of high symmetry GBs in an FCC metal (Cu). The energies of the [100], [110], and [111] twist boundaries result as predicted, as do the energies of the [111] symmetric tilt boundaries ...


On Marie Curie And Me, Sharon L. Stephenson 2017 Gettysburg College

On Marie Curie And Me, Sharon L. Stephenson

Physics and Astronomy Faculty Publications

When people discover I am a nuclear physicist, they often say, "Oh, like Marie Curie!" And yes, I am like Marie in that I have woman parts, I study nuclei, I have two children and a physicist husband. But had I lived in her time, I would not have been that rare female admitted to the Sorbonne. I could not have quietly made the top scores on the math and physics examinations. I am impulsive and thin-skinned, my occasional cleverness passing for deeper talent. I would probably have been a cleaning girl, pregnant at 15, unable to speak any language ...


A Search For Double Beta Decay Of Xenon To Excited States Of Barium With Exo-200, Sereres Johnston 2017 University of Massachusetts Amherst

A Search For Double Beta Decay Of Xenon To Excited States Of Barium With Exo-200, Sereres Johnston

Doctoral Dissertations May 2014 - current

This thesis presents searches for several modes of double beta decays of 136Xe to two low-lying excited levels of 136Ba. For each final level, both 2ν and 0ν double beta decay processes are considered. The data and general techniques developed by the EXO-200 collaboration are used, including a Machine Learning process to improve sensitivity in multivariate space. EXO-200 is an experimental program searching for 0νββ decay in a time projection chamber filled with 175 kg of liquid Xenon enriched to 80% 136Xe, functioning as both source and detector. Experimental searches of double beta decay with 136Xe and other isotopes are ...


A First Experimental Limit On The Relative Rates Of Muon Capture On Deuterium From The Quartet And Doublet Hyperfine Spin States Of The Μd Atom, Ray Kreswell Neely 2017 University of Kentucky

A First Experimental Limit On The Relative Rates Of Muon Capture On Deuterium From The Quartet And Doublet Hyperfine Spin States Of The Μd Atom, Ray Kreswell Neely

Theses and Dissertations--Physics and Astronomy

The MuSun experiment will determine the muon capture rate on deuterium (µ− + dn + n + νµ) from the doublet hyperfine spin state, Λd, of muonic deuterium to a precision of 1.5%. Muon capture can occur from either the quartet or doublet state of the 1S orbital of the µd atom; however, the V-A nature of the process strongly suppresses the rate of capture from the quartet state, Λq. Muons in ultrapure deuterium gas may also catalyze d+d3He+n fusion through the formation of dµd molecules.

Using neutron data from run 6 of the ...


The Development Of A Sampling Hadronic Calorimeter For The Sphenix Collaboration And The Detection Of Event Pile-Up At Phenix, Sebastian F. Vazquez-Carson 2017 University of Colorado Boulder

The Development Of A Sampling Hadronic Calorimeter For The Sphenix Collaboration And The Detection Of Event Pile-Up At Phenix, Sebastian F. Vazquez-Carson

Undergraduate Honors Theses

The sPHENIX detector at RHIC will contain an electromagnetic and a hadronic calorimeter used for the detection of particles in jets from heavy ion collisions. The hadronic calorimeter will be composed of layers of steel plates that are alternated with plastic scintillators. Within the scintillator panels, wavelength shifting fiber optic cables are embedded and coupled to silicon photo multipliers (SiPMs). The signal from the SiPMs pass through a preamp that shapes and amplifies the signal before passing it to an analog to digital converter (ADC) from which the energy deposited in the scintillator is determined. The scintillator panels are manufactured ...


Flow Of A Quark-Gluon Plasma In Relativistic Light-Ion Collisions, Ryan Weller 2017 University of Colorado, Boulder

Flow Of A Quark-Gluon Plasma In Relativistic Light-Ion Collisions, Ryan Weller

Undergraduate Honors Theses

Relativistic viscous hydrodynamics has been successful in describing the quark-gluon plasma formed in collisions between heavy ions at RHIC and the LHC. Recently, experiments on proton-proton collisions at the LHC have provided evidence that collisions involving light ions may likewise be amenable to a hydrodynamic description. In order to test such a description, I simulate p+p, central p+Pb, and central Pb+Pb collisions at center-of-mass energies of 5.02 TeV using the superSONIC model, which combines strongly-coupled pre-equilibrium flow, 2+1D relativistic viscous hydrodynamics, and late-stage hadronic rescatterings. The initial conditions for hydrodynamics are generated using a Monte ...


The Study Of Flow And Non-Flow Effects In Small Collision Systems, Pengqi Yin 2017 University of Colorado, Boulder

The Study Of Flow And Non-Flow Effects In Small Collision Systems, Pengqi Yin

Undergraduate Honors Theses

Recent research at RHIC and the LHC suggests that a quark-gluon plasma (QGP) can also be formed in the collisions of small systems (e.g., d+Au, p+Pb). In large collision systems (e.g., Au+Au, Pb+Pb), the effect of flow in the QGP is large compared to other contributions, the so-called "non-flow'' effects. However, in small collision systems, these non-flow effects are more dominant and must be better understood in order to extract the real flow signal from the data.

In this thesis, I present calculations of elliptic flow v_2--- the second-order momentum anisotropy coefficient--- in d ...


The Frontiers Of Technology In Warhead Verification, Henrietta N. Toivanen 2017 Claremont McKenna College

The Frontiers Of Technology In Warhead Verification, Henrietta N. Toivanen

CMC Senior Theses

How might new technical verification capabilities enhance the prospects of success in future nuclear arms control negotiations? Both theory and evidence suggest that verification technologies can influence the dynamics of arms control negotiations by shaping and constraining the arguments and strategies that are available to the involved stakeholders. In the future, new technologies may help transcend the specific verification challenge of high-security warhead authentication, which is a verification capability needed in future disarmament scenarios that address fewer warheads, limit new categories of warheads, and involve nuclear weapons states other than the United States and Russia. Under these circumstances, the core ...


Table Of Contents, 2016 University of Tennessee, Knoxville

Table Of Contents

International Journal of Nuclear Security

No abstract provided.


Letter From The Editor, 2016 University of Tennessee, Knoxville

Letter From The Editor

International Journal of Nuclear Security

No abstract provided.


Nuclear Power: Black Sky Liability Or Black Sky Asset?, Sherrell R. Greene 2016 Advanced Technology Insights, LLC (ATI)

Nuclear Power: Black Sky Liability Or Black Sky Asset?, Sherrell R. Greene

International Journal of Nuclear Security

Ready access to abundant electricity is a key enabler of modern life. During the past decade the vulnerability of Critical Infrastructure sectors in the U.S. to a variety of natural hazards and man-made threats has become increasingly apparent. The electrical infrastructure (the “Grid”) is the foundation for all other critical civil infrastructures upon which our society depends. Therefore, protection of the Grid is an energy security, homeland security, and national security issue of highest importance. Geomagnetic disturbances (GMD) induced by solar coronal mass ejections (CMEs), electromagnetic pulse (EMP) attacks, and cyber attacks are three events having the potential to ...


Implementation Of The 1995 Middle East Resolution: A Vital Lifeline To The Extension And Success Of The Non-Proliferation Treaty, Haidy Y. Ghoname, Howard Lewis Hall 2016 Institute of Nuclear Security, University of Tennessee - Knoxville

Implementation Of The 1995 Middle East Resolution: A Vital Lifeline To The Extension And Success Of The Non-Proliferation Treaty, Haidy Y. Ghoname, Howard Lewis Hall

International Journal of Nuclear Security

This study highlights the core non-proliferation dilemmas we face and suggests an effective mechanism for reviving the spirit and the hope of the Non-Proliferation Treaty. An indispensable key to the treaty calls for a rethinking of what we believe should be referred to as its four pillars: disarmament, non-proliferation, peaceful uses of nuclear energy, and implementation of the 1995 Middle East Resolution. We seek to contribute to the renaissance of the non-proliferation regime by addressing seven dilemmas that arise from the way various Non-Proliferation Treaty participants pursue the goals of the four pillars undergirding the treaty. This study highlights core ...


Modern Advancements In Post-Detonation Nuclear Forensic Analysis, S. Adam Stratz, Jonathan A. Gill, John D. Auxier II, Howard L. Hall 2016 University of Tennessee, Knoxville

Modern Advancements In Post-Detonation Nuclear Forensic Analysis, S. Adam Stratz, Jonathan A. Gill, John D. Auxier Ii, Howard L. Hall

International Journal of Nuclear Security

Deterring nuclear terrorism is a critical national asset to support the preclusion of non-state actors from initiating a nuclear attack on the United States. Successful attribution of a detonated nuclear weapon allows for timely responsive measures that prove essential in the period following a nuclear event. In conjunction with intelligence and law enforcement evidence, the technical nuclear forensics (TNF) post-detonation community supports this mission through the development and advancement of expertise to characterize weapon debris through a rapid, accurate, and detailed approach. Though the TNF field is young, numerous strides have been made in recent years toward a more robust ...


Student Competition Cover, 2016 University of Tennessee, Knoxville

Student Competition Cover

International Journal of Nuclear Security

No abstract provided.


A New Pathway To Enhance The Nuclear Security Regime, Francesca Giovannini 2016 American Academy of Arts and Sciences

A New Pathway To Enhance The Nuclear Security Regime, Francesca Giovannini

International Journal of Nuclear Security

The paper investigates the approach used by a new set of regional institutions, the Disaster Preparedness and Risk Management Organizations (DPRMOs), in strengthening regional governance and cooperation. It also inquires in what ways these new institutions might indirectly contribute to the establishment of a more cohesive global nuclear security framework. More specifically, through the examination of the case of Southeast Asia, the paper argues that these institutions, albeit without a specific and direct mandate to operate in the nuclear security domain, are fundamentally strengthening states’ capacity to assess risks and threats and to map vulnerabilities in timely fashion. They are ...


Evaluation Of Covert Plutonium Production From Unconventional Uranium Sources, Ondrej Chvala, Steven Skutnik, Tyrone Christopher Harris, Emily Anne Frame 2016 University of Tennessee

Evaluation Of Covert Plutonium Production From Unconventional Uranium Sources, Ondrej Chvala, Steven Skutnik, Tyrone Christopher Harris, Emily Anne Frame

International Journal of Nuclear Security

The potential for a relatively non-advanced nation to covertly acquire a significant quantity of weapons-grade plutonium using a gas-cooled, natural uranium-fueled reactor based on relatively primitive early published designed is evaluated in this article. The economic and technical issues that would influence the design decisions of a covert 239Pu production program are considered.

Several unconventional uranium acquisition approaches were explored. Methods for extracting uranium from enrichment tails, seawater, and coal ash sources were considered. The evaluation indicated that uranium extraction from coal ash or insitu leaching from underground deposits could be performed in economical manner that might be difficult ...


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