Bulletin of the American Physical Society
New England Section Fall 2022 Meeting
Volume 67, Number 13
Friday–Saturday, October 14–15, 2022; University of New Hampshire, Durham, NH
Session K03: Nuclear Physics |
Hide Abstracts |
Chair: Douglas Higinbotham, Jefferson Lab Room: University of New Hampshire in Durham DeMeritt Hall 240 |
Saturday, October 15, 2022 1:00PM - 1:12PM |
K03.00001: The electric polarizability of J/Psi Eric Scheuermann, Sadhana Suresh, Jan Wusik, Peter J Schweitzer
|
Saturday, October 15, 2022 1:12PM - 1:24PM |
K03.00002: Proton Spin Structure & Polarizabilities in the Strong QCD Regime David Ruth The proton’s spin structure is still not well understood, especially in |
Saturday, October 15, 2022 1:24PM - 1:36PM |
K03.00003: Tensor Polarization: A New Window into Nuclear Structure Elena A Long Whenever technological advancements provide access to a new degree of freedom, previously inaccessible quantities can be measured. Currently, we are seeing the beginning of a renaissance of experiments utilizing a tensor polarized target to probe the structure of the deuteron. This is due to two recent developments: the JLab 12 GeV upgrade, and a high-luminosity, high-tensor-polarized target. Experiments utilizing these new capabilities can explore aspects of the nature of matter that have so far proven elusive, some for decades: from 6-quark hidden-color effects in the DIS region to the short-range and high-momentum components of the deuteron wavefunction in the x>1 SRC region, and beyond. This presentation will discuss the first two experiments already approved to measure the tensor b1 and Azz observables, recent advances in tensor target development, and future opportunities to better understand nuclear and nucleon structures that are only accessible through experiments utilizing tensor polarized targets. |
Saturday, October 15, 2022 1:36PM - 1:48PM |
K03.00004: Achieving High Deuteron Tensor Polarization Using Dynamic Nuclear Polarization Allison Zec Dynamic nuclear polarization (DNP) is technique used to enhance the nuclear spin polarization of materials. DNP works by using microwaves to continuously drive spin transitions in a material that is doped with free radicals, and placed inside a 1 K environment in a high magnetic field. Once enhanced, the nuclear polarization can be determined by analyzing the lineshape of the NMR absorption spectrum. This talk will describe the DNP system used at the University of New Hampshire, and explain novel techniques in inducing high tensor polarization in deuterium. |
Saturday, October 15, 2022 1:48PM - 2:00PM |
K03.00005: DNP @ UNH: Vector and Tensor Polarization Extraction from Line-Shape Analysis Michael J McClellan The Solid Polarized Target group at UNH is developing a dynamically polarized target for use in measuring spin-structure and tensor spin observables including Azz, T20 and b1. These measurements can help distinguish between virtual nucleon and light cone nucleon-nucleon potentials; between “hard” and “soft” deuteron wave functions; and may provide an unambiguous signal for the detection of hidden color. Our lab has been successful dynamically polarizing deuterated targets such as chemically doped polymers and alcohols. Our next goal is to enhance tensor polarization to ~35%, including in deuterated ammonia. |
Saturday, October 15, 2022 2:00PM - 2:12PM |
K03.00006: Correlations of Prompt Fission Radiation in Measurements with DANCE and NEUANCE Hadrick Green, Hadrick Green The field of nuclear physics is a vast discipline, with many discoveries made, and many more opportunities for research and development. In particular, the field of nuclear data evaluation is ripe with challenging topics to tackle. Nuclear data libraries such as ENDF, ENDL, JENDL are constantly being updated and improved upon as research groups around the world collect and evaluate nuclear data. Despite the large effort, many of these libraries are still lacking information, and are often limited to basic quantities for only the most common isotopes. In the field of fission, a notable contributor to this issue is the lack of detector systems able to measure such complex quantities with adequate precision and efficiency. The Detector for Advanced Neutron Capture Experiments (DANCE) is a 4π detector array that consists of up to 160 BaF2 scintillation detectors; its design allows for high efficiency detection of prompt gamma rays following a neutron capture. The most recent release of Monte Carlo N-Particle code (MCNP®) implements fission event generators Cascading Gamma-ray Multiplicity code for Fission (CGMF) and Fission Reaction Event Yield Algorithm (FREYA) that can be paired with existing MCNP tools, such as PTRAC, to simulate and analyze fission events on an event-by-event basis. With the successful creation of a model of DANCE in MCNP, the following work will present initial analysis of fission simulations ran in MCNP using CGMF and PTRAC in the DANCE array. |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700