Bulletin of the American Physical Society
2021 Fall Meeting of the APS Division of Nuclear Physics
Volume 66, Number 8
Monday–Thursday, October 11–14, 2021; Virtual; Eastern Daylight Time
Session EK: Nuclear Reactions |
Hide Abstracts |
Chair: Ramona Vogt, LLNL/UC Davis Room: Arlington |
Tuesday, October 12, 2021 11:45AM - 11:57AM |
EK.00001: Di-hadron azimuthal correlations in e-A DIS with CLAS Sebouh J Paul We present a measurement of the nuclear dependence of di-hadron production in deep inelastic scattering off nuclei using the CLAS detector at Jefferson Lab. We report results on the conditional suppression factor for charged pions using carbon, iron and lead data. By comparing our results with single-hadron measurements, we can constrain correlations created by nuclear effects. Our results are much more precise than the HERMES data (PRL 96, 162301) and include hadron identification. We also complement the HERMES measurements by reporting the first measurement of azimuthal and rapidity correlations in DIS, which shows a strong suppression for back-to-back pion pairs in nuclei, whereas there is an enhancement for such pairs where the azimuthal and rapidity separations are both small. This represents a new type of study in electron-nucleus collisions and serves as a pathfinder for future experiments with CLAS12 and the Electron-Ion Collider. |
Tuesday, October 12, 2021 11:57AM - 12:09PM |
EK.00002: Differential cross-section measurements of the 18O(γ,n) + 18O(γ,2n) reactions at 23.7 and 32.0 MeV Collin R Malone, Calvin R Howell, Werner Tornow, Ronald C Malone, Forrest Q Friesen, Mohammad W Ahmed, Benjamin J Crowe, Diane M Markoff, Arnoldas Deltuva Photoneutron reactions on Oxygen-18 offer an opportunity to examine the neutron-neutron interaction and may be used as a surrogate reaction for planning a tritium photodisintegration experiment at the Triangle Universities Nuclear Laboratory (TUNL). The relatively large 18O(γ,2n) reaction cross section allows measurements of differential cross-section data for neutron-neutron coincidences at various opening angles between the neutrons similar to the 3H(γ,nn) reaction without the risks associated with handling a radioactive gas target. Cross sections for the sequential and simultaneous emission of the two neutrons in the 18O(γ, nn) reaction are measured. The simultaneous neutron emission provides information about neutron-neutron correlations in the 18O nucleus. |
Tuesday, October 12, 2021 12:09PM - 12:21PM |
EK.00003: Feasibility Study of Λd Elastic Scattering in Data From Photoproduction Off Deuteron Brandon S Tumeo, Yordanka Ilieva, Nicholas Zachariou, Pawel A Nadel-Turonski
|
Tuesday, October 12, 2021 12:21PM - 12:33PM |
EK.00004: Abstract Withdrawn
|
Tuesday, October 12, 2021 12:33PM - 12:45PM |
EK.00005: First Demonstration of a Triton Beam Using Target Normal Sheath Acceleration Arnold K Schwemmlein, Chad Forrest, Walter Shmayda, Christian Stoeckl, Sean P Regan, Udo Schroeder In a novel experiment, a triton beam was generated via the target normal sheath acceleration (TNSA) mechanism. Tritium gas was diffused at 200°C into 500 x 500 x 25-µm3 titanium targets, which were irradiated at an on-target intensity of 2*1018 W/cm2 with the high-energy (1250-kJ), short-pulse (10-ps) OMEGA EP laser. The produced ion pulses contained ~1012 tritons with an exponentially decreasing spectrum up to ~10 MeV, comparable to other TNSA experiments with protons. This triton beam was directed onto a secondary deuterated polyethylene target, which produced 108 neutrons from deuterium–tritium fusion nuclear reactions. Further experiments are planned to investigate the T(t,2n)α reaction, which is of high interest for the study of few-nucleon systems, in particular 6He. Applications in the di-neutron transfer reactions 7Li(t,p)9Li and 9Be(t,p)11Be will be discussed. |
Tuesday, October 12, 2021 12:45PM - 12:57PM |
EK.00006: Portable Document Format Nuclear Data Library Boris Pritychenko, Viktor Zerkin, Joann Totans, Alexander Rodionov, Georgiy I Shulyak Current needs of nuclear science and technology include complete, well-documented and easily-verifiable nuclear data records. The complete data records require supporting nuclear bibliography, presently stored in dedicated libraries, in addition, to actual data. The complementary library materials often represent a bottleneck for the worldwide support of research, and nuclear data compilation, evaluation and dissemination activities. The evolution of Web and nuclear database technologies at the Brookhaven National Laboratory and International Atomic Energy Agency paved an avenue for creation of a portable data library using the Experimental nuclear reaction data (EXFOR) and Nuclear Science References (NSR) database contents. Bibliography materials in the both organizations were scanned in a Portable Document Format (PDF) and stored in relational databases. |
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