Nuclear Physics Forum
The LBNL Nuclear Physics Forum (NP Forum) is a weekly (more or less) seminar series covering topics in low-energy nuclear science, including nuclear structure, nuclear chemistry and heavy element research, applied physics and much more. The NP Forum series involves the nuclear structure group, heavy element research group and research groups from the UC Berkeley campus. NP Forums are typically scheduled for 11am on Thursdays in the Building 88 2nd floor conference room area, with refreshments (coffee + cookies) available from 10:45am.
2020/2021 Pandemic NP Forum Series
Wednesday, February 20, 2019, 11:00 AM
Prof. Michael Block, GSI Helmholtzzentrum fur Schwerionenforschung
"Precision Measurements in the Region of the Heaviest Elements"
Thursday, February 28, 2019, 11:00 AM
Dr. Boris Pritychenko, NNDC, Brookhaven National Laboratory
"New Approach for Determination of Stellar Nucleosynthesis Abundances"
Thursday, March 21, 2019, 11:00 AM
Dr. Darren Bleuel, Lawrence Livermore National Laboratory
"Neutrons at the 88-Inch Cyclotron"
Thursday, May 2, 2019, 11:00 AM
Dr. Alex Zylstra, Lawrence Livermore National Laboratory
"Studying Nuclear Astrophysics with Laser-Generated High-Energy-Density Plasmas"
Friday, May 17, 2019, 11:00 AM
Prof. Umesh Garg, University of Notre Dame
"Nuclear Incompressibility: How Collective Excitation Modes of a Nucleus Characterize Astrophysical Processes"
Thursday, May 23, 2019, 10:00 AM
Dr. Jack Henderson, Lawrence Livermore National Laboratory
"Nuclear Collectivity and Deformation"
Thursday, November 14, 2019, 11:00 AM
Prof. Alfredo Poves
"Shape Coexistence and Islands of Inversion"
Tuesday, December 10, 2019, 11:00 AM
Dr. Bethany Goldblum, University of California Berkeley
"Nuclear Science for National Security Applications"
Thursday, December 12, 2019, 10:30 AM
Jonas Karthein, CERN & Universitat Heidelberg, Germany
"High-precision mass measurements for nuclear structure and astrophysics studies"
Monday, December 16, 2019, 11:00 AM
Dr. Fnu Krishichayan, TUNL and Duke University
"Nuclear data activities at TUNL relevant to NNSA interests and isotope production"
Thursday, August 27, 2020
ZOOM ID: 932 0238 3806; Password: NPForum27
Dr. Michael Skulski
Department of Physics, University of Notre Dame
"Development of 129I AMS at the NSL for Measurements of the Great Lakes Region"
The radionuclide 129I, with a half-life of 15.7 × 106 years, is produced naturally on Earth in the atmosphere through cosmic-ray-induced reactions on xenon isotopes, as well as through spontaneous fission of terrestrial uranium. These contributions to the 129I content on Earth pale in comparison, however, to the amount that has been released by spent nuclear fuel reprocessing centers, having contributed approximately 60 times the natural content. 129I can move very efficiently through the environment, and because of its “point-like” releases from reprocessing centers, 129I has the potential to be a powerful environmental tracer. For this capability to be realized, the 129I distribution throughout the environment needs to be established – previous measurements have primarily focused on nuclear facilities and nuclear disaster sites, leaving a large area of the globe unmeasured. This inspired the Collon group of the Nuclear Science Laboratory (NSL) of the University of Notre Dame to contribute data on 129I levels, specifically in the Great Lakes region. Water samples were collected from Lake Michigan and rivers throughout Michigan and analyzed for their 129I content through the technique of Accelerator Mass Spectrometry (AMS) for separation from the primary interference, 127I, using the time-of-flight technique. The AMS program at the NSL, the development of 129I AMS at the NSL, results of the water survey, and future work on 129I AMS and other AMS projects will be discussed.
Wednesday, May 5, 2021
ZOOM ID: 948 3122 3509; Password: Nuclei
Mr. Axel Frotscher
Institut fur Kernphysik, TU Darmstadt
"The (p,3p) two-proton removal from neutron-rich nuclei and the development of the STRASSE tracker"
Wednesday, May 19, 2021
ZOOM ID: 938 6185 8697; Password: Nucleus
Mr. Anton Samark-Roth
Department of Physics, Lund University
"Spectroscopy along Decay Chains of Element 114, Flerovium"
Wednesday, June 9, 2021
ZOOM ID: 974 0263 1730; Password: Nucleus
Ms. Carlotta Porzio
University of Milan
"Configuration mixing investigation in germanium isotopes through measurement of E0 transition strengths"
Thursday, July 8, 2021
ZOOM ID: 970 9765 0085; Password: Nucleus
Dr. Özge Aktas
KTH Royal Institute of Technology, Stockholm, Sweden
“Gamma-Ray Spectroscopy of Neutron-Rich 111Mo, 85,87Ge and Self-Conjugate 88Ru Far From Stability”
Excited states in the neutron-rich nucleus 111Mo were studied following nucleon knockout reactions. 7 γ-ray transitions were identified for the first time using the DALI2 and MINOS detector systems at the BigRIPS and ZeroDegree electromagnetic fragment separator at the RIBF, RIKEN, Japan. Total Routhian surface (TRS) and Particle-Plus-Rotor calculations have been performed to investigate the predicted shape coexistence and its effect on the structure of nuclei in this region of the nuclear chart. Following the results of the calculations, theoretical level schemes are proposed for positive and negative parity states and compared with the experimental findings.
Friday, July 9, 2021
ZOOM ID: 967 4554 8394; Password: Nucleus
Dr. Xiaoyu Liu
KTH Royal Institute of Technology, Stockholm, Sweden
“Experimental Studies of the Neutron Deficient Atomic Nuclei 88Ru and 87Tc, and the Diagonalization of the Pairing Hamiltonian”