Lawrence Livermore National Laboratory



Jutta Escher

Executive Summary

We will develop a predictive theory for inelastic nuclear scattering and use this new capability to determine an important nuclear reaction cross section that elucidates the origin of the elements. Our theory will enable reaction measurements for a wide range of radioisotopes currently not available, and lead to more reliable data evaluations for applications in nuclear energy, nonproliferation, and stockpile stewardship.

Publications, Presentations, Etc.

Chimanski, E., et al. 2019. "Improved Inelastic Scattering Descriptions for Nuclear Data Evaluations, Nuclear Structure and Reaction Studies." DNP Fall 2019 Meeting. LLNL-ABS-779840.

Escher, J. 2019."Surrogate Reactions: Doorways to Cross Sections for Unstable Isotopes." Notre Dame University, February 2019. LLNL-ABS-766185.

——— . 2019. "Cosmic Cauldrons and Exotic Nuclei: New Reaction Theory Developments for Determining Unknown Cross Sections." ASRC International Workshop Nuclear Fission and Structure of Exotic Nuclei, Tokai, Japan, March 2019. LLNL-ABS-765921.

——— . 2019. "Nuclear Reaction Theory for the Era of Multi-messenger Observations: Capture Cross Sections From Indirect Measurements." Nuclear and Astrophysics Aspects for the Rapid Neutron Capture Process in the Era of Multi-messenger Observations, Trento, Italy, July 2019. LLNL-ABS-774252.

——— . 2019. "Surrogate Reactions: Doorways to Cross Sections for Unstable Isotopes." 2019 International Conference on Nuclear Data for Science and Technology. LLNL-ABS-762485.

Gorton, O. and J. Escher. 2018. "Neutron Capture Cross Sections from Surrogate Reaction Data and Theory: Connecting the Pieces with a Markov-Chain Monte Carlo Approach." 6th International Workshop on Compound-Nuclear Reactions and Related Topics (CNR*18), Berkeley, CA, September 2018. LLNL-PROC-773586.

Guerguiev, V., et al. 2018. "Neutron Transfer Reactions for Deformed Nuclei Using a Sturmian Basis." 6th International Workshop on Compound-Nuclear Reactions and Related Topics (CNR*18), Berkeley, CA, September 2018. PROC-765391.

Mercenne, A., et al. 2018. "New Ab Initio Approach to Nuclear Reactions Based on the Symmetry-Adapted No-Core Shell Model." XXII International Conference on Few-Body Problems in Physics, Caen, France. LLNL-PROC-763583.

——— . 2018. "New Symmetry-Adapted Ab Initio Approach to Nuclear Reactions for Intermediate-Mass Nuclei." 6th International Workshop on Compound-Nuclear Reactions and Related Topics (CNR*18), Berkeley, CA, September 2018. LLNL-PROC-767220.