Senior Radioemission Spectroscopist

** Overview*
* At PNNL, our core capabilities are divided among major departments that we refer to as Directorates within the Lab, focused on a specific area of scientific research or other function, with its own leadership team and dedicated budget.

Our Science & Technology directorates include National Security, Earth and Biological Sciences, Physical and Computational Sciences, and Energy and Environment. In addition, we have an Environmental Molecular Sciences Laboratory, a Department of Energy, Office of Science user facility housed on the PNNL campus.

The Energy and Environment Directorate delivers science and technology solutions for the nation's biggest energy and environmental challenges. Our more than 1,700 staff support the Department of Energy (DOE), delivering on key DOE mission areas including: modernizing our nation's power grid to maintain a reliable, affordable, secure, and resilient electricity delivery infrastructure; research, development, validation, and effective utilization of renewable energy and efficiency technologies that improve the affordability, reliability, resiliency, and security of the American energy system;

and resolving complex issues in nuclear science, energy, and environmental management.

The Nuclear Sciences Division, part of the Energy and Environment Directorate, delivers science and technology innovations for the environment, energy, and national security. At a time when complex challenges are emerging on many fronts, we address some of the most challenging national and international nuclear issues. This includes providing technological solutions that protect the public health and safety around nuclear facilities, developing durable new materials for extreme nuclear environments, innovating new nuclear processes for the safety and security of the nation, and delivering new approaches for accelerating environmental cleanup of nuclear sites.

The division's capabilities and efforts are focused on environmental management of nuclear sites, nuclear regulatory processes, national nuclear security, and advancing nuclear energy.

** Responsibilities*
* The Nuclear Chemistry & Engineering (NCE) Group supports Hanford Site cleanup, river corridor protection, nuclear materials stewardship, non-proliferation missions, the nuclear fuel life cycle, national security missions, and energy production, and is engaged in expanding the beneficial use of nuclear materials and radionuclides. Through high-quality fundamental and applied science and strong academic collaborations, we are fostering a renewed focus on radiochemistry and irradiated materials research for providing solutions in nuclear nonproliferation, environmental cleanup and protection, advanced nuclear energy, and for use in medicine and industry.

The NCE group is seeking a senior physicist with expertise in radioemission spectroscopy (alpha, beta and gamma detection and quantitation) to oversee methods, tools, work execution and continuous improvement efforts. Responsibilities and skills include reactor dosimetry measurements such as those regularly conducted for HFIR, ATR, and NCERC experiments; analyzing complex low-activity and high-activity samples in support of the International Monitoring System's Radiation Laboratory and nuclear forensics;

support fundamental nuclear data measurements probing neutron induced fission yields of actinides; develop algorithms and software for automated analysis of advanced radio-emission spectroscopy systems; and design and build detector arrays for improved detection sensitivities. The candidate should have a strong working knowledge of radiation transport, C++/Python, and CERN's ROOT & GEANT4 data analysis & simulation frameworks; these skills will be leveraged to test developed analysis tools against complex bulk fission product spectra acquired using continuous, prompt, and cyclic neutron activation techniques.

The candidate will be expected to publish fundamental nuclear data and support open-source development of advanced radio-emission spectroscopy instrumentation & methods. The candidate will be expected to perform counting experiments, simulated validation, and…