Jennifer L. Niedziela

Scientific Associate, Oak Ridge National Laboratory, Oak Ridge, TN July 2007 - 2015

Supported construction, installation, commissioning, and user operation of the time-of-flight chopper spectrometer instruments at the Spallation Neutron Source. Served in the role of local contact, which entailed actively participating in all aspects of user experiments, interpretation of data, and publication of results. Worked concurrently to plan upgrades including commissioning large sample environment equipment and scattering optics. Developed a suite of tools to analyze instrument performance. Worked closely with safety personnel to ensure safe and reliable operation of the instrument. Coordinated maintenance and repairs as required on the instrument and subsystems. Developed experimental program utilizing the neutron scattering facilities at ORNL. Worked with the Center for Accelerating Materials Modeling in ongoing effort related to visualization and optimization of lattice dynamics simulations.

Operations Coordinator, Brookhaven National Laboratory, Upton, NY April 2006 - July 2007

Oversaw shift personnel and the operation of the Relativistic Heavy Ion Collider (RHIC) accelerator complex as part of a rotating shift team. Acted as on-site emergency coordinator during running periods and safety coordinator during off hours. Ensured safe operation of accelerator systems, and adherence to environmental regulations. Managed projects to update accelerator sequencing software and operations documentation. Developed, conducted, and analyzed beam experiments to improve accelerator optics and alignment.

Physics Associate, Brookhaven National Laboratory, Upton, NY Sept. 2003 - April 2006

Responsible for beam operation, access to radiation areas, and adherence to radiation safety procedures as part of a rotating shift team at the RHIC accelerator complex. Acted as a liaison between experimenters and staff, assisted physicists with studies, and worked independently on computer models of beam dynamics and accelerator optics.

 

Education

University of Tennessee, Department of Physics and Astronomy, Knoxville TN
Doctorate of Philosophy, Physics, December 2012
Concentration in Condensed Matter Physics
Dissertation Title: Structure and Dynamics of High Temperature Superconductors

University of Massachusetts Amherst, Amherst, Massachusetts
Bachelor of Science, Physics, September 2003

Research

Investigation of the local structure and lattice dynamics of complex materials using techniques of neutron and x-ray scattering, with specific interest in high-temperature superconductors, thermoelectrics, and materials for energy sustainability. Development of computational models to study exotic material properties. Development of software for scientific computing and data visualization applications. Neutron scattering instrumentation development and characterization. Operational reliability and efficiency. Scientific outreach and education.​

Selected Publications

​J. L. Niedziela, M. B. Stone. Structural distortion in CdTe observed in neutron and x-ray scattering. Applied Physics Letters 105, 102101 (2014). DOI: 10.1063/1.4895335

D. L. Abernathy, J. L. Niedziela, M. B. Stone. Extracting source parameters from beammonitors on a chopper spectrometer. Proceedings of the Workshop on Inelastic Neutron Spec- trometers (2014).

M. B. Stone, J. L. Niedziela, M. Overbay and D. L. Abernathy, . A radial collimator for a thermal time-of-flight spectrometer. Proceedings of the Workshop on Inelastic Neutron Spectrometers (2014).​

M. B. Stone, D. L. Abernathy, J. L. Niedziela, M. J. Loguillo, M. Overbay. A radial collimator for a thermal time-of-flight neutron spectrometer. Review of Scientific Instruments 85, 085101 (2014). DOI: 10.1063/1.4891302

Bing Li, Despina Louca, Biao Hu, Jennifer L. Niedziela, Jianshi Zhou, John B. Goodenough. Dynamic distortions in the YiTiO3 ferromagnet. Journal of the Physical Society of Japan 83, 084601 (2014). DOI: 10.7566/JPSJ.83.084601

M. B. Stone, J. L. Niedziela, D. L. Abernathy, L. DeBeer-Schmitt, G. Ehlers, V. Garlea, G. E. Granroth, M. Graves-Brook, A. I. Kolesnikov, A. Podlesnyak B. Winn. A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source. Review of Scientific Instruments 85, 045113 (2014

Jennifer L. Niedziela, M. A. McGuire, T. Egami. Local structural variation as source of magnetic moment reduction in BaFe2As2. Phys. Rev. B 86, 174113 (2012), DOI: 10.1103/Phys- RevB.86.17411

G. Ehlers, A. A. Podlesnyak, J. L. Niedziela, E. B. Iverson, P. E. Sokol. The New Cold Neutron Chopper Spectrometer at the Spallation Neutron Source - Design and Performance. Re- view of Scientific Instruments 82, 085108 (2011), DOI: 10.1063/1.362693

Jennifer L. Niedziela, D. Parshall, K. A. Lokshin, A. S. Sefat, A. Alatas, T. Egami. Phonon softening near the structural transition in BaFe2As2 observed by inelastic X-ray scattering. Phys. Rev. B 84, 224305 (2011), DOI: 10.1103/PhysRevB.84.224305

More publication info available on Google Scholar Page: http://tinyurl.com/JenNiedziela

Awards, Honors and Memberships

​Member, Sigma Pi Sigma, University Of Tennessee Knoxville Chapter
Member, American Association for the Advancement of Science
Member, Neutron Scattering Society of America
Member, American Physical Society
Member, Materials Research Society
Member, American Nuclear Society​