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Svetlana Nour (Fed)

Svetlana Nour became a member of the PML Radioactivity Group (RG) in 2013 after being an associate NIST/University of Hawaii, 2010-2013 and NIST/University of Maryland, 2002 - 2010. She is a radiochemist trained in developing/optimizing radioanalytical methods for radioactivity analyses quantifying radionuclide massic activities in different matrices. Her expertise is applied in using and optimizing a range of radiochemical techniques for separation and measurements of radionuclides from a wide variety of matrices (from pure solution to complex environmental and biological samples). Her research includes exploring different techniques of samples dissolution (fusion, total acid dissolution/decomposition, and leaching) and radiochemical separation of radionuclides (precipitation, co-precipitation, anion-exchange, and chromatographic separation). She uses different measurement techniques such as alpha spectrometry including source preparation (co-precipitation and electrodeposition), beta spectrometry based on Liquid Scintillation Counting (LSC) and Gas-flow Proportional Counting (GFPC), and gamma spectrometry including calibration of gamma detectors with a wide range of geometry matrices (from pure solution to complex matrices).

Within the Radioactivity Group's efforts in developing Standard Reference Materials (SRM) she contributes by analyzing pure SRM as confirmatory measurements or for potential impurities performing alpha spectrometry measurements. She participates in International Laboratory Intercomparison projects to certify Natural Certified Reference Materials (CRM) based on consensus approaches for the radionuclide composition determined by comparison projects’ participants.

She is actively involved in two Proficiency Testing (PT) Programs: Radiological Traceability Program (RTP) with the DOE Reference Laboratory, the Radiological and Environmental Sciences Laboratory (RESL); and NIST Radiochemistry Intercomparison Program (NRIP) by preparing and characterizing performance testing materials and conducting measurement traceability evaluations of participating radianalytical laboratories


Toward a New Primary Standardization of Radionuclide Massic Activity Using Microcalorimetry and Quantitative Milligram-Scale Samples

Ryan P. Fitzgerald, Bradley Alpert, Dan Becker, Denis E. Bergeron, Richard Essex, Kelsey Morgan, Svetlana Nour, Galen O'Neil, Dan Schmidt, Gordon A. Shaw, Daniel Swetz, R. Michael Verkouteren, Daikang Yan
We present a new paradigm for the primary standardization of radionuclide activity per mass of solution (Bq/g). Two key enabling capabilities are 4π decay

Limits on Strongly Interacting Sub-GeV Dark Matter from the PROSPECT Reactor Antineutrino Experiment

Hans Pieter Mumm, Denis E. Bergeron, Mark Tyra, Jerome LaRosa, Svetlana Nour, M Andriamirado, A.B. Balantekin, H.R. Band, C.D. Bass, D. Berish, N.S. Bowden, J.P. Brodsky, C.D. Bryan, T. Classen, A.J. Conant, G. Deichert, M.V. Diwan, M.J. Dolinski, A. Erickson, B.T. Foust, J.K. Gaison, A. Galindo-Uribarri, C.E. Gilbert, B.W. Goddard, B.T. Hackett, S. Hans, A.B. Hansell, K.M. Heeger, D.E. Jaffe, X. Ji, D.C. Jones, O. Kyzylova, C.E. Lane, T.J. Langford, B.R. Littlejohn, X. Lu, J. Maricic, M.P. Mendenhall, A.M. Meyer, R. Milincic, I. Mitchell, P.E. Mueller, J. Napolitano, C. Nave, R. Neilson, J.A. Nikkel, D. Norcini, J.L. Palomino, D.A. Pushin, X. Qian, E. Romero-Romero, R. Rosero, P.T. Surukuchi, R.L. Varner, D. Venegas-Vargas, P.B. Weatherly, C. White, J. Wilhelmi, A. Woolverton, M. Yeh, A. Zhang, C. Zhang, X. Zhang
If dark matter has mass lower than around 1 GeV, it will not impart enough energy to cause detectable nuclear recoils in many direct-detection experiments
Created October 3, 2019, Updated December 8, 2022