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Search Publications by: Svetlana Nour (Fed)

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Displaying 26 - 50 of 50

Lithium-loaded Liquid Scintillator Production for the PROSPECT experiment

March 26, 2019
Author(s)
Hans Pieter Mumm, Denis E. Bergeron, Mark Tyra, Svetlana Nour, Jerome LaRosa
This work reports the production and characterization of lithium-loaded liquid scintillators (LiLS) for the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT). Fifty-nine 90 L batches of LiLS (6Li mass fraction 0.082%0.001%) were produced

Observation of antineutrinos from 235U fission by the PROSPECT experiment at HFIR

December 19, 2018
Author(s)
Mark A. Tyra, Denis E. Bergeron, Jerome J. LaRosa, Hans P. Mumm, Svetlana Nour
This letter reports the first observation of antineutrinos from the fission products of highly enriched 235U at the High Flux Isotope Reactor. PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, consists of a segmented 4 ton 6Li-doped

Natural Uranium Radioactivity Solution Standard: SRM 4321d

December 27, 2017
Author(s)
Ronald Colle, Lizbeth Laureano-Perez, Svetlana Nour, Jerome J. LaRosa, Brian E. Zimmerman, Leticia S. Pibida, Denis E. Bergeron
A new natural uranium solution standard has been produced and will be disseminated by the National Institute of Standards and Technology (NIST) as Standard Reference Material 4321d. The standard is certified for the massic activities of 234U, 235U, and

Characterization of the NIST Shellfish Standard Reference Material 4358

March 1, 2013
Author(s)
Svetlana Nour, Kenneth G. Inn, James J. Filliben, Hank dan der Gaast, Lee Chung Men, M.D. Calmet, P Povinec, Y Takata, M. Wisdom, K. Nakamura, Pia Vesterbacka, Ching-Chung Huang, S M. Vakulovsky
A new Shellfish Standard Reference Material (SRM 4358) was developed at the National Institute of Standards and Technology (NIST) via an international intercomparison project that involved 12 laboratories-participants from 9 countries (Table 1). This

A New Primary Standardization of Th-229

January 7, 2010
Author(s)
Ryan P. Fitzgerald, Lizbeth Laureano-Perez, Michelle M. Hammond, Leticia S. Pibida, Svetlana Nour, Brian E. Zimmerman
The National Institute of Standards and Technology (NIST) has certified a high-purity Th-229 Standard Reference Material as SRM 4328C, based on live-timed 4-pi alpha,beta-gamma anticoincidence counting (LTAC) of the equilibrium solution. The LTAC system

Ultra-Low Level Plutonium Isotopes in the NIST SRM 4355A (Peruvian Soil-1)

January 9, 2009
Author(s)
Kenneth G. Inn, Jerome LaRosa, Svetlana Nour, James J. Filliben, George Brooks, Stephen Lamont, Rob Steiner, Ross W. Williams, Brad Patton, Debbie Bostick, Gregory Eiden, Steve Petersen, Donna Beals, James Cadieux, Greg Hall, Steve Goldenberg, Stephen Vogt
For more than 20 years, countries and their agencies which monitor discharge sites and storage facilities have relied on the National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 4355 Peruvian Soil reference material. Its

Development of the NIST Rocky Flats Soil Standard

March 29, 2007
Author(s)
Svetlana Nour, James J. Filliben, Kenneth G. Inn
The National Institute of Standards and Technology (NIST) Rocky Flats Soil-II Standard Reference Material (SRM) is being certified through a statistical analysis of results from an interlaboratory comparison of 14 laboratories from 4 countries. The mean

Investigation of Radioactivity in Selected Drinking Water Samples From Maryland

March 29, 2007
Author(s)
Iisa Outola, Svetlana Nour, Hiromu Kurosaki, Kenneth G. Inn, J J. La Rosa, Larry L. Lucas, Peter Volkovitsky, Kevin Koepenick
In 2004, levels of radioactivity exceeding federal drinking water standards were found in two separate areas of Maryland through gross alpha and beta screening measurements. It was desired to know which radionuclides were responsible for the activity and