Publications by authors named "Evan Groopman"

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Uranium particle age dating, aggregation, and model age best estimators.
Evan E Groopman, Todd L Williamson, Timothy R Pope, Michael G Bronikowski, Spencer M Scott

Analyst· July 2025

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Improved Uranium Particle Analysis by SIMS using O Primary Ions.
Evan E Groopman, Todd L Williamson, David S Simons

J Anal At Spectrom· January 2022

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U-Pu Mixed Oxide Particle Analysis by NAUTILUS and Implications for Next-Generation Verification Challenges.
David Willingham, Evan Groopman, Laure Sangely

J Am Soc Mass Spectrom· July 2020

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An overview of NRL's NAUTILUS: a combination SIMS-AMS for spatially resolved trace isotope analysis.
Evan E Groopman, David G Willingham, Albert J Fahey, Kenneth S Grabowski

J Anal At Spectrom· March 2020

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Discovery of fissionogenic Cs and Ba capture five years after Oklo reactor shutdown.
Evan E Groopman, David G Willingham, Alex P Meshik, Olga V Pravdivtseva

Proc Natl Acad Sci U S A· August 2018

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Measurement of Uranium Isotopes in Particles of U3O8 by Secondary Ion Mass Spectrometry-Single-Stage Accelerator Mass Spectrometry (SIMS-SSAMS).
Albert J Fahey, Evan E Groopman, Kenneth S Grabowski, Kamron C Fazel

Anal Chem· July 2016

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