David Willingham
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Barium isotopic composition of mainstream silicon carbides from Murchison: Constraints for s-process nucleosynthesis in asymptotic giant branch stars
N Liu, MR Savina, AM Davis, R Gallino, O Straniero, F Gyngard, MJ Pellin, ...
The Astrophysical Journal 786 (1), 66, 2014
Freeze-etching and vapor matrix deposition for ToF-SIMS imaging of single cells
PD Piehowski, ME Kurczy, D Willingham, S Parry, ML Heien, N Winograd, ...
Langmuir 24 (15), 7906-7911, 2008
Characterization of extreme ultraviolet laser ablation mass spectrometry for actinide trace analysis and nanoscale isotopic imaging
T Green, I Kuznetsov, D Willingham, BE Naes, GC Eiden, Z Zhu, W Chao, ...
Journal of Analytical Atomic Spectrometry 32 (6), 1092-1100, 2017
Molecular depth profiling and imaging using cluster ion beams with femtosecond laser postionization
D Willingham, A Kucher, N Winograd
Applied Surface Science 255 (4), 831-833, 2008
Strong-field ionization of sputtered molecules for biomolecular imaging
D Willingham, A Kucher, N Winograd
Chemical physics letters 468 (4-6), 264-269, 2009
The effect of incident angle on the C60+ bombardment of molecular solids
J Kozole, D Willingham, N Winograd
Applied surface science 255 (4), 1068-1070, 2008
Femtosecond laser ablation multicollector ICPMS analysis of uranium isotopes in NIST glass
AM Duffin, KW Springer, JD Ward, KD Jarman, JW Robinson, MC Endres, ...
Journal of Analytical Atomic Spectrometry 30 (5), 1100-1107, 2015
Strong-field photoionization of sputtered neutral molecules for molecular depth profiling
D Willingham, DA Brenes, A Wucher, N Winograd
The Journal of Physical Chemistry C 114 (12), 5391-5399, 2010
Three-dimensional molecular imaging using mass spectrometry and atomic force microscopy
A Wucher, J Cheng, L Zheng, D Willingham, N Winograd
Applied Surface Science 255 (4), 984-986, 2008
Nanotome cluster bombardment to recover spatial chemistry after preparation of biological samples for SIMS imaging
ME Kurczy, PD Piehowsky, D Willingham, KA Molyneaux, ML Heien, ...
Journal of the American Society for Mass Spectrometry 21 (5), 833-836, 2010
Rapid isotopic analysis of uranium particles by laser ablation MC-ICP-MS
J Wimpenny, KM Samperton, P Sotorrio, MS Wellons, SM Scott, ...
Journal of Analytical Atomic Spectrometry 38 (4), 827-840, 2023
An overview of NRL's NAUTILUS: a combination SIMS-AMS for spatially resolved trace isotope analysis
EE Groopman, DG Willingham, AJ Fahey, KS Grabowski
Journal of analytical atomic spectrometry 35 (3), 600-625, 2020
Discovery of fissionogenic Cs and Ba capture five years after Oklo reactor shutdown
EE Groopman, DG Willingham, AP Meshik, OV Pravdivtseva
Proceedings of the National Academy of Sciences 115 (35), 8676-8681, 2018
Image segmentation for uranium isotopic analysis by SIMS: Combined adaptive thresholding and marker controlled watershed approach
D Willingham, BE Naes, PG Heasler, MM Zimmer, CA Barrett, ...
Journal of Vacuum Science & Technology B 34 (3), 2016
RIMS analysis of ion induced fragmentation of molecules sputtered from an enriched U3O8 matrix
D Willingham, MR Savina, KB Knight, MJ Pellin, ID Hutcheon
Journal of Radioanalytical and Nuclear Chemistry 296, 407-412, 2013
High resolution isotopic analysis of U-bearing particles via fusion of SIMS and EDS images
JG Tarolli, BE Naes, BJ Garcia, AE Fischer, D Willingham
Journal of Analytical Atomic Spectrometry 31 (7), 1472-1479, 2016
Investigating the fundamentals of molecular depth profiling using strong‐field photoionization of sputtered neutrals
D Willingham, DA Brenes, N Winograd, A Wucher
Surface and interface analysis 43 (1‐2), 45-48, 2011
Direct, uncorrected, molecule-free analysis of 236 U from uranium-bearing particles with NAUTILUS: a new kind of mass spectrometer
D Willingham, EE Groopman, KS Grabowski, L Sangely
Analyst 143 (22), 5364-5371, 2018
Rate equation model of laser induced bias in uranium isotope ratios measured by resonance ionization mass spectrometry
BH Isselhardt, SG Prussin, MR Savina, DG Willingham, KB Knight, ...
Journal of Analytical Atomic Spectrometry 31 (3), 666-678, 2016
Secondary ion mass spectrometry signatures for verifying declarations of fissile‐material production
D Willingham, BE Naes, KA Burns, BD Reid
Applied Radiation and Isotopes 97, 125-129, 2015
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