Laser ablation plasmas and spectroscopy for nuclear applications

EH Kwapis, J Borrero, KS Latty, HB Andrews… - Applied …, 2024 - opg.optica.org
The development of measurement methodologies to detect and monitor nuclear-relevant
materials remains a consistent and significant interest across the nuclear energy …

Optical spectroscopy and modeling of uranium gas-phase oxidation: Progress and perspectives

EJ Kautz, EN Weerakkody, MS Finko, D Curreli… - … Acta Part B: Atomic …, 2021 - Elsevier
Studies related to U gas-phase oxidation through plasma-and thermo-chemistry are
important for many fields, including environmental monitoring, forensic analysis, debris …

Laser ablation spectrometry for studies of uranium plasmas, reactor monitoring, and spent fuel safety

M Burger, LA Finney, L Garrett, SS Harilal… - … Acta Part B: Atomic …, 2021 - Elsevier
Nuclear security is one of the defining challenges of our time. Nuclear threats range from
deliberate dispersal of radioactive material to contaminate the vital infrastructure to diversion …

Evaluating compositional effects on the laser-induced combustion and shock velocities of Al/Zr-based composite fuels

ER Wainwright, SW Dean, SV Lakshman… - Combustion and …, 2020 - Elsevier
Laser-induced air shock from energetic materials (LASEM) is a laboratory-scale method for
assessing the microsecond and millisecond timescale performance of conventional military …

Time-resolved formation of uranium and silicon oxides subsequent to the laser ablation of U3Si2

EN Weerakkody, DG Weisz, J Crowhurst… - … Acta Part B: Atomic …, 2020 - Elsevier
The early-time kinetic behavior of species in a plume produced from laser ablation of U 3 Si
2 in an environment containing 2% O 2 is characterized using time-resolved absorption …

The role of ambient gas confinement, plasma chemistry, and focusing conditions on emission features of femtosecond laser-produced plasmas

EJ Kautz, J Yeak, BE Bernacki, MC Phillips… - Journal of analytical …, 2020 - pubs.rsc.org
Ultrafast laser ablation coupled with optical emission spectroscopy is currently under
development for standoff detection of elements and their isotopes for a wide range of …

Effect of sample morphology on the spectral and spatiotemporal characteristics of laser-induced plasmas from aluminum

ER Wainwright, SW Dean, FC De Lucia, TP Weihs… - Applied Physics A, 2020 - Springer
Species stratification and local plasma composition can affect microsecond-timescale
oxidation reaction rates of metals such as Al in an oxidizing atmosphere. Here, we utilize …

The effect of oxygen concentration on the speciation of laser ablated uranium

MA Burton, AW Auner, JC Crowhurst, PS Boone… - Scientific Reports, 2022 - nature.com
In order to model the fate and transport of particles following a nuclear explosion, there must
first be an understanding of individual physical and chemical processes that affect particle …

Experimental and computational investigation into the hydrodynamics and chemical dynamics of laser ablation aluminum plasmas

EH Kwapis, JW Posey, E Medici, K Berg… - Physical Chemistry …, 2023 - pubs.rsc.org
Laser ablation plasma chemistry is governed by a complex interplay between hydrodynamic
plasma-gas mixing processes, thermodynamics, and rapid high-temperature chemical …

Spatiotemporal and emission characteristics of laser-induced plasmas from aluminum-zirconium composite powders

ER Wainwright, F De Lucia, TP Weihs… - Spectrochimica Acta Part …, 2021 - Elsevier
Laser-induced plasmas and reactions therein depend on the ablated target's chemical
composition and morphology. Recently, we have characterized plasma properties such as …