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View article: SHarmonic: A fast and accurate implementation of spherical harmonics for electronic-structure calculations
SHarmonic: A fast and accurate implementation of spherical harmonics for electronic-structure calculations Open
The authors present SHarmonic, a new implementation of the spherical harmonics targeted for electronic-structure calculations. Their approach is to use explicit formulas for the harmonics written in terms of normalized Cartesian coordinate…
View article: <i>VERITAS</i>: A density-functional theory-based multiband kinetic model for understanding x-ray spectroscopy of dense plasmas
<i>VERITAS</i>: A density-functional theory-based multiband kinetic model for understanding x-ray spectroscopy of dense plasmas Open
X-ray spectroscopy has long been a powerful diagnostic tool for hot, dilute plasmas, providing insights into plasma conditions by measuring line shifts and broadenings of atomic transitions. The technique critically depends on the accuracy…
View article: Colossal Terahertz Emission with Ultrafast Tunability Based on Van der Waals Ferroelectric NbOI<sub>2</sub> (Advanced Optical Materials 15/2025)
Colossal Terahertz Emission with Ultrafast Tunability Based on Van der Waals Ferroelectric NbOI<sub>2</sub> (Advanced Optical Materials 15/2025) Open
View article: Femtosecond temperature measurements of laser-shocked copper deduced from the intensity of the x-ray thermal diffuse scattering
Femtosecond temperature measurements of laser-shocked copper deduced from the intensity of the x-ray thermal diffuse scattering Open
We present 50-fs, single-shot measurements of the x-ray thermal diffuse scattering (TDS) from copper foils that have been shocked via nanosecond laser ablation up to pressures above ∼135 GPa. We hence deduce the x-ray Debye–Waller factor, …
View article: Multimodal Distillation-Driven Ensemble Learning for Long-Tailed Histopathology Whole Slide Images Analysis
Multimodal Distillation-Driven Ensemble Learning for Long-Tailed Histopathology Whole Slide Images Analysis Open
Multiple Instance Learning (MIL) plays a significant role in computational pathology, enabling weakly supervised analysis of Whole Slide Image (WSI) datasets. The field of WSI analysis is confronted with a severe long-tailed distribution p…
View article: Colossal Terahertz Emission with Ultrafast Tunability Based on Van der Waals Ferroelectric NbOI<sub>2</sub>
Colossal Terahertz Emission with Ultrafast Tunability Based on Van der Waals Ferroelectric NbOI<sub>2</sub> Open
Terahertz (THz) technology is critical for quantum material physics, biomedical imaging, ultrafast electronics, and next‐generation wireless communications. However, standing in the way of widespread applications is the scarcity of efficie…
View article: Measurement of interfacial thermal resistance in high-energy-density matter
Measurement of interfacial thermal resistance in high-energy-density matter Open
View article: Exploration of polar direct drive wetted foam concepts for neutron sources on the National Ignition Facility laser
Exploration of polar direct drive wetted foam concepts for neutron sources on the National Ignition Facility laser Open
A multi-laboratory collaborative effort is currently exploring the feasibility of laser direct drive liquid deuterium–tritium (DT) wetted foam inertial confinement fusion concepts being considered for novel neutron sources on the National …
View article: Femtosecond temperature measurements of laser-shocked copper deduced from the intensity of the x-ray thermal diffuse scattering
Femtosecond temperature measurements of laser-shocked copper deduced from the intensity of the x-ray thermal diffuse scattering Open
We present 50-fs, single-shot measurements of the x-ray thermal diffuse scattering (TDS) from copper foils that have been shocked via nanosecond laser-ablation up to pressures above 135~GPa. We hence deduce the x-ray Debye-Waller (DW) fact…
View article: Effect of self-generated magnetic fields on x-ray emission in Kr-filled targets at the National Ignition Facility
Effect of self-generated magnetic fields on x-ray emission in Kr-filled targets at the National Ignition Facility Open
We examine the effects of self-generated magnetic fields in a Kr gas pipe x-ray source platform. X-ray emission from Kr plasma is dependent on the plasma conditions, as the ionization state is largely a function of temperature. Magnetic fi…
View article: Colossal terahertz emission with ultrafast tunability based on van der Waals ferroelectric NbOI$_2$
Colossal terahertz emission with ultrafast tunability based on van der Waals ferroelectric NbOI$_2$ Open
Terahertz (THz) technology is critical for quantum material physics, biomedical imaging, ultrafast electronics, and next-generation wireless communications. However, standing in the way of widespread applications is the scarcity of efficie…
View article: Identifying, quantifying, and mitigating background with the time-resolved x-ray diffraction platform at NIF
Identifying, quantifying, and mitigating background with the time-resolved x-ray diffraction platform at NIF Open
View article: Measurements of K-edge and L-edge extended x-ray absorption fine structure at the national ignition facility (invited)
Measurements of K-edge and L-edge extended x-ray absorption fine structure at the national ignition facility (invited) Open
High-energy-density laser facilities and advances in dynamic compression techniques have expanded access to material states in the Terapascal regime relevant to inertial confinement fusion, planetary science, and geophysics. However, exper…
View article: Frustraum 1100 experimental campaign on the national ignition facility
Frustraum 1100 experimental campaign on the national ignition facility Open
View article: Spatiotemporal dynamics of fast electron heating in solid-density matter via XFEL
Spatiotemporal dynamics of fast electron heating in solid-density matter via XFEL Open
View article: Developing time-resolved x-ray diffraction diagnostics at the National Ignition Facility (invited)
Developing time-resolved x-ray diffraction diagnostics at the National Ignition Facility (invited) Open
As part of a program to measure phase transition timescales in materials under dynamic compression, we have designed new x-ray imaging diagnostics to record multiple x-ray diffraction measurements during a single laser-driven experiment. O…
View article: Phase retrieval for refraction-enhanced x-ray radiography using a deep neural network
Phase retrieval for refraction-enhanced x-ray radiography using a deep neural network Open
X-ray refraction-enhanced radiography (RER) or phase contrast imaging is widely used to study internal discontinuities within materials. The resulting radiograph captures both the decrease in intensity caused by material absorption along t…
View article: Interactions of laser-driven tin ejecta microjets over phase transition boundaries
Interactions of laser-driven tin ejecta microjets over phase transition boundaries Open
Ejecta microjets offer an experimental methodology to study high-speed particle laden-flow interactions, as microjets consist of millions of particulates traveling at velocities of several kilometers per second and are easily generated by …
View article: Milestone report for MRT 8504: Commission EXAFS spectrometer with spectral range of 17.95-18.6 keV design to obtain EXAFS data for Pu L shell experiments
Milestone report for MRT 8504: Commission EXAFS spectrometer with spectral range of 17.95-18.6 keV design to obtain EXAFS data for Pu L shell experiments Open
This milestone describes the development and fielding of EXAFS Phase II spectrometer designed to provide high quality (SNR>=5) EXAFS spectra for Plutonium measurements at the National Ignition facility (NIF). Benefits: the EXAFS data will …
View article: A review on charged-particle transport modeling for laser direct-drive fusion
A review on charged-particle transport modeling for laser direct-drive fusion Open
Inertial confinement fusion (ICF) with the laser-indirect-drive scheme has recently made a tremendous breakthrough recently after decades of intensive research effort. Taking this success to the next step, the ICF community is coming to a …
View article: Parametrized ion-distribution model for extended x-ray absorption fine-structure analysis at high-energy-density conditions
Parametrized ion-distribution model for extended x-ray absorption fine-structure analysis at high-energy-density conditions Open
Experiments today can compress solids near isentropically to pressures approaching 100 × 106 atmospheres; however, determining the temperature of such matter remains a major challenge. Extended x-ray absorption fine-structure (EXAFS) spect…
View article: Experiments and Simulations of Laser-Driven Tin Ejecta Microjets
Experiments and Simulations of Laser-Driven Tin Ejecta Microjets Open
View article: Nonplanar effects in simulations of laser-driven ejecta microjet experiments
Nonplanar effects in simulations of laser-driven ejecta microjet experiments Open
Recent experiments of laser-driven ejecta microjets performed at OMEGA 60 reveal tortuous jets whereby the jets appear to deviate from their initial trajectory as they travel in vacuum. To understand these data, we perform two dimensional …
View article: Time-resolved X-ray diffraction diagnostic development for the National Ignition Facility
Time-resolved X-ray diffraction diagnostic development for the National Ignition Facility Open
We present the development of an experimental platform that can collect four frames of x-ray diffraction data along a single line of sight during laser-driven, dynamic-compression experiments at the National Ignition Facility. The platform…
View article: Frustraum 1100 Experimental Campaign on the National Ignition Facility
Frustraum 1100 Experimental Campaign on the National Ignition Facility Open
View article: Analysis and mitigation of an oscillating background on hybrid complementary metal-oxide semiconductor (hCMOS) imaging sensors at the National Ignition Facility
Analysis and mitigation of an oscillating background on hybrid complementary metal-oxide semiconductor (hCMOS) imaging sensors at the National Ignition Facility Open
Nanosecond-gated hybrid complementary metal-oxide semiconductor imaging sensors are a powerful tool for temporally gated and spatially resolved measurements in high energy density science, including inertial confinement fusion, and in lase…
View article: Extended X-ray absorption fine structure of dynamically-compressed copper up to 1 terapascal
Extended X-ray absorption fine structure of dynamically-compressed copper up to 1 terapascal Open
View article: Structures of strong shocks in low-density helium and neon gases
Structures of strong shocks in low-density helium and neon gases Open
Strong shocks are essential components in many high-energy-density environments such as inertial confinement fusion implosions. However, the experimental measurements of the spatial structures of such shocks are sparse. In this paper, the …
View article: First large capsule implosions in a frustum-shaped <i>hohlraum</i>
First large capsule implosions in a frustum-shaped <i>hohlraum</i> Open
We report on the first indirect-drive implosions driven by a dual conical frustum-shaped hohlraum denoted “frustraum” and the experimental tuning campaigns leading up to two layered implosions. The campaign used 1.2 and 1.4 mm inner radius…
View article: Thermal transport in warm dense matter revealed by refraction-enhanced x-ray radiography with a deep-neural-network analysis
Thermal transport in warm dense matter revealed by refraction-enhanced x-ray radiography with a deep-neural-network analysis Open
Transport properties of high energy density matter affect the evolution of many systems, ranging from the geodynamo in the Earth’s core, to hydrodynamic instability growth in inertial confinement fusion capsules. Large uncertainties of the…