Ryan Royle
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View article: Optimizing laser coupling, matter heating, and particle acceleration from solids using multiplexed ultraintense lasers
Optimizing laser coupling, matter heating, and particle acceleration from solids using multiplexed ultraintense lasers Open
Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology limitations. Here, we investigate how to optimize their coupling with solid targets. Ex…
View article: Investigating mechanisms of state localization in highly ionized dense plasmas
Investigating mechanisms of state localization in highly ionized dense plasmas Open
We present experimental observations of K_{β} emission from highly charged Mg ions at solid density, driven by intense x rays from a free electron laser. The presence of K_{β} emission indicates the n=3 atomic shell is relocalized for high…
View article: Driving Iron plasmas to stellar core conditions using extreme x-ray radiation
Driving Iron plasmas to stellar core conditions using extreme x-ray radiation Open
We report here on experiments where we have created and diagnosed exactly solid-density iron plasmas at temperatures in excess of 10 million Kelvin (～ 1 keV) and electron densities greater than 2×10 24 cm −3 . This has been achieved by foc…
View article: Investigating Mechanisms of State Localization in Highly-Ionized Dense Plasmas
Investigating Mechanisms of State Localization in Highly-Ionized Dense Plasmas Open
We present the first experimental observation of K$_β$ emission from highly charged Mg ions at solid density, driven by intense x-rays from a free electron laser. The presence of K$_β$ emission indicates the $n=3$ atomic shell is relocaliz…
View article: Optimizing laser coupling, matter heating, and particle acceleration from solids using multiplexed ultraintense lasers
Optimizing laser coupling, matter heating, and particle acceleration from solids using multiplexed ultraintense lasers Open
Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology limitations. Here, we investigate how to optimize their coupling with solid targets. Ex…
View article: X-ray Spectroscopic Studies of a Solid-Density Germanium Plasma Created by a Free Electron Laser
X-ray Spectroscopic Studies of a Solid-Density Germanium Plasma Created by a Free Electron Laser Open
The generation of solid-density plasmas in a controlled manner using an X-ray free electron laser (XFEL) has opened up the possibility of diagnosing the atomic properties of hot, strongly coupled systems in novel ways. Previous work has co…
View article: Probing the Electronic Structure of Warm Dense Nickel via Resonant Inelastic X-Ray Scattering
Probing the Electronic Structure of Warm Dense Nickel via Resonant Inelastic X-Ray Scattering Open
The development of bright free-electron lasers (FEL) has revolutionized our ability to create and study matter in the high-energy-density (HED) regime. Current diagnostic techniques have been successful in yielding information on fundament…
View article: Volumetric heating of nanowire arrays to keV temperatures using kilojoule-scale petawatt laser interactions
Volumetric heating of nanowire arrays to keV temperatures using kilojoule-scale petawatt laser interactions Open
We present picosecond-resolution streaked K-shell spectra from 400 nm-diameter nickel nanowire arrays, demonstrating the ability to generate large volumes of high energy density plasma when combined with the longer pulses typical of the la…
View article: Kinetic modeling of x-ray laser-driven solid Al plasmas via particle-in-cell simulation
Kinetic modeling of x-ray laser-driven solid Al plasmas via particle-in-cell simulation Open
Solid-density plasmas driven by intense x-ray free-electron laser (XFEL) radiation are seeded by sources of nonthermal photoelectrons and Auger electrons that ionize and heat the target via collisions. Simulation codes that are commonly us…