Explanipedia

Enhanced glass dynamics facilitated by soft interfaces Open

P. Luo, Zixuan Lin, K. K. Jha, Sarah Wolf, Shivajee Govind , et al. · 2025

A persistent mystery in glass physics is the origin of the rapid slowdown of relaxations during supercooling toward Tg (glass transition temperature). Theoretical studies suggest that growing elastic barriers are critical in this phenomeno…

Focussing Protons from a Kilojoule Laser for Intense Beam Heating Using Proximal Target Structures Open

C. McGuffey, J Kim, M. S. Wei, Phil Nilson, S. N. Chen , et al. · 2024

High-density stable glasses formed on soft substrates Open

P. Luo, Sarah Wolf, Shivajee Govind, R. B. Stephens, Dong Hyup Kim , et al. · 2024

Overview of LANL short-pulse ion acceleration activities Open

Kirk Flippo, Mark Schmitt, Dustin Offermann, J. A. Cobble, D. C. Gautier , et al. · 2024

An overview of Los Alamos National Laboratory's activities related to short-pulse ion acceleration is presented. LANL is involved is several projects related to Inertial Confinement Fusion (Fast Ignition) and Laser-Ion Acceleration. LANL h…

Data from A National Bowel Cancer Screening Programme using FIT: Achievements and Challenges Open

Diarmuid P. O’Donoghue, Kieran Sheahan, Padraic MacMathúna, R. B. Stephens, Helen M. Fenlon , et al. · 2023

Colorectal cancer accounts for 11% of all cancer-related deaths in Ireland. With the aim of diagnosing these cancers at an earlier stage, and detecting premalignant lesions, the National Screening Service (NSS) offered a fecal immunochemic…

BowelScreen leaflet from A National Bowel Cancer Screening Programme using FIT: Achievements and Challenges Open

Diarmuid P. O’Donoghue, Kieran Sheahan, Padraic MacMathúna, R. B. Stephens, Helen M. Fenlon , et al. · 2023

Explanatory leaflet to participants explaining sharing of data with family doctors and colonoscopy units where relevant

Data from A National Bowel Cancer Screening Programme using FIT: Achievements and Challenges Open

Diarmuid O’Donoghue, Kieran Sheahan, Padraic MacMathúna, R. B. Stephens, Helen M. Fenlon , et al. · 2023

Colorectal cancer accounts for 11% of all cancer-related deaths in Ireland. With the aim of diagnosing these cancers at an earlier stage, and detecting premalignant lesions, the National Screening Service (NSS) offered a fecal immunochemic…

BowelScreen leaflet from A National Bowel Cancer Screening Programme using FIT: Achievements and Challenges Open

Diarmuid P. O’Donoghue, Kieran Sheahan, Padraic MacMathúna, R. B. Stephens, Helen M. Fenlon , et al. · 2023

Explanatory leaflet to participants explaining sharing of data with family doctors and colonoscopy units where relevant

Hot Electron Generation and Transport Using K(alpha) Emission Open

K. U. Akli, R. B. Stephens, M. H. Key, T. Bartal, F. N. Beg , et al. · 2021

We have conducted experiments on both the Vulcan and Titan laser facilities to study hot electron generation and transport in the context of fast ignition. Cu wires attached to Al cones were used to investigate the effect on coupling effic…

Polyamorphism of vapor-deposited amorphous selenium in response to light Open

Aixi Zhang, Yi Jin, Tianyi Liu, R. B. Stephens, Zahra Fakhraai · 2020

Significance Amorphous selenium (a-Se) has a complicated molecular structure with overcoordinated defects and dangling bonds. This light-sensitive structure can undergo significant changes including bond breakage, reconnection, and defect …

Focussing Protons from a Kilojoule Laser for Intense Beam Heating using Proximal Target Structures Open

C. McGuffey, J. Kim, M. S. Wei, P. M. Nilson, S. N. Chen , et al. · 2020

Proton beams driven by chirped pulse amplified lasers have multi-picosecond duration and can isochorically and volumetrically heat material samples, potentially providing an approach for creating samples of warm dense matter with condition…

A National Bowel Cancer Screening Programme using FIT: Achievements and Challenges Open

Diarmuid O’Donoghue, Kieran Sheahan, Padraic MacMathúna, R. B. Stephens, Helen M. Fenlon , et al. · 2018

Colorectal cancer accounts for 11% of all cancer-related deaths in Ireland. With the aim of diagnosing these cancers at an earlier stage, and detecting premalignant lesions, the National Screening Service (NSS) offered a fecal immunochemic…

Anomalous material-dependent transport of focused, laser-driven proton beams Open

J. Kim, C. McGuffey, D. C. Gautier, A. Link, G. E. Kemp , et al. · 2018

Reduced fast electron transport in shock-heated plasma in multilayer targets due to self-generated magnetic fields Open

C. McGuffey, J. May, T. Yabuuchi, Hiroshi Sawada, M. S. Wei , et al. · 2018

Fast electron transport has been studied in cold solid density CH, cold CH foam (200 mg / cm³), and CH plasma (40 eV 30 mg/cm³) targets—the latter created by shocking the CH foam with a 1.2 kJ long pulse laser and all…

Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas Open

L. C. Jarrott, C. McGuffey, F. N. Beg, A. A. Solodov, W. Theobald , et al. · 2017

Fast electron transport and spatial energy deposition are investigated in integrated cone-guided Fast Ignition experiments by measuring fast electron induced copper K-shell emission using a copper tracer added to deuterated plastic shells …

Observation of extremely strong shock waves in solids launched by petawatt laser heating Open

Kate Lancaster, A. P. L. Robinson, J. Pasley, P. Hakel, T. Ma , et al. · 2017

Understanding hydrodynamic phenomena driven by fast electron heating is important for a range of applications including fast electron collimation schemes for fast ignition and the production and study of hot, dense matter. In this work, de…

Calibration and characterization of a highly efficient spectrometer in von Hamos geometry for 7-10 keV x-rays Open

L. C. Jarrott, M. S. Wei, C. McGuffey, F. N. Beg, P.M. Nilson , et al. · 2017

We have built an absolutely calibrated, highly efficient, Bragg crystal spectrometer in von Hamos geometry. This zinc von Hamos spectrometer uses a crystal made from highly oriented pyrolytic graphite that is cylindrically bent along the n…

Investigation of laser pulse length and pre-plasma scale length impact on hot electron generation on OMEGA-EP Open

J. Peebles, M. S. Wei, Alexey Arefiev, C. McGuffey, R. B. Stephens , et al. · 2017

Here, a series of experiments studying pre-plasma's effect on electron generation and transport due to a high intensity laser were conducted on the OMEGA-EP laser facility. A controlled pre-plasma was produced in front of an aluminum foil …

Targets for high repetition rate laser facilities: needs, challenges and perspectives Open

Irene Prencipe, J. Fuchs, S. Pascarelli, Douglass Schumacher, R. B. Stephens , et al. · 2017

A number of laser facilities coming online all over the world promise the capability of high-power laser experiments with shot repetition rates between 1 and 10 Hz. Target availability and technical issues related to the interaction enviro…

Visualizing fast electron energy transport into laser-compressed high-density fast-ignition targets Open

L. C. Jarrott, M. S. Wei, C. McGuffey, A. A. Solodov, W. Theobald , et al. · 2016

Target Development for the National Ignition Campaign Open

A. V. Hamza, A. Nikroo, E T Alger, Nick Antipa, L. J. Atherton , et al. · 2015

Complex and precise research targets are required for the inertial confinement fusion (ICF) experiments conducted at the National Ignition Facility. During the National Ignition Campaign (NIC) the target development team embarked on and co…

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