A5007400611- Nuclear Issues and Defense
- Economic Sanctions and International Relations
- Middle East and Rwanda Conflicts
- Laser-Plasma Interactions and Diagnostics
- Nuclear Physics and Applications
- Global Energy Security and Policy
- Global Peace and Security Dynamics
- Security, Politics, and Digital Transformation
- Laser-induced spectroscopy and plasma
- Advanced X-ray Imaging Techniques
- French Urban and Social Studies
- International Relations and Foreign Policy
- Nuclear reactor physics and engineering
- Crime Patterns and Interventions
- Terrorism, Counterterrorism, and Political Violence
- Homelessness and Social Issues
- Nuclear and radioactivity studies
- French Historical and Cultural Studies
- European and Russian Geopolitical Military Strategies
- Laser Design and Applications
- Socioeconomic Development in MENA
- Cold Fusion and Nuclear Reactions
- Canadian Identity and History
- Education, sociology, and vocational training
- Market Dynamics and Volatility
King's College London
2012-2018
The London College
2016
Creative Commons
2016
Lawrence Livermore National Laboratory
1992-2013
British Nuclear Medicine Society
2007
In an experimental study of the physics fast ignition, characteristics hot electron source at laser intensities up to 1020 W cm−2 have been measured and a diagnosis heating depth by electrons has initiated. Generation with more than 30% efficiency observed. Preliminary data suggest temperatures kT in range 300–800 eV.
Measurements have been made of the in-flight dynamics imploding capsules indirectly driven by laser energies 1–1.7 MJ at National Ignition Facility [Miller et al., Nucl. Fusion 44, 228 (2004)]. These experiments were part Campaign [Landen Phys. Plasmas 18, 051002 (2011)] to iteratively optimize inputs required achieve thermonuclear ignition in laboratory. Using gated or streaked hard x-ray radiography, a suite ablator performance parameters, including time-resolved radius, velocity, mass,...
Neutron yields are measured at the National Ignition Facility (NIF) by an extensive suite of neutron activation diagnostics. Neutrons interact with materials whose reaction cross sections threshold just below fusion production energy, providing accurate measure primary unscattered neutrons without contribution from lower-energy scattered neutrons. Indium samples mounted on diagnostic instrument manipulators in NIF target chamber, 25–50 cm source, to 2.45 MeV deuterium-deuterium through...
Intense laser (>1021 W/cm2) driven hard x-ray sources offer a new alternative to conventional electron accelerator bremsstrahlung sources. These considerable simplicity in design and cost advantage for multiple axis views have the potential much higher spatial temporal resolution than is achievable with We begun series of experiments using Petawatt system at LLNL determine these radiography applications. Absolutely calibrated spectra extending 20 MeV high radiographs through ρr⩾150...
Neutron time-of-flight spectra from inertial confinement fusion experiments with tritium-filled targets have been measured at the National Ignition Facility. These represent a significant improvement in energy resolution and statistics over previous measurements, afford first definitive observation of peak resulting sequential decay through ground state (5)He low reaction energies E(c.m.) 100 </~ keV. To describe spectrum, we developed an R-matrix model that accounts for interferences...
In January 2015, French society was shocked by a sequence of fatal attacks at the offices satirical magazine Charlie Hebdo and kosher supermarket in Paris. wake these tragic events, many social political commentators interpreted killings as an assault on freedom expression core values liberty, equality laïcité. Prime Minister Manuel Valls described perpetrators disciples Islamofascism. More than this, terrorists were represented extreme manifestation deviant nihilistic ‘other’—largely...
In the age of 'Big Data', potential value open-source information for intelligence-related purposes is widely recognised. Of late, progress in this space has increasingly become associated with software that can expand our ability to gather, filter, interrelate and manipulate data through automated processes. The trend towards automation both innovative necessary. However, techno-centric efforts replace human analysts finely crafted algorithms across board, from collection synthesis analysis...
For the past decade, much attention has been devoted to potential consequences of a nuclear-armed Iran. Yet binary 'acquisition/restraint' lens through which Iranian nuclear issue is frequently viewed limiting. There now evidence suggest that Iran engaged in strategy based on hedging, rather than an outright pursuit bomb. This does not change need contain Tehran's proliferation potential, yet it add another layer complexity challenge. will retain low level latency whatever final outcome...
In February 2012, Iran announced its willingness to resume negotiations with the Western powers. This statement followed in wake of a damning report by International Atomic Energy Agency (IAEA) Board Governors and imposition additional sanctions international community on an Iranian economy already under pressure. Tehran's announcement also coincided increased speculation regarding Israeli military strike nuclear facilities. At same time, however, this seemingly positive step appeared be...