Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"LLNL"”.
-
Design of a Low Power Cargo Security Device Using a Micropower Ultra-Wideband Impulse Radar
… decades, Lawrence Livermore National Laboratory (LLNL) has been developing a micropower impulse radar capable of detecting objects and motion within a short to medium range. Due to its past uses for intrusion and motion detection, the LLNL micropower impulse radar is a top prospect for a sensor …
-
System thinking for success : adding structure to an unstructured process approach
… Lawrence Livermore National Laboratory (LLNL), that there are indications that they have become significantly align to the current System Thinking approaches. The success of LLNL's current processes and practices relies heavily on the experience and the expertise of individuals who can …
-
Design of Structural Stand for High-Precision Optics Microscopy
<p>Lawrence Livermore National Lab (LLNL) is home to the National Ignition Facility (NIF), the world’s largest and most energetic laser. Each of the 192 beamlines contains dozens of large optics, which require offline damage inspection using large, raster-scanning microscopes. The primary …
-
Gamma-Ray Spectroscopy Following High-Flux 14-Mev Neutron Activation
… at the Lawrence Livermore National Laboratory (LLNL), has been used for applications in activation analysis, inertial-confinement-fusion diagnostic development, and fission decay-heat studies. The fast-neutron flux from the RTNS-I is at least 50 times the maximum fluxes available from typical …
-
An improved method for measuring the absolute DD neutron yield and calibrating neutron time-of-flight detectors in inertial confinement fusion experiments
… and Lawrence Livermore National Laboratory (LLNL) have advanced ICF as a platform for stockpile stewardship and weapons physics, but also have contributed to basic science in high energy density regimes and for pursuing fusion an energy source. One of the primary goals of the ICF research …
-
Effects of Support Structure Geometry on SLM Induced Residual Stresses in Overhanging Features
… by Lawrence Livermore National Laboratory (LLNL), and trends observed in the model were validated experimentally.</p> <p>By comparing the distribution and magnitude of residual stresses, it was determined that reducing cooling rate gradients in overhanging features reduces the resulting …
-
The Effect of Heel Lifts on Ground Reaction Force Patterns and Lower Extremity Joint Angles in Subjects With Structural Leg Length Discrepancies
… short leg no lift (SLNL); (2) long leg no lift (LLNL); (3) short leg lift (SLL); and (4) long leg lift (LLL).
-
Using time-resolved nuclear diagnostics to probe kinetic/multi-ion physics and shock dynamics on OMEGA and the NIF
… at the Lawrence Livermore National Laboratory (LLNL), implosion dynamics from shock to compression are probed using the magnetic particle time-of-flight (magPTOF) diagnostic. magPTOF is designed to simultaneously measure the shock and compression timings in D 3 He-gas-filled implosions on the …
-
Enhanced combined effects in aluminized explosives by an innovative initiation system
… discrepancies of large-scale tests noted by LLNL, AFRL, NSWC-IH, and others. This work identifies the challenges centered around the size effect and the incomplete modeling of aluminum reactions. In order to better quantify the performance improvements of this new initiator design, revisions …
-
Design of a 5 Degree of Freedom Kinematic Stage for the Dual Crystal Backlighter Imager Diagnostic
<p>The National Ignition Facility (NIF) is home to the world’s most energetic laser. The facility is one of the leading centers in inertial confinement fusion (ICF) experiments to research and understand sustainable fusion energy. To fully document and understand the physics occurring during …