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Observing the shock to detonation transition in nitromethane with PDV [Slides]
Abstract not provided.
Exhaustively searching PDV waveforms using fast circular-convolution/cross-correlation to perform improved extraction of dynamic surface velocity [Slides]
Abstract not provided.
Non-uniform window phenomena and correction options for PDV [Slides]
Abstract not provided.
Yield and PDV Measurements of the Godiva-IV Critical Assembly
A high dynamic range, scinillator based detector, the MHD-240, was used to measure the gamma and neutron flux of several prompt critical bursts of the Godiva-IV assembly. The measurements provided the alpha and FWHM for several different burst temperatures. Calibrations of the MHD240 gamma and neutron sensitivity along with MCNP based simulation of the Godiva-IV assembly allowed us to also determine the total fission yield of the burst integrated over approximately 5 ms. In addition a Photo Doppler Velocimetry measurement was conducted to determine the surface motion vibrational frequency of Godiva-IV assembly during the bursts. The combined data were collected to be used as input to multi-physics simulation of the Godiva-IV assembly. This is a preliminary report, there is an ongoing effort to update the MCNP simulations used in the analysis and develop a correction for the room return component of the measured signal.
Yield and PDV Measurements of the Godiva-IV Critical Assembly (Preliminary Report)
A high dynamic range, scinillator based detector, the MHD-240, was used to measure the gamma and neutron flux of several prompt critical bursts of the Godiva-IV assembly. The measurements provided the alpha and FWHM for several different burst temperatures. Calibrations of the MHD240 gamma and neutron sensitivity along with MCNP based simulation of the Godiva-IV assembly will allow us to also determine the total fission yield of the burst integrated over approximately 5 ms. Work is ongoing to check the calibrations of the MHD-240, and improve the MCNP simulations. This is a preliminary report, and the fission yields reported here are not final and are likely inaccurate. The measured alpha and FWHM are not impacted by the calibration issues and are considered final.
PDV Hands-On Class: One Day Intensive [Slides]
The presentation describes various components at the LANSCE campus area at Los Alamos National Laboratory.
Reproducible High Precision PDV Observations of Subtle Radiation Drive Nuances in Photoionized Plasmas Driven by Z.
Abstract not provided.
Shock State Distributions in Porous Tantalum Using Multipoint PDV.
Abstract not provided.
Multi-point Electron Density Measurements Using Photonic Doppler Velocimetry (PDV)
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Using PDV to measure transverse and off-axis velocity
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HiFiPDV: A High Fidelity Analysis Program for Processing Single Velocity PDV Signals
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A novel Bayesian approach to PDV analysis
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Surface motion trigger system using PDV-like optical frequency shifts
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PDV as a Diagnostic Tool for Separation Mechanisms, Particle Impact, and Hypervelocity Testing
No abstract available
PDV Transfer Function Sensitivity Study Effect of Rover Mass Variations
No abstract available
PDV Transfer Function Sensitivity Study Effect of Rover Mass Variations
No abstract available