Martin A. Kramer

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A series of large-scale experiments were performed to measure heat transfer to a massive cylindrical calorimeter engulfed in a 30-minute circular-pool fire. The calorimeter inner surface temperature and the flame black body emissive power were measured at several locations as functions of time. An inverse conduction technique was used to determine the net(More)
The Container Analysis Fire Environment (CAFE) computer code is being developed at Sandia National Laboratories (SNL) to predict the response of massive spent nuclear fuel transport casks to a range of severe fire environments. It is designed for use in transportation risk and design studies. CAFE employs physics-based reaction chemistry and radiation heat(More)
Figure 1. a) CAFE Computational domain, b) Simulated fire, c) Thermocouple locations (c) ABSTRACT The goal of this work was to measure the temporally varying heat flux and surface temperature of a pipe calorimeter in a pool fire, and assess its uncertainty. Three large-scale fire tests were conducted at the Sandia National Laboratories outdoor fire test(More)
* Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin company, for the United States Department of Energy under Contract DE-AC04-94AL85000. INTRODUCTION A series of large-scale experiments were recently performed to measure heat transfer to a massive cylindrical calorimeter engulfed in a 30-minute circular-pool fire [1].(More)
A system of drift chambers is being built to replace the present spark chambers in the Brookhaven National Laboratory's Multiparticle Spectrometer. This system will handle a beam of ~ 3 million particles per second and have a resolution of 200 pm. A summary of the status of the chambers and the custom integrated circuits is presented. The data acquisition(More)
We have reconstructed images after a single pass through a thick, turbulent aberrator. The reconstructed image's resolution was independent of the presence, severity, and length of a hot-air aberrator (at least 50 times the collecting optics' depth of field). The slowly responding four-wave mixing medium, fluorescein-doped boric acid glass, averaged out(More)
A real-time holographic technique employing an optically addressed spatial light modulator was used to correct an incoherently illuminated image that had made a single pass through an aberrator. Aberrations that change slowly compared with the integration time of the spatial light modulator are fully corrected.
A new self-aligning geometry for real-time holographic image reconstruction for one-way imaging through a phase aberrator is demonstrated. The input beams are time multiplexed to isolate the diffracted image from the reference beams after the image beams propagate through the hologram. This geometry permits the image-bearing beam and the reference beams to(More)
We have observed accurate correction of laser-induced thermal blooming by optical phase conjugation. The thermal blooming produced up to a 36-fold increase in the far-field spot diameter and up to a 60-fold decrease in the far-field peak intensity. Stimulated Brillouin scattering was used as the phase-conjugate mirror with a reflectivity of 35% to 65%. A(More)