Engineering topics

Romero, Dustin Heinz

Publications and source records attributed to Romero, Dustin Heinz.

7 records

DOE OSTI2019

Deflagration-to-detonation transition in Bullseye powder

A series of compaction experiments was conducted to evaluate the mechanical, reactive, and deflagration-to-detonation transition behavior in Alliant Bullseye powder. Using a novel application of photonic Doppler velocimetry and light fibers, the experiments measured both compaction and combustion waves in porous beds of Bullseye subjected to impact by gun-driven pistons. Relationships between initial piston velocity and transition distance are shown. Comparison is made between the Bullseye response and that found in classic Type I DDT.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗

DOE OSTI2015

Low Adiabat Compression of Liquid Deuterium Filled Cylindrical Liners to 0.1?2 Gbar.

We report on experiments where cylindrical beryllium liners filled with liquid deuterium were compressed to extreme pressure and density with current pulse shaping. In one set of experiments the pressure at stagnation is inferred to be & 100 Mbar using penetrating radiography. A peak liner convergence ratio (initial radius over final radius) of 7.6 was measured resulting in an average deuterium density of 10 g=cm 3 and areal density of 0.45 g=cm 2 . The stagnation shock propagating radially outward through the liner wall was directly measured with a strength of ≈ 120 Mbar. In a second set of experiments the liner was imploded to a peak convergence of 19 resulting in a density of 55 g=cm 3 and areal density of 0.5 g=cm 2 . The pressure at stagnation in this experiment is estimated to be 2 Gbar. This platform enables the study of high-pressure, high-density, implosion deceleration and stagnation dynamics at spatial scales that are readily diagnosable (R ~ 0.1 -- 0.4 mm). Thus, these experiments are directly relevant to both Inertial Con nement Fusion and the study of material properties under extreme conditions.

Knapp, Patrick↗

DOE OSTI2015