Zobrazeno 1 - 10
of 18
pro vyhledávání: '"R. G. McQueen"'
Publikováno v:
Journal of Applied Physics. 80:6129-6141
Sound speeds, at pressure, and the overdriven Hugoniot were measured for the plastic‐bonded explosive PBX‐9501. The two curves intersect at the Chapman–Jouguet (CJ) state because of the sonic condition D=c+u. This permitted a novel determinatio
Publikováno v:
AIP Conference Proceedings.
Measured release wave speeds in shock-loaded copper give information on high-pressure elastic properties up to the solid-liquid phase boundary at 2.32±0.05 Mbar. For impact pressures above 2.65±0.06 Mbar, the shocked state is completely melted copp
Publikováno v:
AIP Conference Proceedings.
Type 316 stainless steel has been characterized for its high‐pressure, shock‐wave response. Measurements have been made of shock‐wave and particle velocity, and of sound velocity. Our preliminary results for shock and particle velocity have bee
Publikováno v:
AIP Conference Proceedings.
The optical analyzer technique has proved to be a useful means of obtaining wave velocities at high pressures. Stepped wedges of the investigated material emit shock, and later, rarefaction waves into a transparent analyzer covering the material. The
Autor:
R. G. McQueen, Donald G. Isaak
Publikováno v:
Journal of Geophysical Research. 95:21753
Sapphire and lithium fluoride have been used as windows in shock wave experiments to transmit reflected light from lasers to perform velocity measurements and to measure thermal radiation for temperature measurements, while maintaining substantial pr
Publikováno v:
The Journal of Chemical Physics. 80:5203-5218
Hugoniot data for polytetrafluoroethylene (PTFE) have been reported. These data can be fitted by two linear us–up Hugoniots which indicate the existence of a phase change. As usual for polymers, a linear low‐pressure us–up fit does not extrapol
Autor:
R. G. McQueen
Publikováno v:
Review of Scientific Instruments. 54:875-878
A new system has been developed for determining the writing speed of sweeping image cameras. In this system the time intervals between light pulses from the image of a small objective slit as seen by a photomultiplier tube through a pair of slits at
Publikováno v:
Review of Scientific Instruments. 53:245-250
An optical technique to determine rarefaction wave velocities is described. The technique utilizes the property that many transparent materials emit copious radiation when shocked to high pressures. The usual method of producing a rarefaction wave by
Autor:
R. G. McQueen, S. P. Marsh
Publikováno v:
Journal of Applied Physics. 31:1253-1269
Plane‐wave explosive systems were used to accelerate thin metal plates to high velocities. Shock pressures resulting from the collision of these driver plates with a stationary target plate are approximately three times greater than the original sh
Autor:
R. G. McQueen, S. P. Marsh
Publikováno v:
Journal of Geophysical Research. 71:1751-1756
Shock-wave compressions have been measured on Fe and on Fe alloyed with 10, 18, and 26% Ni to 1.8 Mb. It is found that at a given pressure the density increases in a reasonable manner with increasing Ni content. This refutes the work and conclusions