Accession Number:

ADA326339

Title:

The Study of Shock Launching in Silicon by Pulsed X-Ray Diffraction.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Wark, J. S.
• Whitlock, R. R.
• Hauer, A.
• Swain, J. E.
• Solone, P. J.

Report Date:

1987-03-24

Pagination or Media Count:

11.0

Abstract:

Multikilobar shocks were launched into a single crystal of 111 silicon overcoated with 1000 A aluminum and a 25 micron transparent plastic layer by irradiation with a 1 nsec pulse of 1.06 microcron laser light at 0.8-8 J cmexp -2. Peak lattice compressions densities were directly measured and shocked lattice stresses inferred as a function of irradiance and time by Bragg diffracting a short 100 psec burst of probing x-rays through the shock launching region. Compressions of up to 4 were measured, corresponding to stresses of order 70 Kbar, at irradiances of 4 x 10exp 9 W cmexp -2.

Descriptors:

• *X RAY DIFFRACTION
• *SHOCK(MECHANICS)
• *STRAIN(MECHANICS)
• *LASER BEAMS
• *SILICON
• SINGLE CRYSTALS
• PULSED LASERS
• ALUMINUM
• LAUNCHING
• IRRADIATION
• HUGONIOT EQUATIONS
• BRAGG ANGLE

Subject Categories:

• Lasers and Masers
• Nuclear Physics and Elementary Particle Physics
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE