Searching for momentum enhancement in hypervelocity impacts

Journal Article · Mon Jan 01 04:00:00 EST 1990 · International Journal of Impact Engineering; (United States)

DOI:https://doi.org/10.1016/0734-743X(90)90088-D· OSTI ID:7015760

Stradling, G L; Idzorek, G C; Keaton, P W; Studebaker, J K ^[1]; Blossom, A A.H. ^[2]; Collopy, M T; Curling, Jr, H L ^[3]; Bergeson, S D ^[4]

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1. Los Alamos National Lab., NM (United States)
2. EG and G Energy Measurements Inc., Los Alamos, NM (United States)
3. Science Applications International Corp., Albuquerque, NM (United States)
4. Brigham Young Univ., Provo, UT (United States)

In conjunction with the Los Alamos National Laboratory hypervelocity microparticle impact (HMI) team effort to produce higher impact velocities and to understand the physics of crater formation and momentum transfer, the authors have implemented a low noise microphone as a momentum detector on both the 6 MV Van de Graaff and 85 KV test stand' particle accelerators. Calculations are presented showing that the impulse response of a circular membrane. When used as a momentum impulse detector, the microphone theoretically may detect impulses as small as 8.8 {times} 10{sup {minus}15} N s. Sensitivity of the microphone in this application is limited by the noise threshold of the electronic amplifiers and the ambient microphinic vibration of the system. Calculations lead the authors to anticipate detection of particles over the full range of the Van de Graaff acceleration capability and up to 7 km/s on the test stand. They present momentum enhancement data in the velocity range between 10 km/s and 20 km/s. Preliminary work is presented on momentum impulse calibration of the microphone using laser-pulse photon momentum as an impulse source.

• OSTI ID: 7015760
• Journal Information: International Journal of Impact Engineering; (United States), Journal Name: International Journal of Impact Engineering; (United States) Vol. 10; ISSN 0734-743X; ISSN IJIED
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450500* -- Military Technology
Weaponry
& National Defense-- Strategic Defense Initiative-- (1990-)
ACCELERATORS
AMPLIFIERS
BALLISTIC MISSILE DEFENSE
COLLISIONS
COMPUTERS
DETECTION
DIAGNOSTIC TECHNIQUES
ELECTRONIC EQUIPMENT
ELECTROSTATIC ACCELERATORS
EQUIPMENT
FUNCTIONS
IBM COMPUTERS
IMPACT SHOCK
IMPACT TESTS
LANL
MATERIALS TESTING
MEASURING INSTRUMENTS
MEASURING METHODS
MECHANICAL TESTS
MISSILE PROTECTION
MOMENTUM TRANSFER
NATIONAL DEFENSE
NATIONAL ORGANIZATIONS
PERFORMANCE
PROJECTILES
RESPONSE FUNCTIONS
TARGETS
TESTING
US DOE
US ORGANIZATIONS
VAN DE GRAAFF ACCELERATORS
VELOCITY