Lithium niobate explosion monitor

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867239

Bundy, Charles H ^[1]; Graham, Robert A ^[2]; Kuehn, Stephen F ^[3]; Precit, Richard R ^[3]; Rogers, Michael S ^[3]

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1. Clearwater, FL
2. Los Lunas, NM
3. Albuquerque, NM

Monitoring explosive devices is accomplished with a substantially z-cut lithium niobate crystal in abutment with the explosive device. Upon impact by a shock wave from detonation of the explosive device, the crystal emits a current pulse prior to destruction of the crystal. The current pulse is detected by a current viewing transformer and recorded as a function of time in nanoseconds. In order to self-check the crystal, the crystal has a chromium film resistor deposited thereon which may be heated by a current pulse prior to detonation. This generates a charge which is detected by a charge amplifier.

• Research Organization: AT&T
• DOE Contract Number: AC04-76DP00789
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4893049
• OSTI ID: 867239
• Country of Publication: United States
• Language: English

Related Subjects

lithium
niobate
explosion
monitor
monitoring
explosive
devices
accomplished
substantially
z-cut
crystal
abutment
device
impact
shock
wave
detonation
emits
current
pulse
prior
destruction
detected
viewing
transformer
recorded
function
time
nanoseconds
self-check
chromium
film
resistor
deposited
thereon
heated
generates
charge
amplifier
charge amplifier
explosive device
lithium niobate
current pulse
shock wave
deposited thereon
film resistor
niobate crystal
explosive devices
chromium film
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