Lithium niobate explosion monitor

Patent · Tue Jan 09 00:00:00 EST 1990

OSTI ID:6531475

Bundy, C H; Graham, R A; Kuehn, S F; Precit, R R; Rogers, M S

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: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-76DP00789; AC04-76DP00656
• Assignee: Dept. of Energy
• Patent Number(s): 4,893,049
• Application Number: 06/868,375
• OSTI ID: 6531475
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
PYROTECHNIC DEVICES
MONITORING
CRYSTALS
DETONATION WAVES
EXPLOSIVES
LITHIUM COMPOUNDS
MEASURING INSTRUMENTS
NIOBATES
PIEZOELECTRICITY
PIEZOMETRY
PRESSURE MEASUREMENT
ALKALI METAL COMPOUNDS
ELECTRICITY
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SHOCK WAVES
TRANSITION ELEMENT COMPOUNDS
440300* - Miscellaneous Instruments- (-1989)