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Title: Lithium niobate explosion monitor

Abstract

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. 8 figs.

Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
7067421
Patent Number(s):
4893049 A
Application Number:
PPN: US 6-868375
Assignee:
Dept. of Energy, Washington, DC (United States) SNL; EDB-94-118392
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Patent File Date: 29 May 1986
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; EXPLOSIVES; MONITORING; MONITORS; DESIGN; OPERATION; BLAST EFFECTS; CRYSTALS; DETONATIONS; LITHIUM COMPOUNDS; NIOBATES; TIME MEASUREMENT; ALKALI METAL COMPOUNDS; MEASURING INSTRUMENTS; NIOBIUM COMPOUNDS; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 450000* - Military Technology, Weaponry, & National Defense

Citation Formats

Bundy, C.H., Graham, R.A., Kuehn, S.F., Precit, R.R., and Rogers, M.S. Lithium niobate explosion monitor. United States: N. p., 1990. Web.
Bundy, C.H., Graham, R.A., Kuehn, S.F., Precit, R.R., & Rogers, M.S. Lithium niobate explosion monitor. United States.
Bundy, C.H., Graham, R.A., Kuehn, S.F., Precit, R.R., and Rogers, M.S. Tue . "Lithium niobate explosion monitor". United States.
@article{osti_7067421,
title = {Lithium niobate explosion monitor},
author = {Bundy, C.H. and Graham, R.A. and Kuehn, S.F. and Precit, R.R. and Rogers, M.S.},
abstractNote = {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. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}