Pressure/Temperature Sensitive Inorganic Phosphors
Abstract
A class of inorganic phosphors, such as rare earth doped lanthinum oxy-sulfide and Yttrium oxy-sulfide, show spectral emission characteristics that are strongly pressure and temperature dependent. The relative intensity of the spectral emission characteristics that are strongly pressure and temperature dependent. The relative intensity of the emission lines and the fluorescence decay time have indicated strong pressure dependence in the range of several kilobars. This property suggests that these inorganic phosphors could be applied as remotely operated pressure transducers. The intensity of the emissions has also been observed to show strong dependency upon temperature. Kistler gauges are presently used to monitor pressures. Prior vulnerability studies indicated that hydraulic pressures in excess of 100,000 psi were experienced when one gallon of stored liquid propellant was impacted by a shaped charge. These pressures exceed the upper limit of the Kistler gauges. In field use, large quantities will be housed in an armored or self-propelled howitzer. It is critical to measure the pressures developed in these larger quantities of stored propellant when impacted by a battlefield threat. This report discusses the potential for using organic phosphors to measure high pressures and temperatures. Inorganic phosphors, Lanthinum oxy sulfide, Yttrium oxy sulfide, Pressure transducer, Hydraulic pressures, Kistler gauges, Self propelled howitzer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1988
- Accession Number
- ADA199718
Entities
People
- Henry M. Borella
- Henry W. Offen
- W. D. Turley
- William O. Seals
Organizations
- United States Army Armament Research, Development and Engineering Center