Browsing Patents by Author "McKeever, Stephen W. S."
Now showing items 1-6 of 6
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Method for Determining an Unknown Absorbed Dose of Radiation Using Optically Stimulated Luminescence
McKeever, Stephen W. S.; Akselrod, Mark S.; Markey, Brian G.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 1999-04-06)A bimodal method for determining an unknown absorbed dose of radiation. An irradiated material is illuminated with ultraviolet or visible light and the luminescence which is emitted from the material is detected. The ... -
Method for the Fast Determination of an Unknown Absorbed Dose of Radiation with High Sensitivity Using Optically Stimulated Luminescence
McKeever, Stephen W. S.; Akselrod, Mark S.; Markey, Brian G.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 1999-10-05)The optically stimulated luminescence generated from a luminescent material having a relatively long lifetime of luminescence is measured by using short pulses of laser light stimulation and detecting luminescence only ... -
Method of Preparing Detection Materials for Use in Uv Detection Using Phototransferred Thermoluminescence
Colyott, Leslie E.; Akselrod, Mark S.; McKeever, Stephen W. S.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 2002-07-02)The instant invention teaches a method of preparing a luminescent detecting material for use in UV dosimetry which utilizes phototransferred luminescence. The detecting material has a set of shallow dosimetry traps for ... -
Optically Stimulated Luminescence Radiation Dosimetry Method to Determine Dose Rates During Radiotherapy Procedures
Gaza, Razvan; Akselrod, Mark S.; McKeever, Stephen W. S.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 2005-08-30)There is provided a system and method for estimating radiation exposure in real time or in near-real time while a dosimeter is being irradiated. In the preferred arrangement, OSL will be used to calculate estimates of the ... -
Optically Stimulated Luminescence Radiation Dosimetry Method to Determine Integrated Doses and Dose Rates and a Method to Extend the Upper Limit of Measureable Absorbed Radiation Doses During Irradiation
Polf, Jerimy C.; Gaza, Razvan; McKeever, Stephen W. S.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 2006-02-21)There is provided herein a system and method for obtaining measurements of radiation exposure in real time using OSL and for obtaining improved accurate OSL measurements over a greater range of radiation exposures. In a ... -
System and Method for the Detection of Abnormal Radiation Exposures Using Pulsed Optically Stimulated Luminescence
Akselrod, Mark S.; McKeever, Stephen W. S.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 2001-11-13)This invention relates generally to luminescence techniques for imaging radiation fields and, more specifically, to the use of experimental and mathematical methods to distinguish between dynamic irradiation and static--or ...