Patents by Inventor Iwona A. Pawelczak

Iwona A. Pawelczak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and plastic scintillator for discrimination of thermal neutron, fast neutron, and gamma radiation
    Patent number: 9650564
    Abstract: A scintillator material according to one embodiment includes a polymer matrix; a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount of 3 wt % or more; and at least one component in the polymer matrix, the component being selected from a group consisting of B, Li, Gd, a B-containing compound, a Li-containing compound and a Gd-containing compound, wherein the scintillator material exhibits an optical response signature for thermal neutrons that is different than an optical response signature for fast neutrons and gamma rays. A system according to one embodiment includes a scintillator material as disclosed herein and a photodetector for detecting the response of the material to fast neutron, thermal neutron and gamma ray irradiation.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 16, 2017
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Natalia P. Zaitseva, M. Leslie Carman, Michelle A. Faust, Andrew M. Glenn, H. Paul Martinez, Iwona A. Pawelczak, Stephen A. Payne, Keith E. Lewis
  • SYSTEM AND PLASTIC SCINTILLATOR FOR DISCRIMINATION OF THERMAL NEUTRON, FAST NEUTRON, AND GAMMA RADIATION
    Publication number: 20130299702
    Abstract: A scintillator material according to one embodiment includes a polymer matrix; a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount of 3 wt % or more; and at least one component in the polymer matrix, the component being selected from a group consisting of B, Li, Gd, a B-containing compound, a Li-containing compound and a Gd-containing compound, wherein the scintillator material exhibits an optical response signature for thermal neutrons that is different than an optical response signature for fast neutrons and gamma rays. A system according to one embodiment includes a scintillator material as disclosed herein and a photodetector for detecting the response of the material to fast neutron, thermal neutron and gamma ray irradiation.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Natalia P. Zaitseva, M Leslie Carman, Michelle A. Faust, Andrew M. Glenn, H. Paul Martinez, Iwona A. Pawelczak, Stephen A. Payne, Keith E. Lewis