Company Filing History:
1 out of 3 
1 out of 1 Years Active: 2013
Title: Irina Stefania Stefanescu: Innovator in Photomultiplier Technology
Introduction
Irina Stefania Stefanescu is a notable inventor based in Deep River, CA. She has made significant contributions to the field of photomultiplier technology, holding 2 patents that showcase her innovative spirit and technical expertise.
Latest Patents
One of her latest inventions is the Microstructure Photomultiplier Assembly (MPA). This assembly enables the effective conversion of light signals into readily-detectable electrical signals. The MPA consists of a photocathode followed by electron-multiplying plates made from an insulating substrate. These plates are designed to minimize contaminants that could poison the photocathode. Each plate is coated with a conductive layer and a secondary electron-emissive material, which produces secondary electrons when struck by incoming electrons. The plates are perforated with channels to promote efficient electron transfer and acceleration under an applied voltage. An anode collects the electrons and generates an electrical signal, all contained within a vacuum enclosure.
Another significant patent is the fast neutron detector featuring an open-structured hydrogenous radiator. This detector includes a solid hydrogen-containing material that converts impinging neutrons into recoil protons. A surrounding gas interacts with the protons to release electrons, which are then drifted away by an electric field. An electron detector monitors these drifted electrons, sensing the original neutrons. This technology is advantageous for applications such as fast neutron detection and imaging.
Career Highlights
Irina has worked with companies such as Bubble Technology Industries Inc. and Bubble Technology Industry Inc. Her work has significantly advanced the field of neutron detection and photomultiplier technology.
Collaborations
Throughout her career, Irina has collaborated with notable individuals, including Hugh Robert Andrews and Marius Facina. These collaborations have contributed to her innovative projects and patents.
Conclusion
Irina Stefania Stefanescu is a pioneering inventor whose work in photomultiplier technology and neutron detection has made a lasting impact in her field. Her patents reflect her dedication to innovation and her ability to solve complex technical challenges.