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Ryan P. Fitzgerald (Fed)

Ryan Fitzgerald is a physicist in the NIST Radiation Physics division with a focus on development of primary standards for radionuclides for multiple applications (medical, energy, environmental, etc.). He is part of multiple collaborations exploring new and improved methods for measuring radiation and radioactive decay.

NRC Postdoc Opportunities

Projects & Collaborations

Publications

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Patents (2018-Present)

Graph inset shows plots of measurements obtained at NIST exhibiting linear temperature dependence for Fiber Bragg Gratings and Photonic Ring Resonators on a Chip.

Photonic Calorimeter

NIST Inventors
Ronald Tosh , Zeeshan Ahmed , Ryan P. Fitzgerald and Nikolai Klimov
The calorimeter uses embedded, nanofabricated photonic sensors to enable micro-scale spatial resolution of dose (energy) distributions and gradients. It presents an alternative to thermistors used in conventional calorimeters for radiation dosimetry, comprising photonic sensors for in-situ dose and
An array of photonic dosimeters subjected to ionizing radiation.

Photonic Dosimeter

NIST Inventors
Ronald Tosh , Zeeshan Ahmed , Ryan P. Fitzgerald and Nikolai Klimov
NIST scientists have developed a photonic device whose resonance characteristics (such as quality factor, peak position, and free spectral range) change in a predictable way in response to the interaction of radiation with the sensor and/or its surroundings. The invention consists of one or more
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Created May 21, 2019, Updated November 27, 2024
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