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Joseph Fowler (Assoc)
Joseph Fowler is an experimental physicist in the Quantum Sensors Group at the NIST Boulder Laboratories. He joined NIST after a period working with arrays of superconducting microwave-frequency detectors in the Atacama Cosmology Telescope. His research focuses on the use of superconducting x-ray and gamma-ray sensors with very high energy resolution. He specializes in data analysis and scientific computing, including the complex software required to operate arrays of high-speed sensors and the analytic tools required for extraction of accurate energy values from them. He is involved in projects to make world-leading metrological measurements of x-ray emission and absorption processes; 3-dimensional x-ray computed tomography of objects at 100 nm spatial resolution; and many other measurements with superconducting sensors at NIST, x-ray synchrotrons, and radio-isotope analysis labs. He has written or co-authored over 200 publications in spectroscopy, observational cosmology, statistical analysis, and cosmic-ray measurements. He has contributed to work by NIST teammates that has won NIST Gold, Silver, and Bronze Medals.
Research Interests
- Metrology of fundamental x-ray parameters such as x-ray fluorescence emission.
- Nanometer-scale x-ray computed tomography of microelectronics.
- Development of scientific computing software for high-precision analysis of data from superconducting microcalorimeters.
- New applications of precision x-ray spectroscopy.
Awards
- NIST Physical Measurement Laboratory Distinguished Associate (2015, 2017, and 2020)
