Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Jonathan Dean (IntlAssoc)

Jonathan Dean is a postdoctoral research fellow in the Quantum Sensors Division of the Physical Measurement Laboratory at NIST in Boulder, CO. He joined NIST in September 2024 after completing his PhD in theoretical atomic physics in Melbourne, Australia. Transitioning from theory to experiment, Jonathan’s postdoctoral work focuses on a novel method for high-precision, SI-traceable X-ray energy measurements. Using a steerable pulsed laser and superconducting cryogenic microcalorimeters, this technique enables parts-per-million level precision measurement of X-ray spectra in semiconductor materials to support the CHIPS Act. Jonathan also collaborates on projects with CERN, NASA, and the Berlin Synchrotron (BESSY II) to install and operate transition-edge sensor (TES) microcalorimeter arrays. Additionally, he supports in-house highly charged ion research within the Quantum Sensors Division.

Research Interests

  • X-ray spectroscopy and fundamental parameters: Measuring X-ray spectra and atomic parameters with unprecedented precision to improve foundational data.
  • Atomic structure theory: Using high accuracy high resolution empirical data to scrutinize ab initio theory
  • SI Traceability in Microcalorimetry: Developing novel calibration and measurement schemes to link cryogenic microcalorimeter X-ray data directly to SI standards.

Awards

Publications

A study of the position-dependent response of thermal kinetic inductance detectors through the use of cryogenic beam steering

Author(s)
Ian Fogarty Florang, Jonathan Dean, Joseph Fowler, Tom-Erik Haugen, Shannon Hoogerheide, Daniel Jardin, Hans Mumm, Nathan Nakamura, Matthew Natale, Galen O'Neil, Nathan Ortiz, Jeremy Paster, Thomas Rao, Avirup Roy, Daniel Swetz, Joel Ullom, Michael Vissers, Paul Szypryt
There are a number of considerations when designing a low-temperature detector for the best possible energy resolution. One that has been particularly...
Created August 30, 2024, Updated July 15, 2026
Was this page helpful?