James A. Fedchak

National Institute of Standards and Technology — United States

Decision Sciences · Social Sciences

14h-index758citations63works0.72yr avg
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Research Topics

Scientific Measurement and Uncertainty Evaluation(28), Advanced Frequency and Time Standards(18), Cold Atom Physics and Bose-Einstein Condensates(16), Atomic and Subatomic Physics Research(16), Advanced Sensor Technologies Research(12)

Publications63 total

Effect of glancing collisions in the cold-atom vacuum standard
Physical review. A/Physical review, A·2025· 2 citedOpen Access
On the effect of "glancing" collisions in the cold atom vacuum standard
arXiv (Cornell University)·2024Open Access
The digital NIST: steps toward the digital transformation of NIST’s measurement services
2024Open Access
Accurate measurement of the loss rate of cold atoms due to background gas collisions for the quantum-based cold atom vacuum standard
AVS Quantum Science·2023· 19 citedOpen Access
Accurate measurement of the loss rate of cold atoms due to background gas collisions for the quantum-based cold atom vacuum standard
arXiv (Cornell University)·2023Open Access
C1.1 - One-Step Traceability with NIST on a Chip: A Case for the Emergence of Quantum-Based Methods for Metrology and Sensing of Pressure, Vacuum, Temperature, Electric Fields, Mass, Force, and Torque, all enabled by the New SI
Lectures·2023Open Access
Precise quantum measurement of vacuum with cold atoms
Review of Scientific Instruments·2022· 14 cited
Comparison of two multiplexed portable cold-atom vacuum standards
AVS Quantum Science·2022Open Access
A constant pressure flowmeter for extreme-high vacuum
Metrologia·2022· 6 citedOpen Access
Erratum: Elastic rate coefficients for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">Li</mml:mi><mml:mo>+</mml:mo><mml:msub><mml:mi mathvariant="normal">H</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> collisions in the calibration of a cold-atom vacuum standard [Phys. Rev. A <b>99</b>, 042704 (2019)]
Physical review. A/Physical review, A·2022· 14 citedOpen Access
Erratum: Collisions of room-temperature helium with ultracold lithium and the van der Waals bound state of HeLi [Phys. Rev. A <b>101</b>, 012702 (2020)]
Physical review. A/Physical review, A·2022· 14 citedOpen Access
THE DIGITAL NIST: CHALLENGES AND OPPORTUNITIES IN THE DIGITAL TRANSFORMATION OF NIST’S CALIBRATION SERVICES
2022· 2 citedOpen Access
Stability of bakeable capacitance diaphragm gauges
Vacuum·2021· 1 citedOpen Access
$Λ$-enhanced gray molasses in a tetrahedral laser beam geometry
arXiv (Cornell University)·2021Open Access
Progress towards comparison of quantum and classical vacuum standards
Measurement Sensors·2021· 8 citedOpen Access
Outgassing rate comparison of seven geometrically similar vacuum chambers of different materials and heat treatments
Journal of Vacuum Science & Technology B Nanotechnology and Microelectronics Materials Processing Measurement and Phenomena·2021· 15 citedOpen Access
A radiofrequency voltage-controlled current source for quantum spin manipulation
Review of Scientific Instruments·2020· 2 citedOpen Access
Progress toward a cold-atom based vacuum standard and pressure gauge
Bulletin of the American Physical Society·2020
Collisions of room-temperature helium with ultracold lithium and the van der Waals bound state of HeLi
Physical review. A/Physical review, A·2020· 23 citedOpen Access
Nuclear Spin-Dependent Parity Violation in Light Polyatomic Molecules
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts·2020
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Frequent Co-authors

Julia Scherschligt(36), Daniel S. Barker(24), Stephen Eckel(24), Makfir Sefa(13), Nikolai N. Klimov(12), Eite Tiesinga(10), Zeeshan Ahmed(8), Eric B. Norrgard(7), Jay H. Hendricks(6), Constantinos Makrides(6), Karl Jousten(5), Jacob E. Ricker(4), Michael Bible(4), Matthew R. Hartings(4), Dana R. Defibaugh(4), Adriaan C. Carter(3), R. U. Datla(3), Kenta Arai(3), Patrick Egan(2), Jack Stone(2)