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Updated: May 29, 2026

Optical Trap Loading of Dielectric Microparticles In Air
Published on: February 5, 2017
Note: Multi-point measurement of |B| in the gas-dynamic trap with a spectral motional Stark effect diagnostic
A A Lizunov1, D J Den Hartog, A S Donin
1Budker Institute of Nuclear Physics, Novosibirsk, Russia. lizunov@inp.nsk.su
Abstract:
An upgraded spectral motional Stark effect diagnostic has been installed on the gas-dynamic trap (GDT) experiment to enable spatially resolved measurement of |B|. A new low-noise charge-coupled device detector, combined with enhancements of the diagnostic neutral beam, allows single-shot profile measurements. Previously only single-point motional Stark effect measurements were possible, and detector noise severely limited measurement precision, requiring multi-shot averaging. The plasma pressure profile in GDT is derived from the measured diamagnetic modification of |B| and used to examine the conditions of stable plasma confinement at high plasma pressure.
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