Magnetic field measurements via visible spectroscopy on the Z machine

Sandia's Z Machine uses its high current to magnetically implode targets relevant to inertial confinement fusion. Since target performance is highly dependent on the applied drive field, measuring magnetic field at the target is essential for accurate simulations. Recently, the magnetic field a...

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Bibliographic Details
Published in:Review of scientific instruments 2014-11, Vol.85 (11), p.11E609-11E609
Main Authors: Gomez, M R, Hansen, S B, Peterson, K J, Bliss, D E, Carlson, A L, Lamppa, D C, Schroen, D G, Rochau, G A
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
DOPED MATERIALS
ICF DEVICES
IMPLOSIONS
INERTIAL CONFINEMENT
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MAGNETIC FIELDS
PULSES
SODIUM
SPECTROSCOPY
VISIBLE SPECTRA
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Summary:Sandia's Z Machine uses its high current to magnetically implode targets relevant to inertial confinement fusion. Since target performance is highly dependent on the applied drive field, measuring magnetic field at the target is essential for accurate simulations. Recently, the magnetic field at the target was measured through splitting of the sodium 3s-3p doublet at 5890 and 5896 Å. Spectroscopic dopants were applied to the exterior of the target, and spectral lines were observed in absorption. Magnetic fields in excess of 200 T were measured, corresponding to drive currents of approximately 5 MA early in the pulse.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4891304