title: Magnetic field measurements via visible spectroscopy on the Z machine.
abstract: 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.
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: Gomez
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: S B
authors.initials: SB
authors.lastname: Hansen
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Peterson
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: D E
authors.initials: DE
authors.lastname: Bliss
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: A L
authors.initials: AL
authors.lastname: Carlson
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: D C
authors.initials: DC
authors.lastname: Lamppa
authors.affiliation: General Atomics, San Diego, California 92121, USA.
authors.forename: D G
authors.initials: DG
authors.lastname: Schroen
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
authors.forename: G A
authors.initials: GA
authors.lastname: Rochau