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Streak spectroscopy and velocimetry of electrically exploded Ni/Al laminates
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10.1063/1.4776731
/content/aip/journal/jap/113/4/10.1063/1.4776731
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/4/10.1063/1.4776731

Figures

Image of FIG. 1.
FIG. 1.

(a) Fabrication process flow. (b) Microscope image of completed device.

Image of FIG. 2.
FIG. 2.

Streak spectrograph test setup.

Image of FIG. 3.
FIG. 3.

Streak spectrograph of a Ni/Al conductor heated from a current pulse originating in a 0.3 μF capacitor charged to 1.2 kV.

Image of FIG. 4.
FIG. 4.

Al, Ni, and Ni/Al normalized sample emission at 300 ns following the onset of emission, with major peaks identified.

Image of FIG. 5.
FIG. 5.

Emission intensity (solid lines) and specific electrical energy (dashed lines) vs. time for Al, Ni, and Ni/Al at 499.6 ± 1.5 nm. This wavelength range was near a set of spectral peaks common to all samples.

Image of FIG. 6.
FIG. 6.

Measured and predicted flyer velocities vs. time for a 2.8 μm thick Al bridge.

Image of FIG. 7.
FIG. 7.

Measured and corrected specific electrical power (P) and energy (Q) delivered to a 2.8 μm thick Al bridge. Corrected energy is based on Eq. (5) , and corrected power is based on the numerical derivative of corrected energy. Expected melt, atomization, and ionization events are also labeled along the measured energy curve.

Image of FIG. 8.
FIG. 8.

Measured and predicted flyer velocities vs. time for a 5.6 μm thick Al bridge and a 2.8 μm Ni bridge.

Image of FIG. 9.
FIG. 9.

Measured and predicted flyer velocities vs. time for a 2.6 μm thick, multilayered Ni/Al laminate bridge, along with measured and corrected electrical power curves normalized by bridge mass. The dashed predicted velocity curve does not account for exothermic mixing between Ni and Al, while the solid curve was predicted by an additional energy term in the model to account for this mixing.

Tables

Generic image for table
Table I.

Atomization and ionization energies for materials used in this study.

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/content/aip/journal/jap/113/4/10.1063/1.4776731
2013-01-22
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Streak spectroscopy and velocimetry of electrically exploded Ni/Al laminates
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/4/10.1063/1.4776731
10.1063/1.4776731
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