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A computational study of x-ray emission from laser-irradiated Ge-doped foams
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10.1063/1.3460817
/content/aip/journal/pop/17/7/10.1063/1.3460817
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/7/10.1063/1.3460817
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Electron density contours at 0.6 ns for the target of Omega shot number 51167 as simulated with the DCA non-LTE atomic model and Spitzer–Harm electron thermal conductivities. The closed red curve shows the outline of the Be can that contains the Ge-doped silica plasma. Only one quadrant is shown; the contours have rotational symmetry around the can axis (radial coordinate ) and reflection symmetry in the midplane (the plane at axial coordinate ). The laser beams enter from the right.

Image of FIG. 2.
FIG. 2.

Profiles of electron temperature along the can axis at times ranging from 0.2 ns (right-most black curve) to 0.8 ns (left-most blue curve) in steps of 0.1 ns as simulated with the DCA non-LTE atomic model and Spitzer–Harm electron thermal conductivities.

Image of FIG. 3.
FIG. 3.

Electron temperature contours at (a) 0.7 ns and (b) 1.0 ns as simulated with the DCA non-LTE atomic model and Spitzer–Harm electron thermal conductivities. The closed red curve shows the outline of the Be can that contains the Ge-doped silica plasma. Only one quadrant is shown; the contours have rotational symmetry around the can axis (radial coordinate ) and reflection symmetry in the midplane (the plane at axial coordinate ). The laser beams enter from the right.

Image of FIG. 4.
FIG. 4.

X-ray emitted power as a function of time in (a) photon energies of 0–3.5 keV and (b) photon energies of 9–11 keV as measured on Omega shot number 51167 (black curves), as simulated with the DCA non-LTE atomic model (blue curves), and as simulated with the XSN non-LTE atomic model (red curves).

Image of FIG. 5.
FIG. 5.

Maximum electron temperature on axis as a function of time, as simulated with the DCA non-LTE atomic model (blue curve), and as simulated with the XSN non-LTE atomic model (red curve).

Image of FIG. 6.
FIG. 6.

Profile of the axial component of plasma velocity along the can axis at 2.5 ns, as simulated with the DCA non-LTE atomic model (blue curve), and as simulated with the XSN non-LTE atomic model (red curve). Positive velocities are out (away from can’s center, which is at axial coordinate ), negative are in (toward can’s center).

Image of FIG. 7.
FIG. 7.

Accumulated x-ray emitted spectral energy as a function of photon energy at four times, (a) as simulated with the DCA non-LTE atomic model, and (b) as simulated with the XSN non-LTE atomic model.

Image of FIG. 8.
FIG. 8.

X-ray spectra from Omega shot number 39152 (somewhat less energy into a smaller can than in shot number 51167) as measured with the Henway crystal spectrometer (see Ref. 15).

Image of FIG. 9.
FIG. 9.

X-ray emitted power as a function of time in (a) photon energies of 0–3.5 keV and (b) photon energies of 9–11 keV as measured on Omega shot number 51167 (black curves), as simulated with the DCA non-LTE atomic model and Spitzer–Harm electron thermal conductivities (blue curves), and as simulated with the DCA non-LTE atomic model and Lee–More electron thermal conductivities (red curves).

Image of FIG. 10.
FIG. 10.

Electron temperature contours at 0.6 ns, (a) as simulated with the DCA non-LTE atomic model and Spitzer–Harm electron thermal conductivities, and (b) as simulated with the DCA non-LTE atomic model and Lee–More electron thermal conductivities. The closed red curve shows the outline of the Be can that contains the Ge-doped silica plasma. Only one quadrant is shown; the contours have rotational symmetry around the can axis (radial coordinate ) and reflection symmetry in the mid-plane (the plane at ). The laser beams enter from the right.

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/content/aip/journal/pop/17/7/10.1063/1.3460817
2010-07-29
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A computational study of x-ray emission from laser-irradiated Ge-doped foams
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/7/10.1063/1.3460817
10.1063/1.3460817
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