1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Using time-integrated Kα images to study refluxing and the extent of pre-plasmas in intense laser-plasma experiment
Rent:
Rent this article for
USD
10.1063/1.3656957
/content/aip/journal/pop/18/11/10.1063/1.3656957
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/11/10.1063/1.3656957
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic side-view of the buried cone targets (left) and a photograph taken under a microscope (right) from the Titan August, 2009 run.

Image of FIG. 2.
FIG. 2.

(Color online) Kα images for the eight buried cone shots corrected for the imager and detector viewing angles.

Image of FIG. 3.
FIG. 3.

(Color online) Kα corrected image lineouts showing the range of variation. Two lineouts (vertical and horizontal) were taken from each image.

Image of FIG. 4.
FIG. 4.

(Color online) Simulation geometry for the two buried cone targets used in the experiment: 190 μm cone (left) and 100 μm cone (right). The black line indicates the solid density contour, the grey line the simulation grid. The color scale on the right shows electron number density in cm−3 (log scale). The laser is incident from the left and focused at the origin. The GLL is modeled using the LSP conductor model and is shown in light blue.

Image of FIG. 5.
FIG. 5.

(Color online) Kα yield at two fluor depths: (a) 0 μm and (b) 25 μm for three test simulations: conductor model (black line), conductor with emission model turned on for the duration of the laser pulse (blue line or gray line in black and white version), and conductor with emission model applied at all times (red line or lightest line in black and white version).

Image of FIG. 6.
FIG. 6.

(Color online) Comparison between experiment and simulation using a 3.75 μm pre-plasma scale length. Normalized Kα lineouts are plotted for two different fluor depths: (a) 10 μm and (b) 100 μm. The range in the experimental data is shown as a gray band while the dashed black line represents the average signal. The Kα lineouts obtained from the simulation at the end of the run (at 20 ps) are shown as a red solid line (modeling the GLL) and dashed blue line (without modeling the GLL).

Image of FIG. 7.
FIG. 7.

(Color online) Time variation of the modeled Kα profiles for the 10 μm fluor depth for a target (a) without and (b) with a GLL. Signal is normalized to the peak value of the Kα signal at 20 ps.

Image of FIG. 8.
FIG. 8.

(Color online) Time variation of the modeled Kα profiles for the 100 μm fluor depth for a target (a) without and (b) with a GLL. Signal is normalized to the peak value of the Kα signal at 20 ps.

Image of FIG. 9.
FIG. 9.

(Color online) Kα signal from a 30 μm Cu fluor layer located on the back of the 245 μm target described in the text. No GLL was present. Signal is normalized to the peak value. Note the large pedestal present in both cases.

Image of FIG. 10.
FIG. 10.

(Color online) Comparison between experiment and simulation using 2.5 μm and 5 μm pre-plasma scale lengths. Normalized Kα lineouts are plotted for two different fluor depths: (a) 10 μm and (b) 100 μm. The range in the experimental data is shown as a gray band while the dashed black line represents the average signal. The Kα lineouts obtained from the simulation at the end of the run (at 20 ps) are shown as a blue (L = 2.5 μm) and a red (L = 5 μm) solid lines (or dark and light solid lines in black and white version).

Image of FIG. 11.
FIG. 11.

(Color online) Electron beam spot radius vs. pre-plasma scale length for the buried cone targets at two depths: (a) x = 0 μm and (b) x = 100 μm, using three different methods to measure the radius. The “direct” method did not use fitting functions; the other two methods used a fit to the indicated function.

Loading

Article metrics loading...

/content/aip/journal/pop/18/11/10.1063/1.3656957
2011-11-09
2014-04-23
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Using time-integrated Kα images to study refluxing and the extent of pre-plasmas in intense laser-plasma experiment
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/11/10.1063/1.3656957
10.1063/1.3656957
SEARCH_EXPAND_ITEM