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Titanium and germanium lined hohlraums and halfraums as multi-keV x-ray radiators
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10.1063/1.3130263
/content/aip/journal/pop/16/5/10.1063/1.3130263
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/5/10.1063/1.3130263

Figures

Image of FIG. 1.
FIG. 1.

Targets are hohlraum (bottom) or halfraum made of plastic with titanium or germanium liner deposited onto the inner wall. Laser beam cones at 42° and 59° are added for both types of target. Diagnostic names and directions of observation are represented on the halfraum drawing (top image).

Image of FIG. 2.
FIG. 2.

Typical waveforms for the SG1018 and ALPHA501P laser pulse shapes.

Image of FIG. 3.
FIG. 3.

Normalized x-ray power vs time for the Ti--type hohlraum target irradiated by both sides with the ALPHA501P pulse shape (shot no. 41886). The nature of the filters used for each DMX channel is given in the legend in addition to the respective spectral bandwidth.

Image of FIG. 4.
FIG. 4.

Normalized x-ray power vs time for the Ti--type hohlraum target irradiated by both sides with the ALPHA501P pulse shape (shot no. 41889). The nature of the filters used for each DMX channel is given in the legend in addition to the respective spectral bandwidth.

Image of FIG. 5.
FIG. 5.

Normalized x-ray power vs time for the Ti--type hohlraum target irradiated by both sides with the SG1018 pulse shape (shot no. 41891) from DMX low energy channels (left) and DMX high energy channels (right). The nature of the filters used for each DMX channel is given in the legend in addition to the respective spectral bandwidth.

Image of FIG. 6.
FIG. 6.

Normalized x-ray power vs time for the Ti--type hohlraum target irradiated by both sides with the SG1018 pulse shape (shot no. 41890) from DMX low energy channels (left) and DMX high energy channels (right). The nature of the filters used for each DMX channel is given in the legend in addition to the respective spectral bandwidth.

Image of FIG. 7.
FIG. 7.

Titanium detailed spectra of -shell emission lines from HENWAY spectrometer for the first series of shots. Photon energy ranges are (a) 4.6–5.1 keV and (b) 5.1–7 keV.

Image of FIG. 8.
FIG. 8.

Germanium detailed spectra obtained from HENWAY spectrometer for the second series of shots from 9 to 14 keV as photon energy range.

Image of FIG. 9.
FIG. 9.

SSC-A streak camera images show titanium emission between 4 and 6 keV vs time for comparison between Ti--type hohlraum (left), Ti--type hohlraum (middle) and Ti-halfraum (right).

Image of FIG. 10.
FIG. 10.

Spectral lineouts from SSC-A streak cameras images to compare emission spectra at the time of maximum x-ray production for Ti--type hohlraum (no. 41891), Ti--type hohlraum (no. 41890) and Ti-halfraum (no. 46697) with SG1018 laser pulse shape.

Image of FIG. 11.
FIG. 11.

Temporal lineouts from SSC-A streak cameras images to compare x-ray power of titanium line from Ti--type hohlraum (no. 41891), Ti--type hohlraum (no. 41890) and Ti-halfraum (no. 46697).

Image of FIG. 12.
FIG. 12.

Pinhole camera images show titanium emission obtained with SG1018 pulse shape from Ti--type hohlraum (no. 41891 left), Ti--type hohlraum (no. 41890 right).

Image of FIG. 13.
FIG. 13.

Pinhole camera images show Ti-halfraum emission with single side irradiation toward P8 for (no. 46697 left) and Ge-halfraum one (no. 46704 right image).

Image of FIG. 14.
FIG. 14.

Pinhole camera images show germanium emission from Ge-hohlraum two sides irradiation (no. 46701 left) and Ge-hohlraum single side irradiation toward P5 (no. 46702 middle).

Image of FIG. 15.
FIG. 15.

X-ray framing camera images showing titanium emission vs time with 1 ns squared pulse shape for Ti--type hohlraum (no. 41890 left), Ti--type hohlraum (no. 41890 right column).

Image of FIG. 16.
FIG. 16.

X-ray framing camera images showing germanium emission vs time with 1 ns squared pulse shape from Ge-hohlraum two sides irradiation (no. 46701 left column), Ge-hohlraum one side irradiation toward P5 (no. 46702 the second column from left) and Ge-halfraum one side irradiation toward P8 (no. 46704 the third column from left) and Ti-halfraum (no. 46697 right column).

Image of FIG. 17.
FIG. 17.

Summary of multi-keV CEs for a large variety of target kinds.

Tables

Generic image for table
Table I.

Targets definition and dimensions.

Generic image for table
Table II.

Laser energies on target and backscattered energy considerations.

Generic image for table
Table III.

Titanium lines, transition levels, and respective photon energies (Ref. 29–34).

Generic image for table
Table IV.

Germanium lines, transition levels, and respective photon energies (Refs. 29–34).

Generic image for table
Table V.

Titanium x-ray energy normalized by laser energy per steradian measured in the direction of the diagnostic and CEs given into assuming isotropic emission.

Generic image for table
Table VI.

Germanium x-ray energy normalized by laser energy per steradian measured in the direction of the diagnostic and CEs given into assuming isotropic emission.

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/content/aip/journal/pop/16/5/10.1063/1.3130263
2009-05-19
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Titanium and germanium lined hohlraums and halfraums as multi-keV x-ray radiators
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/5/10.1063/1.3130263
10.1063/1.3130263
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