Capsule implosions for continuum x-ray backlighting of opacity samples at the National Ignition Facility.
Phys Plasmas
; 24(6): 063301, 2017 Jun.
Article
en En
| MEDLINE
| ID: mdl-29104422
ABSTRACT
Direct drive implosions of plastic capsules have been performed at the National Ignition Facility to provide a broad-spectrum (500-2000 eV) X-ray continuum source for X-ray transmission spectroscopy. The source was developed for the high-temperature plasma opacity experimental platform. Initial experiments using 2.0 mm diameter polyalpha-methyl styrene capsules with â¼20 µm thickness have been performed. X-ray yields of up to â¼1 kJ/sr have been measured using the Dante multichannel diode array. The backlighter source size was measured to be â¼100 µm FWHM, with â¼350 ps pulse duration during the peak emission stage. Results are used to simulate transmission spectra for a hypothetical iron opacity sample at 150 eV, enabling the derivation of photometrics requirements for future opacity experiments.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Phys Plasmas
Año:
2017
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Article
País de afiliación:
Estados Unidos