Nanomaterials for ICF and HED Targets · Operated by Los Alamos National Security, LLC for the U.S....
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Operated by Los Alamos National Security, LLC for the U.S. Department of Energy’s NNSA U N C L A S S I F I E D Slide 1 Nanomaterials for ICF and HED Targets Christopher E. Hamilton & Kimberly A. DeFriend Obrey Image from P. M. Ajayan & J. M. Tour, Nature 2007, 447, 1066. LA-UR 11-05452
Transcript of Nanomaterials for ICF and HED Targets · Operated by Los Alamos National Security, LLC for the U.S....
Operated by Los Alamos National Security, LLC for the U.S. Department of Energy’s NNSA
U N C L A S S I F I E D Slide 1
Nanomaterials for ICF and HED Targets
Christopher E. Hamilton & Kimberly A. DeFriend Obrey
Image from P. M. Ajayan & J. M. Tour, Nature 2007, 447, 1066. LA-UR 11-05452
Operated by Los Alamos National Security, LLC for the U.S. Department of Energy’s NNSA
U N C L A S S I F I E D
Nanomaterials for ICF and HED Targets: Outline
Slide 2
Nanomaterials: what & why
Nanocarbon: what & why
Nanocarbon silica aerogel composites
Vertically aligned nanotube arrays
Image from P. M. Ajayan & J. M. Tour, Nature 2007, 447, 1066.
Operated by Los Alamos National Security, LLC for the U.S. Department of Energy’s NNSA
U N C L A S S I F I E D
Nanomaterials:
Slide 3
Images: NanoOpticalMaterials Inc., Drexel Univ., Michael Strock, Rice U.
Metal, metal oxide nanocrystals (colloids)
Semiconductor nanocrystals: (quantum dots)
Metal, semionductor nanorods, nanowires
Nano C
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U N C L A S S I F I E D
Nanomaterials in targets: “homogeneous” backlighters
Slide 4
Metal, metal oxide nanocrystals (colloids)
Semiconductor nanocrystals: (quantum dots)
Metal, semionductor nanorods, nanowires
Nano C
Image: L to R: blank aerogel, SWNT gel, Au colloid gel, CeF3 nanoparticle gel.
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U N C L A S S I F I E D
Nanocarbon:
Fullerene
Single-Walled Carbon Nanotubes (SWNTs)
Graphene & Graphene Oxide (GO)
Slide 5
Image: Geim & Novoselov, Nature Mater. 2007, 6, 183.
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U N C L A S S I F I E D Slide 6
Nanocarbon: for targets? Enhancement of mech. props
Optical properties: • NIR fluorescence • blackbody absorber
Electrical properties • Low-V field emission • Ballistic –e transport
Image: Geim & Novoselov, Nature Mater. 2007, 6, 183; N. T. Alvarez et al., ACS App. Mater. Interfaces 2010, 2, 1851.
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U N C L A S S I F I E D
H-bonding?
Modest strength enhancement
Maintain optical transparency
Mechanical strength: GO and SWNTs in aerogel
Slide 7
C. E. Hamilton et al., MRS. Symp. Proc. 2010, 1258, R05-11.
Operated by Los Alamos National Security, LLC for the U.S. Department of Energy’s NNSA
U N C L A S S I F I E D Slide 8
Fluorescent SWNT aerogels
Homogeneous, porous, optically transparent monoliths
Retention of SWNT emission, blueshifted
SWNTs exposed, responsive to environment
5 mm
J. G. Duque, C E. Hamilton et al., ACS Nano 2011, 5, 6686.
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U N C L A S S I F I E D Slide 9
SWNTs for Laser-driven Hard X-ray Sources
Bagchi et al. (2011): • Multiwalled nanotube target • 100x increased hard x-ray flux vs. Cu • 3 orders of magnitude reduction in ion debris
from S. Bagchi et al., Phys. Plasmas 2011, 18, 014502.
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U N C L A S S I F I E D Slide 10
SWNTs for Laser-driven Hard X-ray Sources
Trident shot: SWNT buckypaper • comparable to Bagchi et al. • 1000x more x-ray flux vs. diamond target • very low C ion numbers
Future: VA-SWNTs, high Z doping
from N. T. Alvarez, C. E. Hamilton et al., ACS App. Mater. Interfaces 2010, 2, 1851.
Operated by Los Alamos National Security, LLC for the U.S. Department of Energy’s NNSA
U N C L A S S I F I E D
Future Outlook
Simple applications • Off the shelf dopants for backlighting
Advanced applications: • Exploit optoelectronic properties?
Carbon nanotubes: • ion fast ignition • hard x-rays
Slide 11
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U N C L A S S I F I E D Slide 12
Acknowledgments
LANL SWNT collaborators: • Juan Duque, Steve Doorn, Andrew Dattelbaum, Gautam Gupta, Jared Crochet
Trident experimenters • Manuel Hegelich, Cort Gautier, Daniel Jung
LANL Target Fab • Brian, Deanna, Jim, Robert, Derek, Blaine, Frank, Gerry, John, Doug, and Ron
Selected References: • S. Bagchi et al., Phys. Plasmas 2011, 18, 014502. • N. T. Alvarez et al., ACS App. Mater. Interfaces 2010, 2, 1851. • J. G. Duque et al., ACS Nano 2011, 5, 6686. • C. E. Hamilton et al., MRS. Symp. Proc. 2010, 1258, R05-11.
