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Title: Low Fuel Convergence Path to Direct-Drive Fusion Ignition

A new class of inertial fusion capsules is presented that combines multishell targets with laser direct drive at low intensity (2.8 × 10 14 W/cm 2) to achieve robust ignition. The targets consist of three concentric, heavy, metal shells, enclosing a volume of tens of μg of liquid deuterium-tritium fuel. Ignition is designed to occur well “upstream” from stagnation, with minimal pusher deceleration to mitigate interface Rayleigh-Taylor growth. As a result, laser intensities below thresholds for laser plasma instability and cross beam energy transfer facilitate high hydrodynamic efficiency (~10%).
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ;  [2] ;  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-16-20796
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1800136
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 25; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE (originally DOE/LANL); USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1410615
Alternate Identifier(s):
OSTI ID: 1259339

Molvig, Kim, Schmitt, Mark J., Albright, Brian James, Dodd, Evan S., Hoffman, Nelson M., McCall, Gene H., and Ramsey, Scott D.. Low Fuel Convergence Path to Direct-Drive Fusion Ignition. United States: N. p., Web. doi:10.1103/PhysRevLett.116.255003.
Molvig, Kim, Schmitt, Mark J., Albright, Brian James, Dodd, Evan S., Hoffman, Nelson M., McCall, Gene H., & Ramsey, Scott D.. Low Fuel Convergence Path to Direct-Drive Fusion Ignition. United States. doi:10.1103/PhysRevLett.116.255003.
Molvig, Kim, Schmitt, Mark J., Albright, Brian James, Dodd, Evan S., Hoffman, Nelson M., McCall, Gene H., and Ramsey, Scott D.. 2016. "Low Fuel Convergence Path to Direct-Drive Fusion Ignition". United States. doi:10.1103/PhysRevLett.116.255003. https://www.osti.gov/servlets/purl/1410615.
@article{osti_1410615,
title = {Low Fuel Convergence Path to Direct-Drive Fusion Ignition},
author = {Molvig, Kim and Schmitt, Mark J. and Albright, Brian James and Dodd, Evan S. and Hoffman, Nelson M. and McCall, Gene H. and Ramsey, Scott D.},
abstractNote = {A new class of inertial fusion capsules is presented that combines multishell targets with laser direct drive at low intensity (2.8 × 1014 W/cm2) to achieve robust ignition. The targets consist of three concentric, heavy, metal shells, enclosing a volume of tens of μg of liquid deuterium-tritium fuel. Ignition is designed to occur well “upstream” from stagnation, with minimal pusher deceleration to mitigate interface Rayleigh-Taylor growth. As a result, laser intensities below thresholds for laser plasma instability and cross beam energy transfer facilitate high hydrodynamic efficiency (~10%).},
doi = {10.1103/PhysRevLett.116.255003},
journal = {Physical Review Letters},
number = 25,
volume = 116,
place = {United States},
year = {2016},
month = {6}
}