title: Low Fuel Convergence Path to Direct-Drive Fusion Ignition.
abstract: 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. Laser intensities below thresholds for laser plasma instability and cross beam energy transfer facilitate high hydrodynamic efficiency (∼10%).
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.|Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Kim
authors.initials: K
authors.lastname: Molvig
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Schmitt
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: B J
authors.initials: BJ
authors.lastname: Albright
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: E S
authors.initials: ES
authors.lastname: Dodd
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: N M
authors.initials: NM
authors.lastname: Hoffman
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: G H
authors.initials: GH
authors.lastname: McCall
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: S D
authors.initials: SD
authors.lastname: Ramsey