title: Fill-tube-induced mass perturbations on x-ray-driven, ignition-scale, inertial-confinement-fusion capsule shells and the implications for ignition experiments.
abstract: On the first inertial-confinement-fusion ignition facility, the target capsule will be DT filled through a long, narrow tube inserted into the shell. microg-scale shell perturbations Delta m' arising from multiple, 10-50 microm-diameter, hollow SiO2 tubes on x-ray-driven, ignition-scale, 1-mg capsules have been measured on a subignition device. Simulations compare well with observation, whence it is corroborated that Delta m' arises from early x-ray shadowing by the tube rather than tube mass coupling to the shell, and inferred that 10-20 microm tubes will negligibly affect fusion yield on a full-ignition facility.
authors.affiliation: Sandia National Laboratories, Albuquerque, New Mexico 87185-1193, USA.
authors.forename: G R
authors.initials: GR
authors.lastname: Bennett
authors.forename: M C
authors.initials: MC
authors.lastname: Herrmann
authors.forename: M J
authors.initials: MJ
authors.lastname: Edwards
authors.forename: B K
authors.initials: BK
authors.lastname: Spears
authors.forename: C A
authors.initials: CA
authors.lastname: Back
authors.forename: E W
authors.initials: EW
authors.lastname: Breden
authors.forename: P J
authors.initials: PJ
authors.lastname: Christenson
authors.forename: M E
authors.initials: ME
authors.lastname: Cuneo
authors.forename: K L
authors.initials: KL
authors.lastname: Dannenburg
authors.forename: C
authors.initials: C
authors.lastname: Frederick
authors.forename: K L
authors.initials: KL
authors.lastname: Keller
authors.forename: T D
authors.initials: TD
authors.lastname: Mulville
authors.forename: A
authors.initials: A
authors.lastname: Nikroo
authors.forename: K
authors.initials: K
authors.lastname: Peterson
authors.forename: J L
authors.initials: JL
authors.lastname: Porter
authors.forename: C O
authors.initials: CO
authors.lastname: Russell
authors.forename: D B
authors.initials: DB
authors.lastname: Sinars
authors.forename: I C
authors.initials: IC
authors.lastname: Smith
authors.forename: R M
authors.initials: RM
authors.lastname: Stamm
authors.forename: R A
authors.initials: RA
authors.lastname: Vesey