title: Time-resolved areal-density measurements with proton spectroscopy in spherical implosions.
abstract: The temporal history of the target areal-density near peak compression of direct-drive spherical target implosions has been inferred with 14.7-MeV deuterium-helium-3 D3He proton spectroscopy of the 60-beam, 30-kJ UV OMEGA laser system. The target areal-density grows by a factor of approximately 8 during the time of neutron-production ( approximately 400 ps) before reaching 123+/-16 mg/cm(2) at peak compression in the implosion of a 950-micrometer-diam, 20-micrometer-thick plastic CH capsule filled with 4 atm of D3He fuel.
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, 250 East River Road Rochester, New York 14623, USA.
authors.forename: V A
authors.initials: VA
authors.lastname: Smalyuk
authors.forename: P B
authors.initials: PB
authors.lastname: Radha
authors.forename: J A
authors.initials: JA
authors.lastname: Delettrez
authors.forename: V Yu
authors.initials: VY
authors.lastname: Glebov
authors.forename: V N
authors.initials: VN
authors.lastname: Goncharov
authors.forename: D D
authors.initials: DD
authors.lastname: Meyerhofer
authors.forename: S P
authors.initials: SP
authors.lastname: Regan
authors.forename: S
authors.initials: S
authors.lastname: Roberts
authors.forename: T C
authors.initials: TC
authors.lastname: Sangster
authors.forename: J M
authors.initials: JM
authors.lastname: Soures
authors.forename: C
authors.initials: C
authors.lastname: Stoeckl
authors.forename: J A
authors.initials: JA
authors.lastname: Frenje
authors.forename: C K
authors.initials: CK
authors.lastname: Li
authors.forename: R D
authors.initials: RD
authors.lastname: Petrasso
authors.forename: F H
authors.initials: FH
authors.lastname: Séguin