title: Fast Heating of Imploded Core with Counterbeam Configuration.
abstract: A tailored-pulse-imploded core with a diameter of 70  μm is flashed by counterirradiating 110 fs, 7 TW laser pulses. Photon emission (>40  eV) from the core exceeds the emission from the imploded core by 6 times, even though the heating pulse energies are only one seventh of the implosion energy. The coupling efficiency from the heating laser to the core using counterirradiation is 14% from the enhancement of photon emission. Neutrons are also produced by counterpropagating fast deuterons accelerated by the photon pressure of the heating pulses. A collisional two-dimensional particle-in-cell simulation reveals that the collisionless two counterpropagating fast-electron currents induce mega-Gauss magnetic filaments in the center of the core due to the Weibel instability. The counterpropagating fast-electron currents are absolutely unstable and independent of the core density and resistivity. Fast electrons with energy below a few MeV are trapped by these filaments in the core region, inducing an additional coupling. This might lead to the observed bright photon emissions.
authors: The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: Y
authors: Y
authors: Mori
authors: The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: Y
authors: Y
authors: Nishimura
authors: The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: R
authors: R
authors: Hanayama
authors: The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: S
authors: S
authors: Nakayama
authors: The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: K
authors: K
authors: Ishii
authors: The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: Y
authors: Y
authors: Kitagawa
authors: Hamamatsu Photonics, K. K. 1820 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: T
authors: T
authors: Sekine
authors: Hamamatsu Photonics, K. K. 1820 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: N
authors: N
authors: Sato
authors: Hamamatsu Photonics, K. K. 1820 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: T
authors: T
authors: Kurita
authors: Hamamatsu Photonics, K. K. 1820 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: T
authors: T
authors: Kawashima
authors: Hamamatsu Photonics, K. K. 1820 Kurematsuchou, Nishi-ku, Hamamatsu 431-1202, Japan.
authors: H
authors: H
authors: Kan
authors: Advanced Material Engineering Division, Toyota Motor Corporation, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan.
authors: O
authors: O
authors: Komeda
authors: Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan.
authors: T
authors: T
authors: Nishi
authors: Aichi Synchrotron Radiation Center, Minamiyamaguchi-cho, Seto-shi, Aichi-ken 489-0965, Japan.
authors: H
authors: H
authors: Azuma
authors: Green Mobility Collaborative Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan.
authors: T
authors: T
authors: Hioki
authors: Green Mobility Collaborative Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan.
authors: T
authors: T
authors: Motohiro
authors: Institute for Laser Technology, 1-8-4 Utsubo-honmachi, Nishi-ku, Osaka 550-0004, Japan.
authors: A
authors: A
authors: Sunahara
authors: Department of Physics, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA.
authors: Y
authors: Y
authors: Sentoku
authors: National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan.
authors: E
authors: E
authors: Miura