Experimental study on laser entrance hole closure of hohlraum in ICF

Li Sanwei; Guo Liang; Li Qi; Li Xin; Hu Xin; Cao Zhurong; Hou Lifei; Wang Feng; Yang Jiamin; Jiang Shaoen; Ding Yongkun; Zhang Baohan

doi:10.11884/HPLPB201830.180046

Volume 30 Issue 5

May 2018

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Article Navigation > High Power Laser and Particle Beams > 2018 > 30(5): 050101

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Li Sanwei, Guo Liang, Li Qi, et al. Experimental study on laser entrance hole closure of hohlraum in ICF[J]. High Power Laser and Particle Beams, 2018, 30: 050101. doi: 10.11884/HPLPB201830.180046

Citation:

Li Sanwei, Guo Liang, Li Qi, et al. Experimental study on laser entrance hole closure of hohlraum in ICF[J]. High Power Laser and Particle Beams, 2018, 30: 050101. doi: 10.11884/HPLPB201830.180046

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Experimental study on laser entrance hole closure of hohlraum in ICF

doi: 10.11884/HPLPB201830.180046

1.
Research Center of Laser Fusion, CAEP, Mianyang 621900, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

Received Date: 2018-01-30
Rev Recd Date: 2018-03-04
Publish Date: 2018-05-15

Abstract

Abstract

On Shenguang Ⅲ laser facility, 32 laser beams were symmetrically injected a gas-filled hohlraum to create plasma situation which is close to the ignition condition. An X-ray framing camera on the polar station and an X-ray streak camera near the pole were utilized to obtain the temporal and spacial evolution X-ray images of the plasma from the hohlraum wall and near the laser entrance hole (LEH), which were used to analyse the LEH closure feature of the hohlraum with various LEH size. The experimental results clearly demonstrated the evolution of laser spot motion, plasma expanding near the LEH and closure of the LEH, which supplied the foundation to optimize the LEH dimension.
- hohlraum,
- plasma,
- laser entrance hole,
- laser entrance hole closure

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References(4)

References

[1]	Lindl J, Landen O, Edwards J, et al. Review of the National Ignition Campaign 2009-2012[J]. Phys Plasmas, 2014, 21: 020501.
[2]	MacLaren S A, Schneider M B, Widmann K, et al. Novel characterization of capsule X-ray drive at National Ignition Facility[J]. Phys Rev Lett, 2014, 112: 105003. doi: 10.1103/PhysRevLett.112.105003
[3]	Schneider M B, MacLaren S A, Widmann K, et al. The size and structure of the laser entrance hole in gas-filled hohlraums at the National Ignition Facility[J]. Phys Plasmas, 2015, 22: 122705. doi: 10.1063/1.4937369
[4]	Amendt P, Murphy T J, Hatchett S P. Novel symmetry tuning in Nova hohlraums using axial gold disks[J]. Phys Plasmas, 1996, 3: 4166. doi: 10.1063/1.871548

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