Details

Autor(en) / Beteiligte

• Berzak Hopkins, L F
• Meezan, N B
• Le Pape, S
• Divol, L
• Mackinnon, A J
• Ho, D D
• Hohenberger, M
• Jones, O S
• Kyrala, G
• Milovich, J L
• Pak, A
• Ralph, J E
• Ross, J S
• Benedetti, L R
• Biener, J
• Bionta, R
• Bond, E
• Bradley, D
• Caggiano, J
• Callahan, D
• Cerjan, C
• Church, J
• Clark, D
• Döppner, T
• Dylla-Spears, R
• Eckart, M
• Edgell, D
• Field, J
• Fittinghoff, D N
• Gatu Johnson, M
• Grim, G
• Guler, N
• Haan, S
• Hamza, A
• Hartouni, E P
• Hatarik, R
• Herrmann, H W
• Hinkel, D
• Hoover, D
• Huang, H
• Izumi, N
• Khan, S
• Kozioziemski, B
• Kroll, J
• Ma, T
• MacPhee, A
• McNaney, J
• Merrill, F
• Moody, J
• Nikroo, A
• Patel, P
• Robey, H F
• Rygg, J R
• Sater, J
• Sayre, D
• Schneider, M
• Sepke, S
• Stadermann, M
• Stoeffl, W
• Thomas, C
• Town, R P J
• Volegov, P L
• Wild, C
• Wilde, C
• Woerner, E
• Yeamans, C
• Yoxall, B
• Kilkenny, J
• Landen, O L
• Hsing, W
• Edwards, M J

Titel

First high-convergence cryogenic implosion in a near-vacuum hohlraum

Ist Teil von

• Physical review letters, 2015-05, Vol.114 (17), p.175001-175001, Article 175001

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2015

Link zum Volltext

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• Recent experiments on the National Ignition Facility [M. J. Edwards et al., Phys. Plasmas 20, 070501 (2013)] demonstrate that utilizing a near-vacuum hohlraum (low pressure gas-filled) is a viable option for high convergence cryogenic deuterium-tritium (DT) layered capsule implosions. This is made possible by using a dense ablator (high-density carbon), which shortens the drive duration needed to achieve high convergence: a measured 40% higher hohlraum efficiency than typical gas-filled hohlraums, which requires less laser energy going into the hohlraum, and an observed better symmetry control than anticipated by standard hydrodynamics simulations. The first series of near-vacuum hohlraum experiments culminated in a 6.8 ns, 1.2 MJ laser pulse driving a 2-shock, high adiabat (α∼3.5) cryogenic DT layered high density carbon capsule. This resulted in one of the best performances so far on the NIF relative to laser energy, with a measured primary neutron yield of 1.8×10(15) neutrons, with 20% calculated alpha heating at convergence ∼27×.