First measurements of deuterium-tritium and deuterium-deuterium fusion reaction yields in ignition-scalable direct-drive implosions

Forrest, C. J.; Radha, P. B.; Knauer, J. P.; Glebov, V. Yu.; Goncharov, V. N.; Regan, S. P.; Rosenberg, M. J.; Sangster, T. C.; Shmayda, W. T.; Stoeckl, C.; Gatu Johnson, M.

doi:10.1103/PhysRevLett.118.095002

Title: First measurements of deuterium-tritium and deuterium-deuterium fusion reaction yields in ignition-scalable direct-drive implosions

Journal Article · Fri Mar 03 00:00:00 EST 2017 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.118.095002· OSTI ID:1347567

Forrest, C. J. ^[1]; Radha, P. B. ^[1]; Knauer, J. P. ^[1]; Glebov, V. Yu. ^[1]; Goncharov, V. N. ^[1]; Regan, S. P. ^[1]; Rosenberg, M. J. ^[1]; Sangster, T. C. ^[1]; Shmayda, W. T. ^[1]; Stoeckl, C. ^[1]; Gatu Johnson, M. ^[2]

Univ. of Rochester, Rochester, NY (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

In this study, the deuterium-tritium (D-T) and deuterium-deuterium neutron yield ratio in cryogenic inertial confinement fusion (ICF) experiments is used to examine multifluid effects, traditionally not included in ICF modeling. This ratio has been measured for ignition-scalable direct-drive cryogenic DT implosions at the Omega Laser Facility using a high-dynamic-range neutron time-of-flight spectrometer. The experimentally inferred yield ratio is consistent with both the calculated values of the nuclear reaction rates and the measured preshot target-fuel composition. These observations indicate that the physical mechanisms that have been proposed to alter the fuel composition, such as species separation of the hydrogen isotopes, are not significant during the period of peak neutron production in ignition-scalable cryogenic direct-drive DT implosions.

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Research Organization:: Univ. of Rochester, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Contributing Organization:: Laboratory for Laser Energetics, University of Rochester, Rochester, NY

Grant/Contract Number:: NA0001944

OSTI ID:: 1347567

Alternate ID(s):: OSTI ID: 1345693

Report Number(s):: 2016-201; 1324; PRLTAO; 2016-201; 1324; 2279; TRN: US1700654

Journal Information:: Physical Review Letters, Vol. 118, Issue 9; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Interpreting the electron temperature inferred from x-ray continuum emission for direct-drive inertial confinement fusion implosions on OMEGA Cao, D.; Shah, R. C.; Regan, S. P. Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5112759	journal	August 2019
Kinetic physics in ICF: present understanding and future directions Rinderknecht, Hans G.; Amendt, P. A.; Wilks, S. C. Plasma Physics and Controlled Fusion, Vol. 60, Issue 6 https://doi.org/10.1088/1361-6587/aab79f	journal	April 2018
Spectral composition of thermonuclear particle and recoil nuclear emissions from laser fusion targets intended for modern ignition experiments Gus’kov, S. Yu; Il’in, D. V.; Perlado, J. M. Plasma Physics and Controlled Fusion, Vol. 60, Issue 8 https://doi.org/10.1088/1361-6587/aac739	journal	June 2018
The National Direct-Drive Inertial Confinement Fusion Program Regan, S. P.; Goncharov, V. N.; Sangster, T. C. Nuclear Fusion, Vol. 59, Issue 3 https://doi.org/10.1088/1741-4326/aae9b5	journal	December 2018
First Octahedral Spherical Hohlraum Energetics Experiment at the SGIII Laser Facility Huo, Wen Yi; Li, Zhichao; Chen, Yao-Hua Physical Review Letters, Vol. 120, Issue 16 https://doi.org/10.1103/physrevlett.120.165001	journal	April 2018

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