Nuclear imaging of the fuel assembly in ignition experiments | Zendy

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Nuclear imaging of the fuel assembly in ignition experiments

Author(s) -

G. P. Grim,

N. Guler,

F. E. Merrill,

G. L. Morgan,

C. R. Danly,

P. L. Volegov,

C. H. Wilde,

D. C. Wilson,

D. S. Clark,

D. E. Hinkel,

O. S. Jones,

Kumar Raman,

N. Izumi,

D. N. Fittinghoff,

Owen B. Drury,

E T Alger,

P. Arnold,

R. Ashabranner,

L J Atherton,

M. A. Barrios,

S. H. Batha,

P. M. Bell,

L. R. Benedetti,

R. L. Berger,

L. A. Bernstein,

L.V. Berzins,

R. Betti,

S. D. Bhandarkar,

R. M. Bionta,

D. L. Bleuel,

T. R. Boehly,

E. Bond,

M. W. Bowers,

D. K. Bradley,

G. Brunton,

Robert A. Buckles,

S. Burkhart,

R. Burr,

J. A. Caggiano,

D. A. Callahan,

D. T. Casey,

C. Castro,

P. M. Celliers,

C. Cerjan,

G. A. Chandler,

C. Choate,

Simon J. Cohen,

G. W. Collins,

G. W. Cooper,

J. R. Cox,

Jerry R. Cradick,

P. Datte,

E. L. Dewald,

P. Di Nicola,

J. M. Di Nicola,

L. Divol,

S. N. Dixit,

Rebecca DyllaSpears,

E. G. Dzenitis,

M. J. Eckart,

D. C. Eder,

D. H. Edgell,

M. J. Edwards,

J. H. Eggert,

R. B. Ehrlich,

Gaylen V. Erbert,

J. Fair,

D. R. Farley,

B. Felker,

Renée T. Fortner,

J. A. Frenje,

G. Frieders,

S. Friedrich,

M. Gatu Johnson,

C. R. Gibson,

E. Giraldez,

V. Yu. Glebov,

S. Glenn,

S. H. Glenzer,

G. Gururangan,

S. W. Haan,

Kelly Hahn,

B. A. Hammel,

A. V. Hamza,

E. P. Hartouni,

R. Hatarik,

S. P. Hatchett,

Christopher A. Haynam,

M. R. Hermann,

H. W. Herrmann,

D. G. Hicks,

J. P. Holder,

D. M. Holunga,

J. Horner,

W. W. Hsing,

H. Huang,

Mark C. Jackson,

K. S. Jancaitis,

D. Kalantar,

R. L. Kauffman,

Morris I. Kauffman,

S. F. Khan,

J. D. Kilkenny,

J. R. Kimbrough,

R. K. Kirkwood,

J. L. Kline,

J. P. Knauer,

K. Knittel,

Joachim Koch,

T. Kohut,

B. Kozioziemski,

K. Krauter,

G. W. Krauter,

A. L. Kritcher,

J. J. Kroll,

G. A. Kyrala,

K. N. La Fortune,

Greg LaCaille,

L. Lagin,

T. A. Land,

O. L. Landen,

Douglas W. Larson,

D. A. Latray,

R. J. Leeper,

T. Lewis,

S. Le Pape,

J. D. Lindl,

R. Lowe-Webb,

T. Ma,

B. J. MacGowan,

A. J. Mackin,

A. G. MacPhee,

Robert M. Malone,

T. N. Malsbury,

E. R. Mapoles,

C. D. Marshall,

D G Mathisen,

P. W. McKenty,

J. M. McNaney,

N. B. Meezan,

P. Michel,

J. L. Milovich,

J. D. Moody,

A. S. Moore,

Matthew Moran,

K. A. Moreno,

E. I. Moses,

D. H. Munro,

B. R. Nathan,

A. J. Nelson,

A. Nikroo,

Richard E. Olson,

C. D. Orth,

A. Pak,

E. S. Palma,

T. Parham,

P. K. Patel,

R. W. Patterson,

R. D. Petrasso,

Rahul Prasad,

J. E. Ralph,

S. P. Regan,

H. G. Rinderknecht,

H. F. Robey,

G. Ross,

C. L. Ruiz,

F.H. Séguin,

J. D. Salmonson,

T. C. Sangster,

J. D. Sater,

R. Saunders,

M. B. Schneider,

Dieter Schneider,

Michael Shaw,

N. Simanovskaia,

B. K. Spears,

P. T. Springer,

C. Stöeckl,

W. Stoeffl,

L. J. Suter,

C. A. Thomas,

R. Tommasini,

R. P. J. Town,

Albert Traille,

B. Van Wonterghem,

R. J. Wallace,

S. Weaver,

S. V. Weber,

Paul J. Wegner,

P. K. Whitman,

K. Widmann,

C. Widmayer,

R. D. Wood,

B. K. Young,

R. Zacharias,

A. B. Zylstra

Publication year - 2013

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.4807291

Subject(s) - national ignition facility , neutron , deuterium , physics , ignition system , nuclear physics , tritium , nuclear engineering , hotspot (geology) , inertial confinement fusion , plasma , geophysics , engineering , thermodynamics

First results from the analysis of neutron image data collected on implosions of cryogenically layered deuterium-tritium capsules during the 2011-2012 National Ignition Campaign are reported. The data span a variety of experimental designs aimed at increasing the stagnation pressure of the central hotspot and areal density of the surrounding fuel assembly. Images of neutrons produced by deuterium-tritium fusion reactions in the hotspot are presented, as well as images of neutrons that scatter in the surrounding dense fuel assembly. The image data are compared with 1D and 2D model predictions, and consistency checked using other diagnostic data. The results indicate that the size of the fusing hotspot is consistent with the model predictions, as well as other imaging data, while the overall size of the fuel assembly, inferred from the scattered neutron images, is systematically smaller than models' prediction. Preliminary studies indicate these differences are consistent with a significant fraction (20%-25%) of the initial deuterium-tritium fuel mass outside the compact fuel assembly, due either to low mode mass asymmetry or high mode 3D mix effects at the ablator-ice interface

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