Monoenergetic-proton-radiography measurements of implosion dynamics in direct-drive inertial-confinement fusion

被引：104

作者：

Li, C. K. ^{[1
]}

Seguin, F. H. ^{[1
]}

Rygg, J. R. ^{[1
]}

Frenje, J. A. ^{[1
]}

Manuel, M. ^{[1
]}

Petrasso, R. D. ^{[1
]}

Betti, R. ^{[2
]}

Delettrez, J. ^{[2
]}

Knauer, J. P. ^{[2
]}

Marshall, F. ^{[2
]}

Meyerhofer, D. D. ^{[2
,5
]}

Shvarts, D. ^{[2
,6
,7
]}

Smalyuk, V. A. ^{[2
]}

Stoeckl, C. ^{[2
]}

Landen, O. L. ^{[3
]}

Town, R. P. J. ^{[3
]}

Back, C. A. ^{[4
]}

Kilkenny, J. D. ^{[4
]}

机构：

[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[4] Gen Atom Co, San Diego, CA 92186 USA

[5] Univ Rochester, Dept Mech Engn Phys & Astron, Rochester, NY 14623 USA

[6] Ben Gurion Univ Negev, IL-84015 Beer Sheva, Israel

[7] NRCN, IL-84015 Beer Sheva, Israel

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.100.225001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Time-gated, monoenergetic radiography with 15-MeV protons provides unique measurements of implosion dynamics in direct-drive inertial-confinement fusion. Images obtained during acceleration, coasting, deceleration, and stagnation display a comprehensive picture of spherical implosions. Critical information inferred from such images, hitherto unavailable, characterizes the spatial structure and temporal evolution of self-generated fields and plasma areal density. Results include the first observation of a radial electric field inside the imploding capsule. It is initially directed inward (at similar to 10(9) V/m), eventually reverses direction (similar to 10(8) V/m), and is the probable consequence of the evolution of the electron pressure gradient.

引用

页数：4

共 20 条

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