Proton radiography of inertial fusion implosions

被引：178

作者：

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

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

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

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

Manuel, M. J. -E. ^{[1
]}

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

Betti, R. ^{[2
]}

Delettrez, J. A. ^{[2
]}

Gotchev, O. V. ^{[2
]}

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

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

Marshall, F. J. ^{[2
]}

Stoeckl, C. ^{[2
]}

Theobald, W. ^{[2
]}

机构：

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

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

来源：

SCIENCE | 2008年 / 319卷 / 5867期

关键词：

D O I：

10.1126/science.1152640

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A distinctive way of quantitatively imaging inertial fusion implosions has resulted in the characterization of two different types of electromagnetic configurations and in the measurement of the temporal evolution of capsule size and areal density. Radiography with a pulsed, monoenergetic, isotropic proton source reveals field structures through deflection of proton trajectories, and areal densities are quantified through the energy lost by protons while traversing the plasma. The two field structures consist of (i) many radial filaments with complex striations and bifurcations, permeating the entire field of view, of magnetic field magnitude 60 tesla and ( ii) a coherent, centrally directed electric field of order 10(9) volts per meter, seen in proximity to the capsule surface. Although the mechanism for generating these fields is unclear, their effect on implosion dynamics is potentially consequential.

引用

页码：1223 / 1225

页数：3

共 21 条

[1]

Atzeni Stefano, 2004, The Physics of Inertial Fusion, V125

[2] EFFECT OF LASER ILLUMINATION NONUNIFORMITY ON THE ANALYSIS OF TIME-RESOLVED X-RAY MEASUREMENTS IN UV-SPHERICAL TRANSPORT EXPERIMENTS [J].

DELETTREZ, J ;

EPSTEIN, R ;

RICHARDSON, MC ;

JAANIMAGI, PA ;

HENKE, BL .

PHYSICAL REVIEW A, 1987, 36 (08) :3926-3934

[3]

Drake RP, 2006, SHOCK WAVE HIGH PRES, P1, DOI 10.1007/3-540-29315-9

[4] MAGNETIC-FIELD GENERATION IN LASER FUSION AND HOT-ELECTRON TRANSPORT [J].

HAINES, MG .

CANADIAN JOURNAL OF PHYSICS, 1986, 64 (08) :912-919

[5] THERMAL-INSTABILITY AND MAGNETIC-FIELD GENERATED BY LARGE HEAT-FLOW IN A PLASMA, ESPECIALLY UNDER LASER-FUSION CONDITIONS [J].

HAINES, MG .

PHYSICAL REVIEW LETTERS, 1981, 47 (13) :917-920

[6] Nuclear fusion - Fast heating scalable to laser fusion ignition [J].

Kodama, R ;

Shiraga, H ;

Shigemori, K ;

Toyama, Y ;

Fujioka, S ;

Azechi, H ;

Fujita, H ;

Habara, H ;

Hall, T ;

Izawa, Y ;

Jitsuno, T ;

Kitagawa, Y ;

Krushelnick, KM ;

Lancaster, KL ;

Mima, K ;

Nagai, K ;

Nakai, M ;

Nishimura, H ;

Norimatsu, T ;

Norreys, PA ;

Sakabe, S ;

Tanaka, KA ;

Youssef, A ;

Zepf, M .

NATURE, 2002, 418 (6901) :933-934

[7]

Kruer W. L., 2003, PHYS LASER PLASMA IN

[8] Observation of megagauss-field topology changes due to magnetic reconnection in laser-produced plasmas [J].

Li, C. K. ;

Seguin, F. H. ;

Frenje, J. A. ;

Rygg, J. R. ;

Petrasso, R. D. ;

Town, R. P. J. ;

Landen, O. L. ;

Knauer, J. P. ;

Smalyuk, V. A. .

PHYSICAL REVIEW LETTERS, 2007, 99 (05)

[9] Monoenergetic proton backlighter for measuring E and B fields and for radiographing implosions and high-energy density plasmas (invited). [J].

Li, C. K. ;

Seguin, F. H. ;

Frenje, J. A. ;

Rygg, J. R. ;

Petrasso, R. D. ;

Town, R. P. J. ;

Amendt, P. A. ;

Hatchett, S. P. ;

Landen, O. L. ;

Mackinnon, A. J. ;

Patel, P. K. ;

Smalyuk, V. A. ;

Knauer, J. P. ;

Sangster, T. C. ;

Stoeckl, C. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2006, 77 (10)

[10] Measuring E and B fields in laser-produced plasmas with monoenergetic proton radiography [J].

Li, C. K. ;

Seguin, F. H. ;

Frenje, J. A. ;

Rygg, J. R. ;

Petrasso, R. D. ;

Town, R. P. J. ;

Amendt, P. A. ;

Hatchett, S. P. ;

Landen, O. L. ;

Mackinnon, A. J. ;

Patel, P. K. ;

Smalyuk, V. A. ;

Sangster, T. C. ;

Knauer, J. P. .

PHYSICAL REVIEW LETTERS, 2006, 97 (13)

← 1 2 3 →