An x-ray penumbral imager for measurements of electron-temperature profiles in inertial confinement fusion implosions at OMEGA

被引：10

作者：

Adrian, P. J. ^{[1
]}

Frenje, J. ^{[1
]}

Aguirre, B. ^{[2
]}

Bachmann, B. ^{[3
]}

Birkel, A. ^{[1
]}

Johnson, M. Gatu ^{[1
]}

Kabadi, N. V. ^{[1
]}

Lahmann, B. ^{[1
]}

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

Mannion, O. M. ^{[4
]}

Martin, W. ^{[2
]}

Mohamed, Z. L. ^{[4
]}

Regan, S. P. ^{[4
]}

Rinderknecht, H. G. ^{[4
]}

Scheiner, B. ^{[5
]}

Schmitt, M. J. ^{[5
]}

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

Shah, R. C. ^{[4
]}

Sio, H. ^{[3
]}

Sorce, C. ^{[4
]}

Sutcliffe, G. D. ^{[1
]}

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

机构：

[1] MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA

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

[4] Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA

[5] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2021年 / 92卷 / 04期

关键词：

IGNITION;

D O I：

10.1063/5.0041038

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Hot-spot shape and electron temperature (T-e) are key performance metrics used to assess the efficiency of converting shell kinetic energy into hot-spot thermal energy in inertial confinement fusion implosions. X-ray penumbral imaging offers a means to diagnose hot-spot shape and T-e, where the latter can be used as a surrogate measure of the ion temperature (T-i) in sufficiently equilibrated hot spots. We have implemented a new x-ray penumbral imager on OMEGA. We demonstrate minimal line-of-sight variations in the inferred T-e for a set of implosions. Furthermore, we demonstrate spatially resolved T-e measurements with an average uncertainty of 10% with 6 mu m spatial resolution.

引用

页数：5

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