Self-Guided Laser Wakefield Acceleration beyond 1 GeV Using Ionization-Induced Injection

被引：342

作者：

Clayton, C. E. ^{[1
]}

Ralph, J. E. ^{[2
]}

Albert, F. ^{[2
]}

Fonseca, R. A. ^{[3
]}

Glenzer, S. H. ^{[2
]}

Joshi, C. ^{[1
]}

Lu, W. ^{[1
]}

Marsh, K. A. ^{[1
]}

Martins, S. F. ^{[3
]}

Mori, W. B. ^{[1
]}

Pak, A. ^{[1
]}

Tsung, F. S. ^{[1
]}

Pollock, B. B. ^{[2
,4
]}

Ross, J. S. ^{[2
,4
]}

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

Froula, D. H. ^{[2
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[3] Inst Super Tecn, GoLP IPFN LA, Lisbon, Portugal

[4] Univ Calif San Diego, MAE Dept, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 10期

基金：

美国国家科学基金会;

关键词：

ELECTRON-BEAMS; PLASMA;

D O I：

10.1103/PhysRevLett.105.105003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The concepts of matched-beam, self-guided laser propagation and ionization-induced injection have been combined to accelerate electrons up to 1.45 GeV energy in a laser wakefield accelerator. From the spatial and spectral content of the laser light exiting the plasma, we infer that the 60 fs, 110 TW laser pulse is guided and excites a wake over the entire 1.3 cm length of the gas cell at densities below 1.5 x 10(18) cm(-3). High-energy electrons are observed only when small (3%) amounts of CO2 gas are added to the He gas. Computer simulations confirm that it is the K-shell electrons of oxygen that are ionized and injected into the wake and accelerated to beyond 1 GeV energy.

引用

页数：4

共 28 条

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