Published May 2011
| Version v1
Journal article
Scaling hot-electron generation to long-pulse, high-intensity laser-solid interactions
Creators
- Nilson, P. M.1, 2
- Solodov, A. A.1, 2
- Myatt, J. F.1
- Theobald, W.1
- Jaanimagi, P. A.1
- Gao, L.1
- Stoeckl, C.1
- Craxton, R. S.1
- Delettrez, J. A.1
- Yaakobi, B.1
- Zuegel, J. D.1
- Kruschwitz, B. E.1
- Dorrer, C.1
- Kelly, J. H.1
- Sangster, T. C.1
- Akli, K. U.3
- Patel, P. K.4
- Mackinnon, A. J.4
- Betti, R.5, 1, 2
- Meyerhofer, D. D.5, 1, 2
- 1. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
- 2. Fusion Science Center for Extreme States of Matter and Fast Ignition Physics, University of Rochester, Rochester, New York 14623 (United States)
- 3. General Atomics, San Diego, California 92186 (United States)
- 4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- 5. Departments of Mechanical Engineering and Physics, University of Rochester, Rochester, New York 14623 (United States)
Description
Experiments have been performed to determine the effect of laser-pulse duration and energy on hot-electron-generation efficiency at high intensity. Thin copper foil targets were irradiated with 1 to 2100 J, 1 to 10 ps pulses focused to intensities >1018 W/cm2. The target volume was varied from 75 x 75 x 3 μm3 to 600 x 600 x 50 μm3 to access a range of bulk thermal-electron temperatures up to several hundred electron volts. Comparison of K-photon spectroscopy measurements from these targets with electron transport and radiation-generation calculations indicates that the energy conversion efficiency into hot electrons is 20 ± 10%, independent of laser-pulse duration and energy.
Additional details
Identifiers
- DOI
- 10.1063/1.3560569;
Publishing Information
- Journal Title
- Physics of Plasmas
- Journal Volume
- 18
- Journal Issue
- 5
- Journal Page Range
- p. 056703-056703.6
- ISSN
- 1070-664X
- CODEN
- PHPAEN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43016911
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- CHARGED-PARTICLE TRANSPORT; COPPER; EFFICIENCY; ELECTRON TEMPERATURE; ELECTRONS; ENERGY CONVERSION; LASERS; SCALING; THIN FILMS
- Descriptors DEC
- CONVERSION; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; FILMS; LEPTONS; METALS; RADIATION TRANSPORT; TRANSITION ELEMENTS
Optional Information
- Notes
- (c) 2011 American Institute of Physics