Published May 2007
| Version v1
Journal article
Reentrant cone angle dependence of the energetic electron slope temperature in high-intensity laser-plasma interactions
Creators
- 1. Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)
- 2. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)
- 3. Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom)
Description
Energy spectra of fast electrons, generated when high-intensity laser pulses irradiated hollow conical targets, have been measured experimentally. It is shown here that the slope temperature of the fast electrons is strongly dependent on the opening angle of the cone, and has a maximum value at 25 deg. The data confirms optical guiding of the laser pulse, by comparison of the measured electron temperature with ray-tracing calculations that include absorption in plasmas. The enhanced energy flow and intensity induced by optical guiding of the laser pulse inside the cone as a function of the opening angle as well as the f-number of the focusing optics is discussed
Additional details
Identifiers
- DOI
- 10.1063/1.2730490;
Publishing Information
- Journal Title
- Physics of Plasmas
- Journal Volume
- 14
- Journal Issue
- 5
- Journal Page Range
- p. 050701-050701.4
- ISSN
- 1070-664X
- CODEN
- PHPAEN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39004441
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- ABSORPTION; ELECTRON TEMPERATURE; ENERGY SPECTRA; ION TEMPERATURE; LASERS; PLASMA; PLASMA DIAGNOSTICS; PULSES; TAIL ELECTRONS
- Descriptors DEC
- ELECTRONS; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; SORPTION; SPECTRA
Optional Information
- Notes
- (c) 2007 American Institute of Physics