Reentrant cone angle dependence of the energetic electron slope temperature in high-intensity laser-plasma interactions | Zendy

M. Nakatsutsumi | Zendy; R. Kodama | Zendy; P. A. Norreys | Zendy; S. Awano | Zendy; Hirotaka Nakamura | Zendy; T. Norimatsu | Zendy; A. Ooya | Zendy; M. Tampo | Zendy; K. A. Tanaka | Zendy; Tsuyoshi Tanimoto | Zendy; T. Tsutsumi | Zendy; T. Yabuuchi | Zendy

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Reentrant cone angle dependence of the energetic electron slope temperature in high-intensity laser-plasma interactions

Author(s) -

M. Nakatsutsumi,

R. Kodama,

P. A. Norreys,

S. Awano,

Hirotaka Nakamura,

T. Norimatsu,

A. Ooya,

M. Tampo,

K. A. Tanaka,

Tsuyoshi Tanimoto,

T. Tsutsumi,

T. Yabuuchi

Publication year - 2007

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.2730490

Subject(s) - physics , plasma , electron temperature , laser , atomic physics , electron , ligand cone angle , intensity (physics) , absorption (acoustics) , optics , conical surface , materials science , composite material , quantum mechanics

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°. 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. © 2007 American Institute of Physics

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