Open AccessINDIRECT EVIDENCE OF FORWARD SCATTERING——PERIODIC STRUCTURE OF THE STIMULATED BRILLOUIN SCATTERING SPECTRA OBTAINED IN LASER.PLASMA INTERACTION EXPERIMENTS
Author(s) -
Zhizhan Xu,
Yonghong Tang,
Aidi Qian
Publication year - 1988
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.37.557
Subject(s) - brillouin scattering , scattering , spectral line , optics , plasma , wavelength , laser , brillouin zone , atomic physics , physics , forward scatter , light scattering , materials science , quantum mechanics , astronomy
Periodic structure of stimulated Brillouin backscattering spectra have been observed in ex-periments of intense Nd glass laser irradiating planar targets. Analysis and calculation indicate that this period structure results from the interaction between the ion-acoustic wave and the scattering light wave, the former is produced by the stimulated forward scatting and the latter by the stimulated backward scatting or scattering in other directions. From the wavelength shifts and period of the spectra, the temperature or drift velocity of the coronal plasma and the direction of forward scattering can be estimated.