Open AccessLASER PLASMA X-RAY EMISSION FROM 5? TO 200?
Author(s) -
Xiaofang Wang,
A. Pachtman,
Zhizhan Xu,
Shisheng Chen,
Yaoling Li,
Aidi Qian
Publication year - 1990
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.39.80
Subject(s) - plasma , laser , spectrograph , atomic physics , x ray , pinhole (optics) , emission spectrum , spectral line , pinhole camera , physics , materials science , optics , nuclear physics , astronomy
This paper presents the studies of the dependence of soft X-ray emission on atomic-number and laser intensities by using a new diagnostic tool, pinhole transmission grating spectrograph (PTGS). Plasma X-ray spectra of various elements from Z = 6(C) to Z = 79(Au) produced by a laser beam with an average power density 5×l014W/cm2 reveal the strong dependence of X-ray emission on atomic number Z. Comparative experiments of Al or Au plasma X-ray emis-sion under both spot and line focused laser illumination show that changes of the laser intensity have more remarkable influence on low Z plasma X-ray emission than that on high Z.