Abstract
We demonstrate the first observation of X-ray fluorescence resulting from inner-shell photoionization by a subpicosecond laser-produced plasma X-ray source. 8 keV electrons produced by a 100 fs laser at 3*1016 w cm-2 intensity create K-shell vacancies in a Ti layer. This generates a 4.51 keV K alpha X-ray pulse which is used to photoionize a Ca sample. Fluorescence of Ca at 3.69 keV (K alpha) and 4.01 keV (K beta) is observed as a result of Ti K alpha photoionization.
| Original language | English |
|---|---|
| Pages (from-to) | L697, L701 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 27 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 14 Nov 1994 |
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