ausblenden:
Schlagwörter:
-
Zusammenfassung:
We present a table-top soft-x-ray spectrometer for the wavelength range
λ
=
1–5 nm based on
a stable laser-driven x-ray source, making use of a gas-puff target. With this setup, optical light-
pump/soft-x-ray probe near-edge x-ray absorption fine structure (NEXAFS) experiments with a
temporal resolution of about 230 ps are feasible. Pump-probe NEXAFS measurements were car-
ried out in the “water-window” region (2.28 nm–4.36 nm) on the manganite Pr
0.7
Ca
0.3
MnO
3
,
investigating diminutive changes of the oxygen K edge that derive from an optically induced phase
transition. The results show the practicability of the table-top soft-x-ray spectrometer on demand-
ing investigations so far exclusively conducted at synchrotron radiation sources.
