Compact X-ray laser amplifier in the "Water Window".
Additional Document Info
Spectroscopy and microscopy in the so-called "water-window" is a holy grail of modern molecular biology. A pulsed source of coherent X-rays within this spectral window, falling between 2.3nm and 4.4nm, provides a unique tool for time-resolved imaging of bio-systems in their naturally water-rich state. Within this spectral range, water is mostly transparent, while proteins are mostly opaque. This results in a high-contrast image on the sub-cellular level. Here we present, for the first time, generation of a very high gain of G 60/cm in He-like CV ions via transitions to the ground state at 4.03nm in a table-top device.