Initial characterization of new coherent soft X-ray branchline at the advanced light source

This study presents preliminary operation of a new coherent soft X-ray branchline at the advanced light source. This branch delivers spectrally and spatially coherent soft X-rays ranging from 200 eV to 1 keV photon energies (6.2 nm to 1.2 nm wavelength) using the third harmonic from an 8 cm period undulator. The increased energy range will allow interferometric techniques to be used in the extreme ultraviolet region to the soft X-ray region.