NEON-LIKE X-RAY LASERS OF ZIRCONIUM, NIOBIUM AND BROMINE

We demonstrate three new x-ray lasers in neon-like zirconium, niobium and bromine which lase on 3p --> 3s transitions. By observing the wave lengths and relative intensity of the lasing lines we hope to shed som e light on the anomalous lasing in neon-like yttrium, where one laser line dominates the spectrum. In this work we report the wavelengths of five new lasing lines in bromine and six lasing lines each in zirconi um and niobium.