Soft X-ray emission from molybdenum plasmas generated by dual laser pulses

We demonstrate efficient enhancement ofsoft X-ray(SXR) emission frommolybdenumplasmas produced using dual pulseirradiation, in which 10-ns and 150-ps pre-pulses were followed by a 150-ps main pulse. The number of photons was observed to be 5.3  × 1016 photons/sr, which corresponded to a conversion efficiency of 1.5%/sr inλ = 2.34–4.38 nm region at a pulse separation time of 1 ns with the 150-ps pre-pulse. The conversion efficiency became 1.3 times as large as that produced by a single pulse. The results indicate the advantage of dual pulseirradiation using sub-ns pre-and main pulses to produce the brightplasmas required for applications such as laboratory basedSXRmicroscopy.

Source: Applied Physics Letters - November 10, 2016 Category: Physics Authors: Ragava Lokasani, Goki Arai, Yoshiki Kondo, Hiroyuki Hara, Thanh-Hung Dinh, Takeo Ejima, Tadashi Hatano, Weihua Jiang, Tetsuya Makimura, Bowen Li, Padraig Dunne, Gerry O'Sullivan, Takeshi Higashiguchi and Jiri Limpouch Source Type: research