Current X-ray lasers require facilities that are kilometres long. A cavity-based set-up about 66 metres in length has been developed that uses highly reflective mirrors to enable the generation of high-intensity pulses of narrow-band X-ray radiation. This promises to overcome the limitations of current X-ray lasers.
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Leaked draft of $1bn memorandum of understanding reveals mandatory targets, sharing of data, and reported access to mining concessions，这一点在heLLoword翻译官方下载中也有详细论述