Saturable absorption of intense hard X-rays in iron

被引：88

作者：

Yoneda, Hitoki ^{[1
,2
]}

Inubushi, Yuichi ^{[2
,3
]}

Yabashi, Makina ^{[2
]}

Katayama, Tetsuo ^{[2
,3
]}

Ishikawa, Tetsuya ^{[2
]}

Ohashi, Haruhiko ^{[2
,3
]}

Yumoto, Hirokatsu ^{[3
]}

Yamauchi, Kazuto ^{[2
,4
]}

Mimura, Hidekazu ^{[2
,5
]}

Kitamura, Hikaru ^{[6
]}

机构：

[1] Univ Electrocommun, Inst Laser Sci, Chofu, Tokyo 1828585, Japan

[2] RIKEN, SPring Ctr 8, Sayo, Hyogo 6795148, Japan

[3] JASRI, Sayo, Hyogo 6795198, Japan

[4] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[5] Univ Tokyo, Dept Precis Engn, Bunkyo Ku, Tokyo 1138656, Japan

[6] Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan

来源：

NATURE COMMUNICATIONS | 2014年 / 5卷

关键词：

FREE-ELECTRON LASER; EXTREME-ULTRAVIOLET; RADIATION; OPERATION; COHERENT; PULSES;

D O I：

10.1038/ncomms6080

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In 1913, Maurice de Broglie discovered the presence of X-ray absorption bands of silver and bromine in photographic emulsion. Over the following century, X-ray absorption spectroscopy was established as a standard basis for element analysis, and further applied to advanced investigation of the structures and electronic states of complex materials. Here we show the first observation of an X-ray-induced change of absorption spectra of the iron K-edge for 7.1-keV ultra-brilliant X-ray free-electron laser pulses with an extreme intensity of 10(20) Wcm(-2). The highly excited state yields a shift of the absorption edge and an increase of transparency by a factor of 10 with an improvement of the phase front of the transmitted X-rays. This finding, the saturable absorption of hard X-rays, opens a promising path for future innovations of X-ray science by enabling novel attosecond active optics, such as lasing and dynamical spatiotemporal control of X-rays.

引用

页数：5

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