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FEL ¯útFgb[U[ð|võCEUV_FEL ðM[10 mJ Ì©Rdq[U[ð¿ÉÆËµC¿v[uõÆµÄp¢½BFEL ¯útFgb[U[Ìº¬776 mm Éu©ê½ CCD oíÅzOðvÆËã10 ps ÉÍCAu[VÉæé¯S~óÌ\¢ªµ½B¿ÆµÄp¢½eXgp^[Ìå«³â`óðÁ½zOp^[ª¾ÄÉÏªÅ«½B»ÝCÍCVOVbgvªÉKµ½zOf[^ª¾ÌÄ\¬ÈÇÚ×Èf[^ðÍðißÄ¢éÆ±ëÅçêéæ¤Ývµ½BVOVbgvªÍCr[éBÓ«{eÅñµ½àeÍCÈºÌûXðÍ¶ßÆ·é½­Ì¤ÒÆÌ¤¯¤ÅéihÌªjFªJîOiåjCÉ¡î¤Ii¤jCìèöFi¤jCªc^iºÉ§§åjC¼ä^ñiºÉ§§åjCî´q¼i¤jCi[i¤jCx~ii¤jCÎìNçi¤jBÜ½C{¤ðx¦Ä¸¢½ XFEL ¯i{ÌSÄÌûXÉ´Ó·éB{¤ÍCÈ¤ï¨æÑCXFEL pi¤ÛèÌ¬ðó¯½àÌÅéBQl¶£¼ìg¥CÎìNçFúËõ 19, 3 (2006).
Y. Nishino, Y. Takahashi, N. Imamoto, T. Ishikawa and K.
Maeshima: Phys. Rev. Lett. 102, 018101 (2009).
3) M. A. Pfeifer, G. J. Williams, I. A. Vartanyants, R. Harderand I. K. Robinson: Nature (London) 442, 63 (2006).
4) Y. Takahashi, N. Zettsu, Y. Nishino, R. Tsutsumi, E. Mat­
subara, T. Ishikawa and K. Yamauchi: Nano Letters 10, 19221)
2)Fig. 2Experimental setup for single­shot holography measurement
using EUV_FEL from the SCSS test accelerator, and an ex­
ample of experimental result. The instrument enables us totake phase­contrast subpicosecond snapshots of the sample.

úËõ Sept. 2010 Vol.23 No.5  323

5)(2010).
M. Guizar­Sicairos and J. R. Fienup: Opt. Express 15, 17592(2007).

6)

T. Kudo, T. Hirono, M. Nagasono and M. Yabashi: Rev. Sci.
Instrum. 80, 093301 (2009).
7) Y. Nishino et al.: submitted.

 ÒÐî ¼ìg¥kC¹åw dqÈw¤ Rq[g X üõw¤ªì ³ö
E­mail: yoshinori.nishinoes.hokudai.ac.jpêåFRq[g X üõwmªðn
1996Nåãåwåw@w¤È¨wê U m Ûö C ¹C  mi w ) B
1996N_2001NP xõÈw¤Z ^[C1998N_2000NhCcdqVNgiDESYjqõ¤õC2001N
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C¹B1984NkåwèC1991N¯å w u t C 1993 N  s å w  ³ ö C
1999Nkåw³öðoÄC2005Næè»EBc`l»w¤ d¤ úËõÈw¤Z^[ îÕ¤ ¨¿núËõpVXeJ­jbg jbg[_[E­mail: yotanakariken.jp
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»w¤Éd¤¤õðoÄC2009N 1 æè»EBToward ultrafast coherent imaging of materials
science phenomena with FEL
Yoshinori NISHINO1, Yoshihito TANAKA2, Eiichiro MATSUBARA3
1Research Institute for Electronic Science, Hokkaido University, Sapporo 001_0021, Japan
2RIKEN SPring­8 Center, Hyogo 679_5148, Japan

3Graduate School of Engineering, Kyoto University, Kyoto 606_8501, JapanAbstract Ultrafast coherent imaging utilizing FEL with ultra­short pulse and full spatial coherence is a tech­nique with the potential for new science. X­ray FEL ultimately enables the observation of atoms in motion infemtosecond time scale. In this article, we describe brief summary of our elementary experiments using EUV_FEL from the SCSS test accelerator aiming for ultrafast coherent imaging of materials science phenomena.

324  úËõ Sept. 2010 Vol.23 No.5