Transient X-ray fragmentation: probing a prototypical photoinduced ring opening.
Transient X-ray fragmentation: probing a prototypical photoinduced ring opening.
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DOI：
10.1103/physrevlett.108.253006
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发表时间：
2012-06
影响因子：
8.6
通讯作者：
V. Petrovic;M. Siano;James L. White;N. Berrah;C. Bostedt;J. Bozek;D. Broege;M. Chalfin;R. Coffee;J. Cryan;L. Fang;J. Farrell;L. Frasinski;J. Glownia;M. Gühr;M. Hoener;D. Holland;Jaehee Kim;J. Marangos;T. Martínez;B. McFarland;R. Minns;S. Miyabe;S. Schorb;R. Sension;L. Spector;R. Squibb;Hongli Tao;J. Underwood;P. Bucksbaum
中科院分区：
文献类型：
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作者：
V. Petrovic;M. Siano;James L. White;N. Berrah;C. Bostedt;J. Bozek;D. Broege;M. Chalfin;R. Coffee;J. Cryan;L. Fang;J. Farrell;L. Frasinski;J. Glownia;M. Gühr;M. Hoener;D. Holland;Jaehee Kim;J. Marangos;T. Martínez;B. McFarland;R. Minns;S. Miyabe;S. Schorb;R. Sension;L. Spector;R. Squibb;Hongli Tao;J. Underwood;P. Bucksbaum
我们报告的第一个研究紫外光诱导的光异构化探测通过芯电离的X射线激光。我们研究了X射线电离和碎裂的环己二烯-己三烯系统在850 eV的开环过程中。我们发现，离子碎片模式演变超过皮秒，反映了激发状态和分子几何形状的变化：平均动能每个离子碎片和H（+）-离子计数增加，环打开和分子伸长。我们讨论了光泵x射线探测实验所创造的分子电子物理学的新机会。
We report the first study of UV-induced photoisomerization probed via core ionization by an x-ray laser. We investigated x-ray ionization and fragmentation of the cyclohexadiene-hexatriene system at 850 eV during the ring opening. We find that the ion-fragmentation patterns evolve over a picosecond, reflecting a change in the state of excitation and the molecular geometry: the average kinetic energy per ion fragment and H(+)-ion count increase as the ring opens and the molecule elongates. We discuss new opportunities for molecular photophysics created by optical pump x-ray probe experiments.