Relation between Inner Structural Dynamics and Ion Dynamics of Laser-Heated Nanoparticles
Relation between Inner Structural Dynamics and Ion Dynamics of Laser-Heated Nanoparticles
复制标题
激光加热纳米粒子的内部结构动力学与离子动力学之间的关系
DOI：
10.1103/physrevx.11.031046
复制
发表时间：
2021
影响因子：
12.5
通讯作者：
Nagaya Kiyonobu他
中科院分区：
文献类型：
--
作者：
Niozu Akinobu;Kameshima Takashi;Joti Yasumasa;Motomura Koji;Togashi Tadashi;Owada Shigeki;Katayama Tetsuo;Tono Kensuke;Yabashi Makina;Young Linda;Matsuda Kazuhiro;Bostedt Christoph;Ueda Kiyoshi;Nagaya Kiyonobu他
当一个纳米粒子被强激光脉冲照射时，它会变成一个纳米等离子体，这种转变伴随着许多有趣的非平衡动力学。到目前为止，大多数关于纳米等离子体的实验都使用离子测量，反映了纳米颗粒中的外部动力学。最近，随着X射线自由电子激光（XFEL）的出现，直接观察纳米颗粒内部的超快结构动力学也成为可能。在这里，我们报告的结构动力学和强烈的近红外激光照射产生的纳米等离子体喷射的离子的速度的组合测量，与控制的初始等离子体条件完成广泛变化的激光强度（to）。纳米等离子体的结构变化的时间分辨的X射线衍射使用XFEL检查，而喷射离子的动能测量的离子时间的战斗方法在相同的实验条件下。我们发现，在纳米等离子体中的晶体无序的时间尺度强烈依赖于激光强度和尺度与从纳米等离子体喷射的离子的平均速度的倒数。这些观察结果支持了最近提出的在宽强度范围内的纳米等离子体动力学的方案，其中纳米等离子体中的晶体无序是由稀疏波以与从表面到内部晶体核心的平均离子速度相当的速度传播引起的。我们证明，该方案也适用于在硬X射线制度的纳米等离子体动力学。我们的研究结果连接外部纳米等离子体动力学的飞秒时间尺度上的样品内部的结构的损失。
When a nanoparticle is irradiated by an intense laser pulse, it turns into a nanoplasma, a transition that is accompanied by many interesting nonequilibrium dynamics. So far, most experiments on nanoplasmas use ion measurements, reflecting the outside dynamics in the nanoparticle. Recently, the direct observation of the ultrafast structural dynamics on the inside of the nanoparticle also became possible with the advent of x-ray free electron lasers (XFELs). Here, we report on combined measurements of structural dynamics and speeds of ions ejected from nanoplasmas produced by intense near-infrared laser irradiations, with the control of the initial plasma conditions accomplished by widely varying the laser intensity (to). The structural change of nanoplasmas is examined by time-resolved x-ray diffraction using an XFEL, while the kinetic energies of ejected ions are measured by an ion time-of-fight method under the same experimental conditions. We find that the timescale of crystalline disordering in nanoplasmas strongly depends on the laser intensity and scales with the inverse of the average speed of ions ejected from the nanoplasma. The observations support a recently suggested scenario for nanoplasma dynamics in the wide intensity range, in which crystalline disorder in nanoplasmas is caused by a rarefaction wave propagating at a speed comparable with the average ion speed from the surface toward the inner crystalline core. We demonstrate that the scenario is also applicable to nanoplasma dynamics in the hard x-ray regime. Our results connect the outside nanoplasma dynamics to the loss of structure inside the sample on the femtosecond timescale.
登录
查看更多内容
强软 X 射线激光脉冲中团簇的复合增强表面膨胀。
影响因子：
8.6
作者：
D. Rupp;L. Flückiger;M. Adolph;T. Gorkhover;M. Krikunova;J. P. Müller;M. Müller;T. Oelze;Y. Ovcharenko;B. Röben;M. Sauppe;S. Schorb;D. Wolter;R. Mitzner;M. Wöstmann;S. Roling;M. Harmand;R. Treusch;M. Arbeiter;T. Fennel;C. Bostedt;T. Möller
通讯作者：
T. Möller
DOI：
10.1063/1.4890323
发表时间：
2014-07
期刊：
The Journal of chemical physics
影响因子：
--
作者：
D. Rupp;M. Adolph;L. Flückiger;T. Gorkhover;J. P. Müller;M. Müller;M. Sauppe;D. Wolter;S. Schorb;R. Treusch;C. Bostedt;T. Möller
通讯作者：
D. Rupp;M. Adolph;L. Flückiger;T. Gorkhover;J. P. Müller;M. Müller;M. Sauppe;D. Wolter;S. Schorb;R. Treusch;C. Bostedt;T. Möller
DOI：
10.1126/science.1229663
发表时间：
2013-01-11
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Redecke L;Nass K;DePonte DP;White TA;Rehders D;Barty A;Stellato F;Liang M;Barends TRM;Boutet S;Williams GJ;Messerschmidt M;Seibert MM;Aquila A;Arnlund D;Bajt S;Barth T;Bogan MJ;Caleman C;Chao TC;Doak RB;Fleckenstein H;Frank M;Fromme R;Galli L;Grotjohann I;Hunter MS;Johansson LC;Kassemeyer S;Katona G;Kirian RA;Koopmann R;Kupitz C;Lomb L;Martin AV;Mogk S;Neutze R;Shoeman RL;Steinbrener J;Timneanu N;Wang D;Weierstall U;Zatsepin NA;Spence JCH;Fromme P;Schlichting I;Duszenko M;Betzel C;Chapman HN
通讯作者：
Chapman HN
影响因子：
4.6
作者：
R. Schmalz
通讯作者：
R. Schmalz
影响因子：
44.1
作者：
Fennel, Th.;Meiwes-Broer, K-H.;Suraud, E.
通讯作者：
Suraud, E.