Aerosol Imaging with a Soft X-Ray Free Electron Laser

被引：35

作者：

Bogan, Michael J. ^{[1
,2
]}

Boutet, Sebastien

Chapman, Henry N. ^{[3
,4
]}

Marchesini, Stefano ^{[5
]}

Barty, Anton ^{[2
]}

Benner, W. Henry ^{[2
]}

Rohner, Urs ^{[2
,6
]}

Frank, Matthias ^{[2
]}

Hau-Riege, Stefan P. ^{[2
]}

Bajt, Sasa ^{[3
]}

Woods, Bruce ^{[2
]}

Seibert, M. Marvin ^{[7
]}

Iwan, Bianca ^{[7
]}

Timneanu, Nicusor ^{[7
]}

Hajdu, Janos ^{[7
]}

Schulz, Joachim ^{[3
]}

机构：

[1] SLAC Natl Accelerator Lab, Stanford PULSE Inst Ultrafast Energy Sci, Menlo Pk, CA 94025 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA USA

[3] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany

[4] Univ Hamburg, Hamburg, Germany

[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[6] TOFWERK AG, Thun, Switzerland

[7] Uppsala Univ, Uppsala, Sweden

来源：

AEROSOL SCIENCE AND TECHNOLOGY | 2010年 / 44卷 / 03期

基金：

瑞典研究理事会;

关键词：

DIFFRACTION MICROSCOPY; SYNCHROTRON-RADIATION; PARTICLES; HOLOGRAPHY; MORPHOLOGY; DYNAMICS; GROWTH;

D O I：

10.1080/02786820903485800

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Lasers have long played a critical role in the advancement of aerosol science. A new regime of ultrafast laser technology has recently be realized, the world's first soft x-ray free electron laser. The Free electron LASer in Hamburg, FLASH, user facility produces a steady source of 10 femtosecond pulses of 7-32 nm x-rays with 1012 photons per pulse. The high brightness, short wavelength, and high repetition rate (>500 pulses per second) of this laser offers unique capabilities for aerosol characterization. Here we use FLASH to perform the highest resolution imaging of single PM2.5 aerosol particles in flight to date. We resolve to 35 nm the morphology of fibrous and aggregated spherical carbonaceous nanoparticles that existed for less than two milliseconds in vacuum. Our result opens the possibility for high spatial- and time-resolved single particle aerosol dynamics studies, filling a critical technological need in aerosol science.

引用

页码：I / VI

页数：6

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