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Aerosol Imaging with a Soft X-Ray Free Electron Laser
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2010 (English)In: Aerosol Science and Technology, ISSN 0278-6826, E-ISSN 1521-7388, Vol. 44, no 3, I-VI p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2010. Vol. 44, no 3, I-VI p.
National Category
Natural Sciences Engineering and Technology
URN: urn:nbn:se:uu:diva-136989DOI: 10.1080/02786820903485800ISI: 000276917200001OAI: oai:DiVA.org:uu-136989DiVA: diva2:377792
Available from: 2010-12-14 Created: 2010-12-14 Last updated: 2014-09-26Bibliographically approved

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Seibert, M. MarvinTimneanu, Nicusor
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