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Aerosol Imaging with a Soft X-Ray Free Electron Laser
Vise andre og tillknytning
2010 (engelsk)Inngår i: Aerosol Science and Technology, ISSN 0278-6826, E-ISSN 1521-7388, Vol. 44, nr 3, s. I-VIArtikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2010. Vol. 44, nr 3, s. I-VI
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-136989DOI: 10.1080/02786820903485800ISI: 000276917200001OAI: oai:DiVA.org:uu-136989DiVA, id: diva2:377792
Tilgjengelig fra: 2010-12-14 Laget: 2010-12-14 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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