Atmospheric Aerosols

Nanoparticle growth in the CLOUD chamber

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Science  17 Jun 2016:
Vol. 352, Issue 6292, pp. 1422
DOI: 10.1126/science.352.6292.1422-a

A view of the interior of the CERN CLOUD chamber

PHOTO: CERN

Atmospheric ions and small acid-base clusters can participate in the growth of atmospheric nanoparticles. These species generally are not considered in models of aerosol formation from sulfuric acid vapor and so have not been included in estimates of new particle growth rates. Lehtipalo et al. measured growth rates of particles smaller than 3 nm in the CLOUD chamber at CERN and found that compounds that stabilize sulfuric acid clusters can control the magnitude of these effects, leading to higher growth rates and affecting the growth mechanism.

Nat. Comm. 10.1038/ncomms11594 (2016).

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