Aerosol nucleation induced by a high energy particle beam
Aerosol nucleation induced by a high energy particle beam
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DOI:
10.1029/2011gl047036
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发表时间:
2011-05-12
影响因子:
5.2
通讯作者:
Svensmark, Henrik
中科院分区:
文献类型:
--
作者:
Enghoff, Martin B.;Pedersen, Jens Olaf Pepke;Svensmark, Henrik
We have studied sulfuric acid aerosol nucleation in an atmospheric pressure reaction chamber using a 580 MeV electron beam to ionize the volume of the reaction chamber. We find a clear contribution from ion-induced nucleation and consider this to be the first unambiguous observation of the ion-effect on aerosol nucleation using a particle beam under conditions that resemble the Earth's atmosphere. By comparison with ionization using a gamma source we further show that the nature of the ionizing particles is not important for the ion-induced component of the nucleation. This implies that inexpensive ionization sources - as opposed to expensive accelerator beams - can be used for investigations of ion-induced nucleation. Citation: Enghoff, M. B., J. O. P. Pedersen, U. I. Uggerhoj, S. M. Paling, and H. Svensmark (2011), Aerosol nucleation induced by a high energy particle beam, Geophys. Res. Lett., 38, L09805, doi:10.1029/2011GL047036.