Generation of New Aerosol Particles and Their Evolution in Atmospheric Air: Results of Experiments in a Large Aerosol Chamber of RPA Typhoon

IF 0.9 Q4 OPTICS Atmospheric and Oceanic Optics Pub Date : 2024-03-23 DOI:10.1134/S1024856024010111

N. P. Romanov, A. V. Alekseeva, M. A. Vasilyeva, S. N. Dubtsov, V. N. Ivanov, O. I. Ozols, A. A. Paley, Yu. V. Pisanko, D. G. Sakhibgareev

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Abstract

The results of experiments in the Large Aerosol Chamber of RPA Typhoon revealed the appearance of new aerosol particles larger than 15 nm in an aerosol-free volume of atmospheric air isolated from the external environment in darkness 20 min after the air purification. The generation of new particles is associated with the possible presence of precursor gases in the atmospheric air, which, under the influence of cosmic rays penetrating into the chamber, turn into aerosols. The experimentally observed evolution (over several days) of the size spectrum of the resulting particles shows that the generation of new aerosol particles lasts no more than 20 hours. During the evolution, the particles become larger and reach more than 100 nm size. After repeated purification of the air inside the chamber with the removal of newly generated aerosols, no new particles were detected for 10 days.

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新气溶胶粒子的生成及其在大气中的演变：RPA 台风大型气溶胶室的实验结果

摘要--在 RPA Typhoon 的大型气溶胶室中进行的实验结果表明，在空气净化后 20 分钟的黑暗环境中，在与外部环境隔离的无气溶胶大气体积中出现了大于 15 纳米的新气溶胶粒子。新粒子的产生与大气空气中可能存在的前体气体有关，这些前体气体在穿入舱内的宇宙射线的影响下变成了气溶胶。通过实验观测到的所产生的粒子的大小光谱的演变（几天）表明，新气溶胶粒子的产生持续时间不超过 20 小时。在演变过程中，颗粒会变大，大小超过 100 纳米。在反复净化室内空气并清除新产生的气溶胶后，10 天内都没有检测到新的颗粒。

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来源期刊

Atmospheric and Oceanic Optics OPTICS-

CiteScore

2.40

自引率

42.90%

发文量

期刊介绍： Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.