Technical note: The enhancement limit of coagulation scavenging of small charged particles
Technical note: The enhancement limit of coagulation scavenging of small charged particles
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DOI：
10.5194/acp-21-3827-2021
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发表时间：
2021-03
影响因子：
6.3
通讯作者：
Naser G. A. Mahfouz;N. Donahue
中科院分区：
文献类型：
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作者：
Naser G. A. Mahfouz;N. Donahue
**摘要**：我们表明，带电粒子凝聚清除增强的极限为2，即与中性粒子的情况相比翻倍。在其他条件相同的情况下，由于粒子存活概率随凝聚汇的增加呈指数下降，凝聚汇翻倍会导致存活概率大幅下降——存活概率变为原来的平方，即\(p^{2}\)，其中\(p\leq1\)为中性粒子的存活概率。因此，在研究大气中离子诱导的新粒子形成以及离子增强的新粒子生长时，必须考虑这种平衡效应。
Abstract. We show that the limit of the enhancement of coagulation scavenging of charged particles is 2, that is, doubled compared to the neutral case. Because the particle survival probability decreases exponentially as the coagulation sink increases, everything else being equal, the doubling of the coagulation sink can amount to a dramatic drop in survival probability – squaring the survival probability, p2 , where p≤1 is the survival probability in the neutral case. Thus, it is imperative to consider this counterbalancing effect when studying ion-induced new-particle formation and ion-enhanced new-particle growth in the atmosphere.