Abstract

Scattering of a continuous wave He–Ne laser beam in artificial fog is observed by five photometers at different angles. The measured intensity of the light scattered in the different directions is related to a Γ-type spectral distribution of the droplet sizes during the various evolution stages of the fog. The artificial fog is produced in a 40-m3 chamber, where the main physical parameters (vapor and nuclei concentration, temperature) can be controlled to reproduce the complete evolution process. The fog droplet size spectrum is determined at intervals of about 1 min. The results show that the size distribution shifts towards larger size droplets during condensation, and that the shift is reversed during fog dissipation.

© 1970 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Precise size distribution measurement of aerosol particles and fog droplets in the open atmosphere

Huige Di, Zhixiang Wang, and Dengxin Hua
Opt. Express 27(12) A890-A908 (2019)

Infrared Emission by Fine Water Aerosols and Fogs

H. R. Carlon
Appl. Opt. 9(9) 2000-2006 (1970)

Fog droplet distribution functions for lidar

J. V. Mallow
Appl. Opt. 21(8) 1454-1456 (1982)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription