Abstract

A Monte Carlo model of the behavior of photons in a reflective tube absorption meter has been developed and used to investigate how well such a meter can measure the absorption coefficient in waters of different optical types. The apparent, i.e., measured, absorption coefficient (am) is always greater than the true absorption coefficient (a). The ratio am/a increases linearly with the ratio of scattering to absorption (b/a) at a rate that depends on the scattering phase function of the water. The excess attenuation is mainly due to the failure of forward-scattered photons to undergo reflection at the cylinder wall. To achieve the highest accuracy possible with the meter, one must maximize the reflectivity and detector acceptance angle. Performance is also improved by increasing the cylinder diameter.

© 1992 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Design and analysis of a flow-through integrating cavity absorption meter

Deric J. Gray, George W. Kattawar, and Edward S. Fry
Appl. Opt. 45(35) 8990-8998 (2006)

Uncertainties associated to measurements of inherent optical properties in natural waters

Edouard Leymarie, David Doxaran, and Marcel Babin
Appl. Opt. 49(28) 5415-5436 (2010)

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

Equations (2)

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