Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Multiple light scattering in metallic ejecta produced under intense shockwave compression

Not Accessible

Your library or personal account may give you access

Abstract

A roughened metallic plate, subjected to intense shock wave compression, gives rise to an expanding ejecta particle cloud. Photonic Doppler velocimetry (PDV), a fiber-based heterodyne velocimeter, is often used to track ejecta velocities in dynamic compression experiments and on nanosecond time scales. Shortly after shock breakout at the metal–vacuum interface, a particular feature observed in many experiments in the velocity spectrograms is what appear to be slow-moving ejecta, below the free-surface velocity. Using Doppler Monte Carlo simulations incorporating the transport of polarization in the ejecta, we show that this feature is likely to be explained by the multiple scattering of light, rather than by possible collisions among particles, slowing down the ejecta. As the cloud expands in a vacuum, the contribution of multiple scattering decreases due to the limited field of view of the pigtailed collimator used to probe the ejecta, showing that the whole geometry of the system must be taken into account in the calculations to interpret and predict PDV measurements.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Bi-fiber quasi-axis probe for photonic Doppler velocimetry for shock physics experiments

Detian Wang, Jianhua Meng, Jianhua Tian, Liguo Zhu, Qixian Peng, Zeren Li, and Jianheng Zhao
Appl. Opt. 57(36) 10480-10484 (2018)

Ultraviolet digital holographic microscopy (DHM) of micron-scale particles from shocked Sn ejecta

Daniel R. Guildenbecher, Anthony McMaster, Andrew Corredor, Bob Malone, Jason Mance, Emma Rudziensky, Danny Sorenson, Jeremy Danielson, and Dana L. Duke
Opt. Express 31(9) 14911-14936 (2023)

Optical design of low-cost polarimetric back-scatter sondes

Murray Hamilton
Appl. Opt. 57(16) 4639-4648 (2018)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Equations (21)

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

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved