Phase-contrast imaging using ultrafast x-rays in laser-shocked materials
Abstract
High-energy x-rays, > 10-keV, can be efficiently produced from ultrafast laser target interactions with many applications to dense target materials in Inertial Confinement Fusion (ICF) and High-Energy Density Physics (HEDP). These same x-rays can also be applied to measurements of low-density materials inside high-density hohlraum environments. In the experiments presented, high-energy x-ray images of laser-shocked polystyrene are produced through phase contrast imaging. The plastic targets are nominally transparent to traditional x-ray absorption but show detailed features in regions of high density gradients due to refractive effects often called phase contrast imaging. The 200-TW Trident laser is used both to produce the x-ray source and to shock the polystyrene target. X-rays at 17-keV produced from 2-ps, 100-J laser interactions with a 12-micron molybdenum wire are used to produce a small source size, required for optimizing refractive effects. Shocks are driven in the 1-mm thick polystyrene target using 2-ns, 250-J, 532-nm laser drive with phase plates. X-ray images of shocks compare well to 1-D hydro calculations, HELIOS-CR.
- Authors:
-
- Los Alamos National Laboratory
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1013598
- Report Number(s):
- LA-UR-10-03330; LA-UR-10-3330
Journal ID: ISSN 0034--6748; TRN: US1102537
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Conference
- Resource Relation:
- Journal Volume: 81; Journal Issue: 10; Conference: 19th Topical Conference on High - Temperature Plasma Diagnostics ; May 16, 2010 ; Wildwood, NJ
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABSORPTION; INERTIAL CONFINEMENT; LASER TARGETS; LASERS; MOLYBDENUM; PHYSICS; PLASMA DIAGNOSTICS; PLASTICS; PLATES; POLYSTYRENE; TARGETS; X-RAY SOURCES
Citation Formats
Workman, Jonathan B, Cobble, James A, Flippo, Kirk, Gautier, Donald C, Montgomery, David S, and Offermann, Dustin T. Phase-contrast imaging using ultrafast x-rays in laser-shocked materials. United States: N. p., 2010.
Web. doi:10.1063/1.3485109.
Workman, Jonathan B, Cobble, James A, Flippo, Kirk, Gautier, Donald C, Montgomery, David S, & Offermann, Dustin T. Phase-contrast imaging using ultrafast x-rays in laser-shocked materials. United States. https://doi.org/10.1063/1.3485109
Workman, Jonathan B, Cobble, James A, Flippo, Kirk, Gautier, Donald C, Montgomery, David S, and Offermann, Dustin T. 2010.
"Phase-contrast imaging using ultrafast x-rays in laser-shocked materials". United States. https://doi.org/10.1063/1.3485109. https://www.osti.gov/servlets/purl/1013598.
@article{osti_1013598,
title = {Phase-contrast imaging using ultrafast x-rays in laser-shocked materials},
author = {Workman, Jonathan B and Cobble, James A and Flippo, Kirk and Gautier, Donald C and Montgomery, David S and Offermann, Dustin T},
abstractNote = {High-energy x-rays, > 10-keV, can be efficiently produced from ultrafast laser target interactions with many applications to dense target materials in Inertial Confinement Fusion (ICF) and High-Energy Density Physics (HEDP). These same x-rays can also be applied to measurements of low-density materials inside high-density hohlraum environments. In the experiments presented, high-energy x-ray images of laser-shocked polystyrene are produced through phase contrast imaging. The plastic targets are nominally transparent to traditional x-ray absorption but show detailed features in regions of high density gradients due to refractive effects often called phase contrast imaging. The 200-TW Trident laser is used both to produce the x-ray source and to shock the polystyrene target. X-rays at 17-keV produced from 2-ps, 100-J laser interactions with a 12-micron molybdenum wire are used to produce a small source size, required for optimizing refractive effects. Shocks are driven in the 1-mm thick polystyrene target using 2-ns, 250-J, 532-nm laser drive with phase plates. X-ray images of shocks compare well to 1-D hydro calculations, HELIOS-CR.},
doi = {10.1063/1.3485109},
url = {https://www.osti.gov/biblio/1013598},
journal = {},
issn = {0034--6748},
number = 10,
volume = 81,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 2010},
month = {Fri Jan 01 00:00:00 EST 2010}
}