Evaluation of an x-ray multilayer mirror for radiography at sub-1-keV photon energies

An x-ray multilayer mirror on a spherical substrate designed for near-normal incidence with a photon energy of ∼738 eV (F Heα) was procured and tested. This device is intended to be used for in-flight radiography of the shell in inertial confinement fusion experiments with cryogenic targets on the O...

Full description

Saved in:
Bibliographic Details
Published in:Review of scientific instruments 2024-07, Vol.95 (7)
Main Authors: Stoeckl, C., Begishev, I. A., Dauphin, N., Mileham, C., Ichimaru, S., Hatayama, M., Rosenberg, M. J.
Format: Article
Language:English
Subjects:
Inertial confinement fusion
Lasers
Multilayers
Optical imaging
OTHER INSTRUMENTATION
Photons
Plasma dynamics
Plasma flows
Radiography
Short pulses
Spatial resolution
Substrates
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An x-ray multilayer mirror on a spherical substrate designed for near-normal incidence with a photon energy of ∼738 eV (F Heα) was procured and tested. This device is intended to be used for in-flight radiography of the shell in inertial confinement fusion experiments with cryogenic targets on the OMEGA laser at the Laboratory for Laser Energetics. Experiments in self-emission on a small (∼10 J) laser system showed that the reflectivity of the mirror is high enough to record an image at laser energies as low as 0.1 J. A second set of tests in backlighting geometry on a larger (kJ)-scale, short-pulse laser yielded usable radiographs with laser energies as low as 40 J with a spatial resolution of ∼10 μm.
ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/5.0214012