Directional properties of hard x-ray sources generated by tightly focused ultrafast laser pulses

Journal Article · Mon Nov 17 00:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3023065· OSTI ID:21175760

Bixue, Hou; Mordovanakis, Aghapi; Easter, James; Krushelnick, Karl; Nees, John A ^[1]

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1. Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Blvd., Ann Arbor, Michigan 48109-2099 (United States)

Directional properties of ultrafast laser-based hard x-ray sources are experimentally studied using tightly focused approximately millijoule laser pulses incident on a bulk Mo target. Energy distributions of K{alpha} and total x rays, as well as source-size distributions are directionally resolved in vacuum and in flowing helium, respectively. Directional distributions of x-ray emission is more isotropic for p-polarized pump than for s-polarized. Based on source-size measurements, a simple two-location model, with expanded plasma and bulk material, is employed to represent the x-ray source profile.

• OSTI ID: 21175760
• Journal Information: Applied Physics Letters, Vol. 93, Issue 20; Other Information: DOI: 10.1063/1.3023065; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
07 ISOTOPES AND RADIATION SOURCES
ENERGY SPECTRA
HARD X RADIATION
HELIUM
LASERS
LIGHT TRANSMISSION
PHOTON EMISSION
PLASMA
PULSES
X-RAY SOURCES