skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High Brightness, Laser-Driven X-ray Source for Nanoscale Metrology and Femtosecond Dynamics

Abstract

This project developed and demonstrated a new, bright, ultrafast x-ray source based upon laser-driven K-alpha generation, which can produce an x-ray flux 10 to 100 times greater than current microfocus x-ray tubes. The short-pulse (sub-picosecond) duration of this x-ray source also makes it ideal for observing time-resolved dynamics of atomic motion in solids and thin films.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
902319
Report Number(s):
UCRL-TR-228409
TRN: US200717%%539
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; BRIGHTNESS; THIN FILMS; X-RAY SOURCES; X-RAY TUBES

Citation Formats

Siders, C W, Crane, J K, Semenov, V, Betts, S, Kozioziemski, B, Wharton, K, Wilks, S, Barbee, T, Stuart, B, Kim, D E, An, J, and Barty, C. High Brightness, Laser-Driven X-ray Source for Nanoscale Metrology and Femtosecond Dynamics. United States: N. p., 2007. Web. doi:10.2172/902319.
Siders, C W, Crane, J K, Semenov, V, Betts, S, Kozioziemski, B, Wharton, K, Wilks, S, Barbee, T, Stuart, B, Kim, D E, An, J, & Barty, C. High Brightness, Laser-Driven X-ray Source for Nanoscale Metrology and Femtosecond Dynamics. United States. doi:10.2172/902319.
Siders, C W, Crane, J K, Semenov, V, Betts, S, Kozioziemski, B, Wharton, K, Wilks, S, Barbee, T, Stuart, B, Kim, D E, An, J, and Barty, C. Mon . "High Brightness, Laser-Driven X-ray Source for Nanoscale Metrology and Femtosecond Dynamics". United States. doi:10.2172/902319. https://www.osti.gov/servlets/purl/902319.
@article{osti_902319,
title = {High Brightness, Laser-Driven X-ray Source for Nanoscale Metrology and Femtosecond Dynamics},
author = {Siders, C W and Crane, J K and Semenov, V and Betts, S and Kozioziemski, B and Wharton, K and Wilks, S and Barbee, T and Stuart, B and Kim, D E and An, J and Barty, C},
abstractNote = {This project developed and demonstrated a new, bright, ultrafast x-ray source based upon laser-driven K-alpha generation, which can produce an x-ray flux 10 to 100 times greater than current microfocus x-ray tubes. The short-pulse (sub-picosecond) duration of this x-ray source also makes it ideal for observing time-resolved dynamics of atomic motion in solids and thin films.},
doi = {10.2172/902319},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Feb 26 00:00:00 EST 2007},
month = {Mon Feb 26 00:00:00 EST 2007}
}

Technical Report:

Save / Share:
  • The development of high average power pulsed solid-state lasers and the application of these lasers to the generation of laser-produced plasmas for soft-x-ray generation is described. A 44-W average power moving slab neodymium glass laser was demonstrated. In a separate experiment, injection seeding of this laser to produce 500-MW ll-ps pulses was attained. Soft-x-ray generation has been investigated with the moving slab laser, a fixed slab laser, and commercial rod-geometry lasers. The techniques that were demonstrated show the feasibility of scaling the operation of slab lasers to the kilowatt level. The rapid development of diode-laser pumping techniques suggests the potentialmore » for remarkable efficient, compact, and economical laser systems for short-wavelength lithography and microscopy applications.« less
  • Under the auspices of the Science of Extreme Environments LDRD program, a <2 year theoretical- and computational-physics study was performed (LDRD Project 130805) by Guy R Bennett (formally in Center-01600) and Adam B. Sefkow (Center-01600): To investigate novel target designs by which a short-pulse, PW-class beam could create a brighter K{alpha} x-ray source than by simple, direct-laser-irradiation of a flat foil; Direct-Foil-Irradiation (DFI). The computational studies - which are still ongoing at this writing - were performed primarily on the RedStorm supercomputer at Sandia National Laboratories Albuquerque site. The motivation for a higher efficiency K{alpha} emitter was very clear: asmore » the backlighter flux for any x-ray imaging technique on the Z accelerator increases, the signal-to-noise and signal-to-background ratios improve. This ultimately allows the imaging system to reach its full quantitative potential as a diagnostic. Depending on the particular application/experiment this would imply, for example, that the system would have reached its full design spatial resolution and thus the capability to see features that might otherwise be indiscernible with a traditional DFI-like x-ray source. This LDRD began FY09 and ended FY10.« less
  • Bright Ar quasimonochromatic K-shell x ray with very little background has been generated using an Ar clustering gas jet target irradiated with a 30 fs ultrahigh-contrast laser, with a measured flux of 2.2x10{sup 11} photons/J into 4{pi}. This intense x-ray source critically depends on the laser contrast and intensity. The optimization of source output with interaction length is addressed. Simulations point to a nonlinear resonant mechanism of electron heating during the early stage of laser interaction, resulting in enhanced x-ray emission. The x-ray pulse duration is expected to be only 10 fs, opening the possibility for single-shot ultrafast keV x-raymore » imaging applications.« less
  • No abstract prepared.