On the sideband structure of free electron laser emission spectra

1996 ◽  
Vol 3 (1) ◽  
pp. 402-406
Author(s):  
G. Spindler ◽  
G. Renz
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Laser Emission ◽  
Emission Spectra

scholarly journals Photo-ionized neon plasmas induced by radiation pulses of a laser-plasma EUV source and a free electron laser FLASH

2013 ◽  
Vol 31 (2) ◽  
pp. 195-201 ◽  
Author(s):  
A. Bartnik ◽  
R. Fedosejevs ◽  
P. Wachulak ◽  
H. Fiedorowicz ◽  
C. Serbanescu ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Extreme Ultraviolet ◽  
Spectral Characteristics ◽  
Emission Spectra ◽  
Spectral Lines ◽  
Plasma Radiation ◽  
Beam Radiation ◽  
Radiation Beam ◽  
Ionized Plasmas

AbstractIn this work, a laser-produced plasma extreme ultraviolet source and a free electron laser were used to create Ne photo-ionized plasmas. In both cases, a radiation beam was focused onto a gas stream injected into a vacuum chamber synchronously with the radiation pulse. Extreme ultraviolet radiation from the plasma spanned a wide spectral range with pronounced maximum centered at λ = 11 ± 1 nm while the free electron laser pulses were emitted at a wavelength of 32 nm. The power density of the focused plasma radiation was approximately 2 × 107 W/cm2 and was seven orders of magnitude lower compared with the focused free electron laser beam. Radiation fluences in both experimental conditions were comparable. Despite quite different spectral characteristics and extremely different power densities, emission spectra of both photo-ionized plasmas consist of the same spectral lines within a wavelength range of 20 to 50 nm, however, with different relative intensities of the corresponding lines. The dominating spectral lines originated from singly charged ions (Ne II); however, Ne III lines were also detected. Additionally, computer simulations of the emission spectra, obtained for photo-ionized plasmas, driven by the plasma extreme ultraviolet source, were performed. The corresponding measured and calculated spectra are presented. An electron temperature and ionic composition were estimated. Differences between the experimental spectra, obtained for both irradiation conditions, were analyzed. The differences were attributed mainly to different energies of driving photons.

scholarly journals X-ray Spectroscopic Studies of a Solid-Density Germanium Plasma Created by a Free Electron Laser

2020 ◽  
Vol 10 (22) ◽  
pp. 8153
Author(s):  
Gabriel Pérez-Callejo ◽  
Sam M. Vinko ◽  
Shenyuan Ren ◽  
Ryan Royle ◽  
Oliver Humphries ◽  
...  
Keyword(s):  
Photon Energy ◽  
Free Electron ◽  
Free Electron Laser ◽  
Emission Spectra ◽  
Spectroscopic Studies ◽  
Coupled Systems ◽  
Heating Process ◽  
Strongly Coupled ◽  
X Ray ◽  
Solid Density

The generation of solid-density plasmas in a controlled manner using an X-ray free electron laser (XFEL) has opened up the possibility of diagnosing the atomic properties of hot, strongly coupled systems in novel ways. Previous work has concentrated on K-shell emission spectroscopy of low Z (<= 14) elements. Here, we extend these studies to the mid-Z(=32) element Germanium, where the XFEL creates copious L-shell holes, and the plasma conditions are interrogated by recording of the associated L-shell X-ray emission spectra. Given the desirability of generating as uniform a plasma as possible, we present here a study of the effects of the FEL photon energy on the temperatures and electron densities created, and their uniformity in the FEL beam propagation direction. We show that good uniformity can be achieved by tuning the photon energy of the XFEL such that it does not overlap significantly with L-shell to M-shell bound-bound transitions, and lies below the L-edges of the ions formed during the heating process. Reasonable agreement between experiment and simulations is found for the emitted X-ray spectra, demonstrating that for these higher Z elements, the selection of appropriate XFEL parameters is important for achieving uniformity in the plasma conditions.

Free-electron laser emission architecture impact on EUV lithography

2017 ◽  
Author(s):  
Erik R. Hosler ◽  
Obert R. Wood ◽  
William A. Barletta
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Laser Emission ◽  
Euv Lithography

FAR INFRARED FREE ELECTRON LASER

1983 ◽  
Vol 44 (C1) ◽  
pp. C1-385-C1-385
Author(s):  
E. D. Shaw ◽  
R. M. Emanuelson ◽  
G. A. Herbster
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Far Infrared

FULLY QUANTIZED MANY PARTICLE THEORY OF A FREE-ELECTRON LASER

1983 ◽  
Vol 44 (C1) ◽  
pp. C1-367-C1-367
Author(s):  
W. Becker ◽  
J. K. McIver
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Particle Theory

Effect of Chirality by the Free Electron Laser Irradiation

2010 ◽  
Vol 130 (2) ◽  
pp. 209-212 ◽  
Author(s):  
Daisuke Ishizuka ◽  
Keijiro Sakai ◽  
Nobuyuki Iwata ◽  
Hirofumi Yajima ◽  
Hiroshi Yamamoto
Keyword(s):  
Laser Irradiation ◽  
Free Electron ◽  
Free Electron Laser

X-Ray Free Electron Laser Facility for Next Generation of Scientific Exploration and Discovery

2011 ◽  
Vol 131 (2) ◽  
pp. 68-71
Author(s):  
Etsuo FUJIWARA ◽  
Eiichi ANAYAMA ◽  
Yuichiro KATSUTA ◽  
Toshiki IZUTANI ◽  
Daichi OKUHARA ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Next Generation ◽  
X Ray ◽  
Scientific Exploration ◽  
Laser Facility

X-ray Free Electron Laser SACLA

2014 ◽  
Vol 134 (12) ◽  
pp. 836-839
Author(s):  
Junichi INOUE ◽  
Yuji TANAKA ◽  
Yuki MATSUMOTO ◽  
Kensuke KANDA
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document