نتایج جستجو برای: ray laser
تعداد نتایج: 478312 فیلتر نتایج به سال:
Ultrafast betatron x-ray emission from electron oscillations in laser wakefield acceleration (LWFA) has been widely investigated as a promising source. Betatron x-rays are usually produced via self-injected electron beams, which are not controllable and are not optimized for x-ray yields. Here, we present a new method for bright hard x-ray emission via ionization injection from the K-shell elec...
We describe a soft-x-ray laser interferometry technique that allows two-dimensional diagnosis of plasma electron density with picosecond time resolution. It consists of the combination of a robust high-throughput amplitude-division interferometer and a 14.7-nm transient-inversion soft-x-ray laser that produces approximately 5-ps pulses. Because of its picosecond resolution and short-wavelength ...
The capillary discharge soft X-ray laser is a promising scheme with its long capillary plasma column that is efficiently generated by the fast current pulse of about several 10s ns. In this study, the possibility of a recombination soft X-ray laser will be discussed in anticipation of realizing a 13.4 nm H-like N EUV laser. Evolution of EUV emission from nitrogen plasma with number density of 1...
We observed 8 10 7 . 1 × X-ray photons/pulse generated through relativistic Thomson scattering between the 14GW CO2 laser and 60MeV electron beam at Brookhaven National Laboratory. Non-linear Thomson scattering can be observed by upgrading peak power density of the CO2 laser. Introduction Development of high-intensity, short-pulse, and compact X-ray sources is demanded for various fields of sci...
Generation of attosecond x-ray pulses is attracting much attention within the x-ray free-electron laser (FEL) user community. Several schemes have been proposed based on manipulations of electron bunches with extremely short laser pulses. In this paper, we extend the attosecond twocolor ESASE scheme proposed by Zholents et al. to the long optical cycle regime using a detuned second laser and a ...
We present what is to our knowledge the first longitudinal coherence measurement of a transient inversion collisional x-ray laser. We investigated the picosecond output of a Ni-like Pd x-ray laser at 14.68 nm generated by the COMET laser facility at the Lawrence Livermore National Laboratory. Interference fringes were generated with a Michelson interferometer setup in which a thin multilayer me...
X-ray magnetic circular dichroism spectroscopy using an X-ray free electron laser is demonstrated with spectra over the Fe L(3,2)-edges. The high brightness of the X-ray free electron laser combined with high accuracy detection of incident and transmitted X-rays enables ultrafast X-ray magnetic circular dichroism studies of unprecedented sensitivity. This new capability is applied to a study of...
Development of efficient soft x-ray laser plasma amplifiers adapted to seeded operation, requires a better control over amplifier transverse spatial extent, brilliance control and gain lifetime. Here it is shown that pumping the plasma amplifier with one long and two short pump pulses (1L2S) provides advantages in terms of control for the specified parameters in the case of Ni-like Ag x-ray las...
The development of X-ray lasers is marked by the progression toward shorter wavelengths using less drive energy. A recent X-ray laser experiment at the Rutherford Appleton Laboratory demonstrated saturated X-ray laser operation in the Ne-like Ti and Ge X-ray laser schemes at 32.6 and 19.6 nm respectively, with a drive energy of only a few joules, a significant step in the progression to table t...
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