Free electron mediated effects of femtosecond pulse series in the (irradiance/irradiation dose) parameter space (Conference Presentation)

The nonlinear ionization process was discussed in detail induced by femtosecond pulse in Lithum Niobate (LN) crystal. The MPI provides “seed” electrons for avalanche ionization process, and avalanche becomes significant when the density of electron created by MPI over 1020 cm-3. Recombination process leads to an obvious drop of electron density and then a dynamic equilibrium is achieved between the generation of electron and the recombination process, and the density is dependent on the incoming field.

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Compact undulator line for a high-brilliance soft-X-ray free-electron laser at MAX IV

Journal of Synchrotron Radiation ◽

10.1107/s160057751900290x ◽

2019 ◽

Vol 26 (3) ◽

pp. 891-898

Author(s):

Alan Mak ◽

Peter Salén ◽

Vitaliy Goryashko

Keyword(s):

Parameter Space ◽

Free Electron ◽

Free Electron Laser ◽

Optimal Parameter ◽

Operation Mode ◽

The Self ◽

X Ray ◽

Short Period ◽

Recent Developments ◽

Output Characteristics

The optimal parameter space for an X-ray free-electron laser (FEL) in the self-amplified spontaneous emission (SASE) operation mode is examined. This study focuses on FEL operation with a shorter undulator period and higher undulator strength made available through recent developments in in-vacuum, cryogenic and superconducting undulators. Progress on short-period undulator technologies is surveyed and FEL output characteristics versus undulator parameters are computed. The study is performed on a case of the planned soft-X-ray FEL at the MAX IV Laboratory in Sweden. An extension of the SASE mode into the harmonic lasing self-seeded mode is also analysed.

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QFEL: A NUMERICAL CODE FOR MULTI-DIMENSIONAL SIMULATION OF FREE ELECTRON LASERS IN THE QUANTUM REGIME

International Journal of Modern Physics A ◽

10.1142/s0217751x07037792 ◽

2007 ◽

Vol 22 (23) ◽

pp. 4245-4253 ◽

Cited By ~ 1

Author(s):

A. SCHIAVI ◽

N. PIOVELLA ◽

G. R. M. ROBB ◽

R. BONIFACIO

Keyword(s):

Parameter Space ◽

Free Electron ◽

Numerical Code ◽

Simulation Tool ◽

Free Electron Lasers ◽

Quantum Regime ◽

Dimensional Simulation

A new simulation tool has been developed for the simulation of the FEL equations in both the classical and quantum regimes to be applied to the investigation of proposed FEL models and to the exploration of parameter space for new experiments.

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Oscillations of the free electron concentration in a semiconductor under the action of a femtosecond pulse

Optics and Spectroscopy ◽

10.1134/1.1953986 ◽

2005 ◽

Vol 98 (6) ◽

pp. 907-912

Author(s):

M. M. Loginova ◽

V. A. Trofimov

Keyword(s):

Electron Concentration ◽

Free Electron ◽

Femtosecond Pulse ◽

Free Electron Concentration

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The Next Generation of X-ray Sources

Reviews of Accelerator Science and Technology ◽

10.1142/s1793626810000452 ◽

2010 ◽

Vol 03 (01) ◽

pp. 185-202 ◽

Cited By ~ 11

Author(s):

Claudio Pellegrini

Keyword(s):

Electron Beam ◽

Free Electron ◽

High Intensity ◽

Femtosecond Pulse ◽

Narrow Linewidth ◽

Free Electron Lasers ◽

Next Generation ◽

Successful Development ◽

High Brightness ◽

X Ray

We discuss recent results on soft and hard X-ray free electron lasers (FELs) and how they can be used to design and optimize the next generation of these sources of high brightness, coherent photons, with femtosecond pulse duration, or very narrow linewidth. In particular, we consider the experimental and theoretical progress in the electron beam generation and manipulation. These results, when combined with the successful development of powerful simulation codes, can be used to design optimized, high intensity sources of coherent photons, and to reduce their size and cost.

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Artifact-free electron microscopic immunocytochemistry on rat brain tissue

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100085666 ◽

1991 ◽

Vol 49 ◽

pp. 272-273

Author(s):

Veronika Burmeister ◽

N. Ludvig ◽

P.C. Jobe

Keyword(s):

Microscopic Examination ◽

Free Electron ◽

Electron Microscopic Examination ◽

Ultrastructural Localization ◽

Rabbit Serum ◽

Electron Microscopic ◽

Electron Microscopic Immunocytochemistry ◽

Phosphate Buffered Saline ◽

Rat Brain Tissue ◽

Immune Rabbit

Electron microscopic immunocytochemistry provides an important tool to determine the ultrastructural distribution of various molecules in both normal and pathologic tissues. However, the specific immunostaining may be obscured by artifactual immunoreaction product, misleading the investigator. Previous observations show that shortening the incubation period with the primary antibody from the generally used 12-24 hours to 1 hour substantially reduces the artifactual immunostaining. We now extend this finding by the demonstration of artifact-free ultrastructural localization of the Ca2/calmodulindependent cyclic nucleotide phosphodiesterase (CaM-dependent PDE) immunoreactivity in brain.Anesthetized rats were perfused transcardially with phosphate-buffered saline followed by a fixative containing paraformaldehyde (4%) and glutaraldehyde (0.25%) in PBS. The brains were removed, and 40μm sections were cut with a vibratome. The sections were processed for immunocytochemistry as described by Ludvig et al. Both non-immune rabbit serum and specific CaM-dependent PDE antibodies were used. In both experiments incubations were at one hour and overnight. The immunostained sections were processed for electron microscopic examination.

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