Results 31 to 40 of about 564,176 (286)

Bound-free $\mathbf{e}^+ \mathbf{e}^-$ pair creation with a linearly polarized laser field and a nuclear field

, 2008
The process of bound-free pair production of electrons and positrons in combined laser and Coulomb fields is investigated. It is assumed that an ion collides at relativistic speed with an intense x-ray laser beam of linear polarization.
Deneke, C., Müller, C.
core   +1 more source

Development of coherence in the high-gain Compton free-electron laser [PDF]

, 1992
The start-up of the free-electron laser is treated by linear analysis in the high-gain Compton regime.
Penman, C.
core   +2 more sources

Chaotic dynamics in a storage-ring Free Electron Laser

, 2002
The temporal dynamics of a storage-ring Free Electron Laser is here investigated with particular attention to the case in which an external modulation is applied to the laser-electron beam detuning.
Bruni, C., Couprie, M. E., De Ninno, G., Fanelli, D.   +3 more
core   +2 more sources

Controlled beams of shock-frozen, isolated, biological and artificial nanoparticles

Structural Dynamics, 2020
X-ray free-electron lasers promise diffractive imaging of single molecules and nanoparticles with atomic spatial resolution. This relies on the averaging of millions of diffraction patterns of identical particles, which should ideally be isolated in the ...
Amit K. Samanta, Muhamed Amin, Armando D. Estillore, Nils Roth, Lena Worbs, Daniel A. Horke, Jochen Küpper   +6 more
doaj   +1 more source

Ultrafast orbital tomography of a pentacene film using time-resolved momentum microscopy at a FEL

Nature Communications, 2022
Ultrafast pulses are useful to investigate the electron dynamics in excited atoms, molecules and other complex systems. Here, the authors measure transient photoelectron momentum maps following the free-electron laser pulse-induced ionization of a ...
Kiana Baumgärtner, Marvin Reuner, Christian Metzger, Dmytro Kutnyakhov, Michael Heber, Federico Pressacco, Chul-Hee Min, Thiago R. F. Peixoto, Mario Reiser, Chan Kim, Wei Lu, Roman Shayduk, Manuel Izquierdo, Günter Brenner, Friedrich Roth, Achim Schöll, Serguei Molodtsov, Wilfried Wurth, Friedrich Reinert, Anders Madsen, Daria Popova-Gorelova, Markus Scholz   +21 more
doaj   +1 more source

Dominant Secondary Nuclear Photoexcitation with the X-ray Free Electron Laser

, 2014
The new regime of resonant nuclear photoexcitation rendered possible by x-ray free electron laser beams interacting with solid state targets is investigated theoretically.
Gunst, Jonas, Keitel, Christoph H., Litvinov, Yuri A., Pálffy, Adriana   +3 more
core   +1 more source

Chirped seeded free-electron lasers: self-standing light sources for two-colour pump-probe experiments

, 2012
We demonstrate the possibility to run a single-pass free-electron laser in a new dynamical regime, which can be exploited to perform two-colour pump-probe experiments in the VUV/X-ray domain, using the free-electron laser emission both as a pump and as a
Allaria, Enrico, De Ninno, Giovanni, Giannessi, Luca, Mahieu, Benoît, Spampinati, Simone   +4 more
core   +3 more sources

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

Space-frequency model of amplified spontaneous emission and super-radiance in free electron laser operating in the linear and non-linear regimes

, 2002
A three-dimensional, space-frequency model for the excitation of electromagnetic radiation in a free-electron laser is presented. The approach is applied in a numerical particle code WB3D, simulating the interaction of a free-electron laser operating in ...
Amir Abramovich, Arbel, Asher Yahalom, Bonifacio, Bonifacio, Dicke, Doria, Ginzburg, Gover, Haus, Kim, Krinsky, Motz, Pinhasi, Pinhasi, Pinhasi, Rice, Rice, Saldin, Schnitzer, Schottky, Smulin, Yosef Pinhasi, Yuri Lurie   +23 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source