scholarly journals Signatures of quantum effects on radiation reaction in laser–electron-beam collisions

2017 ◽  
Vol 83 (5) ◽  
Author(s):  
C. P. Ridgers ◽  
T. G. Blackburn ◽  
D. Del Sorbo ◽  
L. E. Bradley ◽  
C. Slade-Lowther ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Pulse ◽  
High Intensity ◽  
Average Energy ◽  
Quantum Effects ◽  
Radiation Reaction ◽  
High Intensity Laser ◽  
Efficiency Parameter ◽  
Laser Systems ◽  
Intensity Laser

Two signatures of quantum effects on radiation reaction in the collision of a ${\sim}$GeV electron beam with a high intensity (${>}3\times 10^{20}~\text{W}~\text{cm}^{-2}$) laser pulse have been considered. We show that the decrease in the average energy of the electron beam may be used to measure the Gaunt factor $g$ for synchrotron emission. We derive an equation for the evolution of the variance in the energy of the electron beam in the quantum regime, i.e. quantum efficiency parameter $\unicode[STIX]{x1D702}\not \ll 1$. We show that the evolution of the variance may be used as a direct measure of the quantum stochasticity of the radiation reaction and determine the parameter regime where this is observable. For example, stochastic emission results in a 25 % increase in the standard deviation of the energy spectrum of a GeV electron beam, 1 fs after it collides with a laser pulse of intensity $10^{21}~\text{W}~\text{cm}^{-2}$. This effect should therefore be measurable using current high-intensity laser systems.

scholarly journals Radiation reaction in electron–beam interactions with high-intensity lasers

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
T. G. Blackburn
Keyword(s):  
Electromagnetic Fields ◽  
High Intensity ◽  
Large Scale ◽  
Radiation Reaction ◽  
Emit Radiation ◽  
High Intensity Laser ◽  
Laser Systems ◽  
Conservation Of Momentum ◽  
Individual Photon ◽  
Intensity Laser

AbstractCharged particles accelerated by electromagnetic fields emit radiation, which must, by the conservation of momentum, exert a recoil on the emitting particle. The force of this recoil, known as radiation reaction, strongly affects the dynamics of ultrarelativistic electrons in intense electromagnetic fields. Such environments are found astrophysically, e.g. in neutron star magnetospheres, and will be created in laser–matter experiments in the next generation of high-intensity laser facilities. In many of these scenarios, the energy of an individual photon of the radiation can be comparable to the energy of the emitting particle, which necessitates modelling not only of radiation reaction, but quantum radiation reaction. The worldwide development of multi-petawatt laser systems in large-scale facilities, and the expectation that they will create focussed electromagnetic fields with unprecedented intensities $$> 10^{23}\,\mathrm {W}\text {cm}^{-2}$$ > 10 23 W cm - 2 , has motivated renewed interest in these effects. In this paper I review theoretical and experimental progress towards understanding radiation reaction, and quantum effects on the same, in high-intensity laser fields that are probed with ultrarelativistic electron beams. In particular, we will discuss how analytical and numerical methods give insight into new kinds of radiation–reaction-induced dynamics, as well as how the same physics can be explored in experiments at currently existing laser facilities.

scholarly journals Targets with cone-shaped microstructures from various materials for enhanced high-intensity laser–matter interaction

2021 ◽  
Vol 9 ◽  
Author(s):  
Tina Ebert ◽  
René Heber ◽  
Torsten Abel ◽  
Johannes Bieker ◽  
Gabriel Schaumann ◽  
...  
Keyword(s):  
Laser Pulse ◽  
High Intensity ◽  
Ultrashort Laser Pulse ◽  
Process Chain ◽  
Pulse Processing ◽  
High Intensity Laser ◽  
Matter Interaction ◽  
Different Characteristics ◽  
Ultrashort Laser ◽  
Intensity Laser

Abstract Targets with microstructured front surfaces have shown great potential in improving high-intensity laser–matter interaction. We present cone-shaped microstructures made out of silicon and titanium created by ultrashort laser pulse processing with different characteristics. In addition, we illustrate a process chain based on moulding to recreate the laser-processed samples out of polydimethylsiloxane, polystyrol and copper. With all described methods, samples of large sizes can be manufactured, therefore allowing time-efficient, cost-reduced and reliable ways to fabricate large quantities of identical targets.

High-contrast, high-intensity laser pulse generation using a nonlinear preamplifier in a Ti:sapphire laser system

2008 ◽  
Vol 33 (7) ◽  
pp. 645 ◽  
Author(s):  
Hiromitsu Kiriyama ◽  
Michiaki Mori ◽  
Yoshiki Nakai ◽  
Takuya Shimomura ◽  
Manabu Tanoue ◽  
...  
Keyword(s):  
Laser Pulse ◽  
High Intensity ◽  
Laser System ◽  
Pulse Generation ◽  
High Contrast ◽  
Ti:Sapphire Laser ◽  
High Intensity Laser ◽  
Intensity Laser

Effects of electron recirculation on a hard x-ray source observed during the interaction of a high intensity laser pulse with thin Au targets

2013 ◽  
Vol 20 (12) ◽  
pp. 123111 ◽  
Author(s):  
A. Compant La Fontaine ◽  
C. Courtois ◽  
E. Lefebvre ◽  
J. L. Bourgade ◽  
O. Landoas ◽  
...  
Keyword(s):  
Laser Pulse ◽  
High Intensity ◽  
X Ray ◽  
High Intensity Laser ◽  
Intensity Laser

Interaction of a high-intensity laser pulse with a surface: plasma generation, self-action, and instabilities

2000 ◽  
Author(s):  
Victor A. Aleshkevich ◽  
Yaroslav V. Kartashov ◽  
P. A. Polyakov ◽  
Victor A. Vysloukh ◽  
A. S. Zhukarev
Keyword(s):  
Laser Pulse ◽  
High Intensity ◽  
Surface Plasma ◽  
Plasma Generation ◽  
High Intensity Laser ◽  
Intensity Laser
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