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A diamond-like carbon circular target is proposed to improve the $\gamma$-ray emission and pair production with lasers intensity of $8\times 10^{22} ~\mathrm{W/cm^2}$ by using two-dimensional particle-in-cell simulations with quantum…

Plasma Physics · Physics 2019-09-04 Ya-Juan Hou , Bai-Song Xie , Chong Lv , Feng Wan , Li Wang , Nureli Yasen , Hai-Bo Sang , Guo-Xing Xia

Energy dispersive X-ray fluorescence (EDXRF) is a widely used non-destructive technique for micro and trace multi-element analysis of materials. Conventional trials show that using laboratory assisted EDXRF measurements, one can obtain…

Materials Science · Physics 2021-11-08 Md. Akhlak Alam , M. K. Tiwari , Ayushi Trivedi , Ajay Khooha , A. K. Singh

Silicon photonics, compatible with large-scale silicon manufacturing, is a disruptive photonic platform that has indicated significant implications in industry and research areas (e.g., quantum, neuromorphic computing, LiDAR). Cutting-edge…

We study the stability of a collisionless, relativistic, finite-strength, cylindrical layer of charged particles in free space by solving the linearized Vlasov-Maxwell equations and compute the power of the emitted electromagnetic waves.…

Astrophysics · Physics 2007-05-23 Bjoern S. Schmekel , Richard V. E. Lovelace , Ira M. Wasserman

The synchrotron cooling of relativistic electrons is one of the most effective radiation mechanisms in astrophysics. It not only accompanies the process of particle acceleration but also has feedback on the formation of the energy…

High Energy Astrophysical Phenomena · Physics 2021-06-21 Dmitry Khangulyan , Felix Aharonian , Carlo Romoli , Andrew Taylor

We propose a method based on the slice energy spread modulation to generate strong subpicoseond density bunching in high-intensity relativistic electron beams. A laser pulse with periodic intensity envelope is used to modulate the slice…

Accelerator Physics · Physics 2017-05-24 Zhen Zhang , Lixin Yan , Yingchao Du , Wenhui Huang , Chuanxiang Tang , Zhirong Huang

We investigate the radiation from a charged particle rotating around a dielectric cylinder with a negative real part of dielectric permittivity. For the general case of frequency dispersion in dielectric permittivity, expressions are…

The experimental device for generation of undulator radiation in terahertz wavelength region by use of undulator on ferromagnets is created. The device is based on a beam of a microtrone with the energy 7.5 MeV. The radiation wavelength is…

EUV Lithography is the technology of choice for High-Volume Manufacturing (HVM) of sub-10nm lithography. One of the challenges is to enable in-situ cleaning of functional surfaces such as sensors, fiducials and interferometer mirrors…

Laser-plasma accelerators can produce ultra short electron bunches in the femtosecond to picosecond duration range, resulting in high peak dose rates in comparison with clinical accelerators. This peculiar characteristic motivates their…

High harmonic generation (HHG) in solids has emerged as a powerful spectroscopic method for resolving ultrafast electron dynamics and band structure properties across a wide range of materials. However, quantitative HHG studies require…

Optics · Physics 2025-12-16 S. Mandal , P. Kumar , Z. Pi , H. Y. Kim , M. Zhan , E. Goulielmakis

One aim of upcoming high-intensity laser facilities is to provide new high-flux gamma-ray sources. Electromagnetic cascades may serve for this, but are known to limit both field strengths and particle energies, restricting efficient…

We report the design and performance of a Littrow-type 671 nm External Cavity Diode Laser (ECDL) that delivers output power greater than 150 mW and features enhanced passive stability. The main body of the ECDL is constructed using titanium…

Optics · Physics 2023-03-03 Sourav Dutta , Bubai Rahaman

We demonstrate the highest flux tabletop source of coherent soft X-rays to date, driven by a single-stage 10 mJ Ti:sapphire regenerative amplifier at 1 kHz. We first down-convert the laser to 1.3 um using a parametric amplifier, before…

A new generation of storage ring-based light source, called diffraction-limited storage ring (DLSR), with emittance approaching the diffraction limit for multi-keV photons by means of multi-bend achromat lattice, has attracted worldwide and…

Accelerator Physics · Physics 2016-08-03 Gang Xu , Yi Jiao , Yue-Mei Peng

Femtosecond electron bunches with keV energies and eV energy spread are needed by condensed matter physicists to resolve state transitions in carbon nanotubes, molecular structures, organic salts, and charge density wave materials. These…

One of the major goals of research for laser-plasma accelerators is the realization of compact sources of femtosecond X-rays. In particular, using the modest electron energies obtained with existing laser systems, Compton scattering a…

Plasma Physics · Physics 2013-01-18 K. Ta Phuoc , S. Corde , C. Thaury , V. Malka , A. Tafzi , J. P. Goddet , R. C. Shah , S. Sebban , A. Rousse

Continuous coherent radiation in the vacuum-ultraviolet at 122 nm (Lyman-alpha) can be generated using sum-frequency mixing of three fundamental laser beams in mercury vapour. One of the fundamental beams is at 254 nm wavelength, which is…

Optics · Physics 2015-06-11 Daniel Kolbe , Martin Scheid , Jochen Walz

Purpose: To describe a concept of a compact electron accelerator for external radiation therapy with variable energy in the range of 6 - 20 MeV, based on linotron principle. Methods: Beam dynamics simulation using the CST and MAD-X code.…

Accelerator Physics · Physics 2020-08-04 L. Yu. Ovchinnikova , V. I. Shvedunov

The synchrotron mechanism has the radiation limit of about 160 MeV, and it is not possible to explain the very high energy (VHE) photons that are emitted by high-energy objects. Inverse Compton scattering as a traditional process is applied…

High Energy Astrophysical Phenomena · Physics 2021-07-28 Jirong Mao , Jiancheng Wang