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Spectral properties and performance of multi-pulse impulse radio ultra-wideband systems with pulse-based polarity randomization are analyzed. Instead of a single type of pulse transmitted in each frame, multiple types of pulses are…

Information Theory · Computer Science 2007-07-13 Sinan Gezici , Zafer Sahinoglu , Hisashi Kobayashi , H. Vincent Poor

We report on the design of a new type of electron gun to be used for experiments of infrared emission spectroscopy of rare gas excimers. It is based on a filament heated by means of a pack of rechargeable batteries floated atop the…

Instrumentation and Detectors · Physics 2011-09-16 L. Barcellan , E. Berto , G. Carugno , G. Galet , G. Galeazzi , A. F. Borghesani

Backward Raman amplification of laser pulses in plasmas can produce nearly relativistic unfocused output intensities and multi-exawatt powers in compact devices. The largest achievable intensity depends on which of major competitive…

Plasma Physics · Physics 2015-06-22 V. M. Malkin , Z. Toroker , N. J. Fisch

The investigation of the spectral kinetic model of the Multipole Resonance Probe (MRP) is presented and discussed in this paper. The MRP is a radio-frequency driven probe of the particular spherical design, which is suitable for the…

Plasma Physics · Physics 2022-11-30 Junbo Gong , Michael Friedrichs , Jens Oberrath , Ralf Peter Brinkmann

In pulsed dynamic nuclear polarization (DNP), enhancement of the polarization of bulk nuclei requires the repeated application of a microwave pulse sequence. So far, analysis of a one-time transfer of electron spin polarization to a…

Chemical Physics · Physics 2025-07-24 Shebha Anandhi Jegadeesan , Yujie Zhao , Graham M. Smith , Ilya Kuprov , Guinevere Mathies

In this paper, we extend the results of an earlier paper in which we had demonstrated the limitations of the notion of non-resonant multiphoton ionization, in the exploration of photon statistics effects in non-linear processes. Through the…

Atomic Physics · Physics 2019-06-21 G. Mouloudakis , P. Lambropoulos

Important ongoing research on mode-locked fiber lasers aims at developing new types of multi-soliton regimes, such as soliton molecules, molecular complexes or soliton crystals. The on-demand generation of such multi-pulse structures is a…

Optics · Physics 2024-02-13 Patrice Tchofo-Dinda , Alix Malfondet , Philippe Grelu , Guy Millot

High-brightness electron bunches, such as those generated and accelerated in free-electron lasers (FELs), can develop small-scale structure in the longitudinal phase space. This causes variations in the slice energy spread and current…

Photon magnon hybrid systems present a promising platform for the development of next generation devices in quantum information processing and quantum sensing technologies. In this study, we investigate the control of photon magnon coupling…

Materials Science · Physics 2026-01-15 Sachin Verma , Jiten Mahalik , Abhishek Maurya , Rajeev Singh , Biswanath Bhoi

We explore the effects of ultrafast shaped pulses for two-level systems that do not have a single photon resonance by developing a multiphoton density-matrix approach. We take advantage of the fact that the dynamics of the intermediate…

Optics · Physics 2009-11-07 S. Abbas Hosseini , Debabrata Goswami

We present a momentum-resolved study of strong field multiple ionization of ionic targets. Using a deconvolution method we are able to reconstruct the electron momenta from the ion momentum distributions after multiple ionization up to four…

Atomic Physics · Physics 2015-06-23 P. Wustelt , M. Möller , T. Rathje , A. M. Sayler , T. Stöhlker , G. G. Paulus

This paper provides a constructive passivity-based control approach to solve the set-point regulation problem for input-affine continuous nonlinear systems while considering saturation in the inputs. As customarily in passivity-based…

Systems and Control · Electrical Eng. & Systems 2021-09-23 Pablo Borja , Carmen Chan-Zheng , Jacquelien M. A. Scherpen

It is shown that $f$-electron multipole is naturally defined as spin-charge one-electron density operator in the second-quantized form with the use of tensor operator on the analogy of multipole expansion of electromagnetic potential from…

Strongly Correlated Electrons · Physics 2015-05-13 Takashi Hotta

The intensity of an electromagnetic wave interacting self-consistently with a beam of charged particles as in a free electron laser, displays large oscillations due to an aggregate of particles, called the macro-particle. In this article,…

We study numerically stabilization against ionization of a fully correlated two-electron model atom in an intense laser pulse. We concentrate on two frequency regimes: very high frequency, where the photon energy exceeds both, the…

Atomic Physics · Physics 2009-10-31 D. Bauer , F. Ceccherini

The Microbunched Electron Cooling (MBEC) proposed by D. Ratner is a promising cooling technique that can find applications in future hadron and electron-ion colliders. In this paper, we develop a new framework for the study of MBEC which is…

Accelerator Physics · Physics 2018-11-07 Gennady Stupakov

The self-modulation (SM) instability transforms a long charged particle bunch traveling in plasma into a train of microbunches that resonantly drives large-amplitude wakefields. We present the first determination of the saturation length of…

The conditions of thermochemical and radiative non-equilibrium attained in nitrogen shocked flows were quantified using a vibronic state-specific model. This model, being described in a companion paper, was implemented in Euler…

Plasma Physics · Physics 2023-08-11 Élio Pereira , Jorge Loureiro , Mário Lino da Silva

Energetic electromagnetic fields produce a variety of elementary excitations in solids that can strongly modify their primary photoemission spectra. Such is the plasmon excitation or pumping mechanism which, although indirect, is very…

Materials Science · Physics 2025-04-11 Branko Gumhalter

The buildup of low energy electrons in an accelerator, known as electron cloud, can be severely detrimental to machine performance. Under certain beam conditions, the beam can become resonant with the cloud dynamics, accelerating the…

Accelerator Physics · Physics 2016-08-03 J. R. Calvey , W. Hartung , J. Makita , M. Venturini