English
Related papers

Related papers: A compact low energy proton source

200 papers

High-energy hadronic reactions with proton-to-neutron transitions (and vice versa) with small momentum transfer allow to study the properties of nearly on-shell pions, which cannot be accessed otherwise. We overview the recent results for…

High Energy Physics - Phenomenology · Physics 2015-11-02 B. Z. Kopeliovich , I. K. Potashnikova , Ivan Schmidt

Surface plasmon (SP) excitation in intense laser interaction with solid target can be exploited for enhancing secondary emissions, in particular efficient acceleration of high charge electron bunches. Previous studies have mostly used…

Plasma Physics · Physics 2022-07-07 J. Sarma , A. McIlvenny , N. Das , M. Borghesi , A. Macchi

Positron beams, both polarized and non-polarized, low and high energy have a wide range of applications and many methods can be used to produce them. In this paper we analyse the two main methods used to produce positrons for accelerator…

Accelerator Physics · Physics 2021-03-25 Alberto Bacci , Francesco Broggi , Vittoria Petrillo , Luca Serafini

Electron Cyclotron Resonance Ion Sources are currently the most efficient ion sources among those used in facilities dedicated to nuclear physics. The need for a more flexible magnetic field and RF injection system suggested to design and…

We designed, demonstrated, and characterized an atom source based on fiber-based pulsed laser ablation. By using commercially available miniature lens system for focusing nanosecond pulsed laser of up to 225~$\mu$J delivered through a…

Atomic Physics · Physics 2023-05-17 Alto Osada , Ryuta Tamaki , Wenbo Lin , Ippei Nakamura , Atsushi Noguchi

A novel radiation pressure acceleration (RPA) regime of heavy ion beams from laser-irradiated ultrathin foils is proposed by self-consistently taking into account the ionization dynamics. In this regime, the laser intensity is required to…

Plasma Physics · Physics 2015-06-19 Dong Wu , B. Qiao , X. T. He , C. McGuffey , F. N. Beg

In the framework of $k_T$-factorization approach, the production and polarization of prompt $J/\psi$ mesons at the LHC energies is studied. Our consideration is based on the non-relativistic QCD formalism for bound states and off-shell…

High Energy Physics - Phenomenology · Physics 2017-08-25 S. P. Baranov , A. V. Lipatov

The basic principles of design for the compact ion source of new generation are presented. The device uses the local ion trap created by the axial electron beam rippled in a thick magnetic lens. In accordance with this feature, the ion…

Plasma Physics · Physics 2015-06-02 V. P. Ovsyannikov , A. V. Nefiodov

We report the design and experimental demonstration of a compact, reconfigurable Penning ion trap constructed with rare-earth permanent magnets placed outside of a trap vacuum enclosure. We describe the first observation of Doppler laser…

Atomic Physics · Physics 2020-01-15 Brian J. McMahon , Curtis Volin , Wade G. Rellergert , Brian C. Sawyer

Low-temperature plasma (LTP) processing is a green and flexible food processing technology with only known limitation of low energy efficiency. Three established fundamental mechanisms of plasma food processing includes: i) physical damage…

Emission of pairs of photons in the interface metal-dielectric under the laser excitation arising due to the time-dependent perturbation of the zero-point fluctuations of the electromagnetic field by photons of the laser is considered. The…

Optics · Physics 2014-05-16 Vladimir Hizhnyakov

We consider the generation of electric currents in the solar chromosphere where the ionization level is typically low. We show that ambient electrons become magnetized even for weak magnetic fields (30 G); that is, their gyrofrequency…

Solar and Stellar Astrophysics · Physics 2010-11-29 V. Krasnoselskikh , G. Vekstein , H. S. Hudson , S. D. Bale , W. P. Abbett

The generation and capture of polarized positrons at a source with a superconducting helical undulator having 4.3 cm period and 500 GeV electron drive beam have been simulated. The positron polarization has been calculated for the different…

Accelerator Physics · Physics 2013-01-09 Andriy Ushakov , Gudrid Moortgat-Pick , Sabine Riemann , Wanming Liu , Wei Gai

Employing colliding-pulse injection has been shown to enable high-quality electron beams to be generated from laser-plasma accelerators. Here by leveraging test particle simulations, Hamiltonian analysis, and multidimensional…

Accelerator Physics · Physics 2023-10-09 Zheng Gong , Michael J. Quin , Simon Bohlen , Christoph H. Keitel , Kristjan Põder , Matteo Tamburini

The mixing of N2 with H2 leads to very different plasmas from pure N2 and H2 plasma discharges. Numerous issues are therefore raised involving the processes leading to ammonia (NH3) formation. The aim of this work is to better characterize…

We reexamine the low-energy expansion of polarized Compton scattering off the proton and show that the leading non-Born contribution to the beam asymmetry of low-energy Compton scattering is given by the magnetic polarizability alone, the…

Nuclear Theory · Physics 2014-05-07 Nadiia Krupina

I consider coherent vibrational states of the quantum plasmas formed by the conduction electrons and protons inside a metal hydride. Such states can interact coherently through weak interaction to produce neutrons at very low energy. The…

General Physics · Physics 2022-09-14 Luca Gamberale

We report a demonstration of simple and effective loading of strontium ions into a linear radio frequency Paul trap using photoionization. The ionization pathway is 5s2 1S0 -- 5s5p 1P1 -- 5p2 1D2, and the 5p2 1D2 final state is…

Quantum Physics · Physics 2007-05-23 K. Vant , J. Chiaverini , W. Lybarger , D. J. Berkeland

Several diatomic transition metal oxides, rare-earth metal oxides and fluorides have the unusual property that their bond dissociation energy is larger than their ionization energy. In these molecules, bound levels above the ionization…

Atomic and Molecular Clusters · Physics 2024-06-06 Sascha Schaller , Johannes Seifert , Giacomo Valtolina , André Fielicke , Boris G. Sartakov , Gerard Meijer

The mean energy $W$ required to produce an ion pair in molecular hydrogen has been obtained for protons in the energy range between 1 MeV and 4.5 MeV. The W values were derived from the existing experimental data on elastic {\it $\pi^-$p}…

Instrumentation and Detectors · Physics 2014-05-23 G. A. Korolev , G. D. Alkhazov , A. V. Dobrovolsky , A. V. Khanzadeev , A. A. Vorobyov
‹ Prev 1 8 9 10 Next ›