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Ion sources are key components of accelerators devoted to different types of medical applications: hadron-therapy facilities (accelerating protons or carbon ions), high-intensity accelerators for boron-neutron capture therapy (using intense…

Accelerator Physics · Physics 2018-04-24 Santo Gammino

The ability to directly measure radiative-association rate coefficients for reactions between ions and neutral molecules has long challenged chemical physics laboratories, yet radiative association is one of the most important processes…

High-energy-density electron-positron pair plasma production and its dynamics in a thin foil illuminated by two counter-propagating laser pulses are investigated through multi-dimensional particle-in-cell simulations. We compare the…

Plasma Physics · Physics 2020-07-07 W. Y. Liu , W. Luo , T. Yuan , J. Y. Yu , M. Chen , Z. M. Sheng

An ion beam cooler and buncher has been developed for the manipulation of radioactive ion beams. The gas-filled linear radiofrequency ion trap system is installed at the Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN. Its purpose is…

This work presents an analysis of the ion outflow from magnetic reconnection throughout fully kinetic simulations with typical laboratory plasmas values. A symmetric initial configuration for the density and magnetic field is considered…

Plasma Physics · Physics 2016-11-23 Emanuele Cazzola , Davide Curreli , Stefano Markidis , Giovanni Lapenta

A proton beamline consisting of an inductively coupled plasma (ICP) source, two solenoid magnets, two steerer magnets and a radio frequency quadrupole (RFQ) is developed at the Turkish Atomic Energy Authority's (TAEA) Saraykoy Nuclear…

Accelerator Physics · Physics 2017-08-08 G. Turemen , Y. Akgun , A. Alacakir , I. Kilic , B. Yasatekin , E. Ergenlik , S. Ogur , E. Sunar , V. Yildiz , F. Ahiska , E. Cicek , G. Unel

In this report, we describe characteristics of a ring-structure hydrogen plasma heated in electron cyclotron resonance conditions and confined in a mirror magnetic trap and discuss the relative efficiency of secondary electrons and…

Plasma Physics · Physics 2007-05-23 Angel Jose Chacon Velasco , Valeri Dougar-Jabon

Plasma sheath is the non-neutral space charge region that isolates bulk plasma from boundary. Radio-frequency (RF) sheathes are formed when applying RF voltage to electrodes. Generally, applied bias is mainly consumed by RF sheath which…

Plasma Physics · Physics 2020-03-11 Guang-Yu Sun , An-Bang Sun , Guan-Jun Zhang

In the past three decades, the development of nuclear physics facilities for fundamental and applied science purposes has required an increasing current of multicharged ion beams. Multiple ionization implies the formation of dense and…

Accelerator Physics · Physics 2014-10-30 S. Gammino

Recently, the use of $\mathrm{H}_2^+$ ions instead of protons to overcome space charge challenges in compact cyclotrons has received much attention. This technique has the potential to increase the available beam current from compact…

Accelerator Physics · Physics 2022-01-05 Daniel Winklehner , Janet M. Conrad , Joseph Smolsky , Loyd Waites

The growth of a longitudinal or quasi-longitudinal Langmuir mode in the outward-moving beam of ions and protons that forms the open sector of an ion-proton pulsar magnetosphere radiates as an analogue of an end-fed high-impedance horizontal…

High Energy Astrophysical Phenomena · Physics 2023-03-29 P B Jones

Wireless transfer of power via high frequency microwave radiation using a miniature split ring resonator rectenna is reported. RF power is converted into DC power by integrating a rectification circuit with the split ring resonator. The…

Presently large efforts are conducted towards the development of highly brilliant gamma beams via Compton back scattering of photons from a high-brilliance electron beam, either on the basis of a normal-conducting electron linac or a…

Nuclear Experiment · Physics 2015-05-27 C. Hugenschmidt , K. Schreckenbach , D. Habs , P. G. Thirolf

Ambient RF (Radio Frequency) energy harvesting technique has recently been proposed as a potential solution to provide proactive energy replenishment for wireless devices. This paper aims to analyze the performance of a battery-free…

Networking and Internet Architecture · Computer Science 2016-11-17 Ian Flint , Xiao Lu , Nicolas Privault , Dusit Niyato , Ping Wang

Experiments with electron or ion matter waves require a coherent, monochromatic and long-term stable source with high brightness. These requirements are best fulfilled by single atom tip (SAT) field emitters. The performance of an iridium…

Electron heating and ionization dynamics in capacitively coupled radio frequency (RF) atmospheric pressure microplasmas operated in helium are investigated by Particle in Cell simulations and semi-analytical modeling. A strong heating of…

Plasma Physics · Physics 2013-06-03 T. Hemke , D. Eremin , T. Mussenbrock , A. Derzsi , Z. Donkó , K. Dittmann , J. Meichsner , J. Schulze

We report the results of a survey for HI 21-cm absorption at z < 0.4 in a new sample of radio sources with the Giant Metrewave Radio Telescope. Of the 11 sources for which there are good data, we obtain zero detections, where four are…

Astrophysics of Galaxies · Physics 2019-01-16 S. J. Curran , R. W. Hunstead , H. M. Johnston , M. T. Whiting , E. M. Sadler , J. R. Allison , R. Athreya

The LANSCE Isotope Production Facility (IPF) utilizes a 100-MeV proton beam with average power of 23 kW for isotope production in the fields of medicine, nuclear physics, national security, environmental science and industry. Typical…

Accelerator Physics · Physics 2020-02-26 Yuri K. Batygin

A new compact electron cyclotron resonance (ECR) ion source for low current applications, designed and built in-house at the University of the Basque Country (UPV/EHU) is presented. The source was designed to use as many commercially…

Ions confined using a Paul trap require a stable, high voltage and low noise radio frequency (RF) potential. We present a guide for the design and construction of a helical coil resonator for a desired frequency that maximises the quality…

Atomic Physics · Physics 2015-05-28 J. D. Siverns , L. R. Simkins , S. Weidt , W. K. Hensinger