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Showing 1 to 20 of 83 for “"Ion source"”.
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Development of a polarized Helium-3 ion source for RHIC using the electron beam ion source
… my work on the design and development of a source of polarized Helium-3 ions for the Relativistic Heavy Ion Collider at Brookhaven National Lab, Upton, NY. The 3He atoms will be polarized using the technique of metastability exchange optical pumping (MEOP), and will then be flowed into the …
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Ion source for Van De Graaff generator
An r-f ion source has been constructed for the V.P.I. electrostatic generator. The ion source has been in operation for approximately one thousand hours with an average beam current of one micro-ampere. This beam has been sufficient to test and calibrate the accelerator. Experiments which require …
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A polarized ≥He ion source: Measuring the polarization
An ion source has been assembled at Rice University which uses the principle of optical pumping to produce polarized He ions for extraction and acceleration. The design of an experiment to measure the degree of polarization of the ions is described. 3He+ ions are accelerated to an energy of …
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A pulsed ion source for a 250 Key Cockcroft-Walton accelerator
A Moak type radio frequency ion source, capable of producing a pulsed beam of deuterons has been built for use with a Cockcroft-Walton accelerator. Pulsed deuterons striking a deuteron target produce neutrons in bursts thus allowing dynamic measurements of moderator and reactor core properties. …
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Ion Source Development for IsoDAR and Multi-Messenger Astrophysics with KamLAND
Neutrinos can answer many open questions in physics. Doing so will require developing new technology, effective collaboration between experiments, and using existing data in new ways. This work presents contributions to these efforts with the IsoDAR, SNEWS, and KamLAND collaborations. The results …
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Developing a spin polarized helium ion source for surface electronic structure studies
… of a low energy spin polarized He$\sp+$ source for application in studies of electron spin correlations in ion neutralization at surfaces is described. The source is based on an optically pumped helium discharge. An rf discharge is used to produce metastable helium atoms in a clean pyrex …
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DEVELOPMENT OF A LOW PRESSURE-INDUCTIVELY COUPLED PLASMA-ION SOURCE FOR MASS SPECTROMETRY
… low pressure-inductively coupled plasma (LP-ICP) ion source has been investigated for the production of atomic and molecular ions for mass spectrometry (MS). A dedicated LPICP- MS was constructed, by modifying a Hewlett Packard mass selective detector, to detect ions from the LP-ICP. The ion …
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Validation and Characterization of a Laboratory Ion Source for Testing Thermal Space-Plasma Instruments
… tested in a relevant environment to prove operational functionality. Thus, we have developed an ion source to stimulate thermal plasma instruments in a vacuum chamber. This dissertation presents the mechanical design of the source, simulations of the potentials and charged particle trajectories …
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Ionic liquid ion source emitter arrays fabricated on bulk porous substrates for spacecraft propulsion
Ionic Liquid Ion Sources (ILIS) are a subset of electrospray capable of producing bipolar beams of pure ions from ionic liquids. Ionic liquids are room temperature molten salts, characterized by negligible vapor pressures, relative high conductivities and surface tensions lower than water. Compared …
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Characterization of an iodine-based ionic liquid ion source and studies on ion fragmentation
Electrosprays are a well studied source of charged droplets and ions. A specific subclass is the ionic liquid ion source (ILIS), which produce ion beams from the electrostatically stressed meniscus of ionic liquids. ILIS have several applications, two of which include space propulsion and focused …
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Plasma characterisation of an electron cyclotron resonance ion source by means of x-ray spectroscopy
The ultimate aim of any multiply-charged ion source, like the Electron Cyclotron Resonance Ion Source, ECRIS, is the production of multiply-charged ions, in sufficiently large quantities. These multiplycharged ions, in the case of the ECRIS, are created by a step-by-step ionisation process, whereby …
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The scattering of fast neutrons by lead. Construction of an ion source and accelerating tube
Many new ideas have been tried in the search of ion sources with greater output. One of the best announced in recent years is an ion source designed by A. T. Finkelstein and described in the "Review of Scientific Instruments". One of the purposes of the work discussed in this paper was the adaption …
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The mass of 22^Mg and a concept for a novel laser ion source trap
Clean and high-quality radioactive ion beams can be prepared by combining ion trap and resonance laser ionization techniques. A feasibility study for such a laser ion source trap has been carried out which shows enormous improvement in the beam emittance, purity, and in addition allows for a …
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Development of a duoplasmatron ion source at the Ithemba laboratory for accelerator based science (ithemba labs)
A cold hollow cathode duoplasmatron ion source has been designed, built, optimized and evaluated for use as an external stand-by ion source for the second injector cyclotron (SPC2) during those times that the light-ion injector cyclotron (SPCl) is out of operation and not available for …
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Design and evaluation of a laser ion source for TITAN to measure 222Rn daughter product abundances
… focuses on developing and implementing a Laser Ion Source (LIS) at TRIUMF’s Ion Trap for Atomic and Nuclear Science (TITAN) facility to achieve high-precision isotope abundance ratio mea-surements across diverse materials. The project aims to quantify long-lived daughter products of 222Rn, …
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Rapid identification, confirmation, and quantitation using an open-air ion source coupled to a time-of-flight mass spectrometer
… usually involves time consuming sample preparation and method development. The open-air ion source DART (Direct Analysis in Real Time) can ionize compounds in the gas, solid, or liquid phase without chromatography or sample preparation due to the interactions of helium metastable atoms with gas …
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Design and testing of an electron cyclotron resonance heating ion source for use in high field compact superconducting cyclotrons
… is to evaluate the feasibility of axial injection of a high brightness beam from an Electron Cyclotron Resonance ion source into a high magnetic field cyclotron. Axial injection from an ion source with high brightness is important to reduce particle losses in the first several turns of …
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Development of an ion transport system for singly charged ion injection into an electron string ion source (ESIS) charge-breeder
A 1+ ion delivery system was designed and constructed for the purpose of ion injection into the Electron String Ion Source (ESIS) charge-breeder at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The transport system was initially developed at iThemba LABS in Cape Town. This …
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Investigation and characterization of the Direct Analysis in Real Time helium metastable beam open-air ion source: Mechanism of ionization, fluid dynamic visualization, and applications
<p>The DART ion source was introduced in 2005 at the ASMS Sanibel Conference and immediately afterward Professor Sparkman was contemplating of a way to get our lab this revolutionary mass spectrometry ionization technique. It did not take long because it was delivered to the Pacific Mass …
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Performance impact of ion sources in Inertial Electrostatic Confinement devices
… Electrostatic Confinement (IEC) based fusion devices, so as to improve their effectiveness as low cost, portable neutron sources, a novel use of ion sources is proposed as a means of increasing fusion reaction rate at similar power levels. This paper aims to determine the success and …
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