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Thursday, July 30, 2020 | History

2 edition of Duopigatron ion source studies found in the catalog.

Duopigatron ion source studies

Frank M Bacon

Duopigatron ion source studies

by Frank M Bacon

  • 270 Want to read
  • 39 Currently reading

Published by Dept. of Energy, [Office of the Assistant Secretary for Defense Programs], Sandia Laboratories, for sale by the National Technical Information Service in [Albuquerque, N.M.], Springfield, Va .
Written in English

    Subjects:
  • Ionization chambers

  • Edition Notes

    StatementFrank M. Bacon, Tube Development Division 2354, Robert W. Bickes, Jr., James B. O"Hagan, Atomic and Arc Physics Division 2352, Sandia Laboragtories
    SeriesSAND ; 77-1789
    ContributionsBickes, Robert W., joint author, O"Hagan, James B., joint author, United States. Dept. of Energy, Sandia Laboratories
    The Physical Object
    Pagination26 p. :
    Number of Pages26
    ID Numbers
    Open LibraryOL14882864M

      Ion source development for D–D neutron production started in the s and by the end of s deuterium ion beams with the intensity exceeding mA were extracted from a duopigatron ion source and sent to the target for producing fusion neutrons. The duopigatron ion source is a two-stage discharge between a hot cathode, an intermediate. These systems use 4 A of H + and ions at keV from a duoPIGatron ion source. These heaters are capable of increasing the ion temperatures in the 8 × 10 5 cm 3 ORMAK plasma volume to several keV at densities of ≈ ×10 13 cm −3.

    Explore the latest full-text research PDFs, articles, conference papers, preprints and more on SIESTA. Find methods information, sources, references or conduct a literature review on SIESTA. The Handbook of Ion Sources delivers the data needed for daily work with ion sources. It also gives information for the selection of a suitable ion source and ion production method for a specific Handbook concentrates on practical aspects and introduces the principle function of ion sources. The basic plasma parameters are defined and discussed.5/5(1).

    @article{osti_, title = {Negative ion source with hollow cathode discharge plasma}, author = {Hershcovitch, A and Prelec, K}, abstractNote = {A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low. The U.S. Department of Energy's Office of Scientific and Technical Information.


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Duopigatron ion source studies by Frank M Bacon Download PDF EPUB FB2

Get this from a library. Duopigatron ion source studies. [Frank M Bacon; Robert W Bickes; James B O'Hagan; United States. Department of Energy.; Sandia Laboratories.]. Experimental studies with a duopigatron gas discharge ion source are described; measurements of the ion current, mass and energy distributions, and current density profiles as a function of the aperture sizes of the source electrodes are reported.

Larger aperture diameters were required to minimize damage to the original ion source [configuration described in Rev. Sci. Instrum. 49, ( Cited by: 6. In an effort to develop a plasma source capable of producing a dense, quiescent, uniform plasma for extracting tens of amperes of hydrogen ions, experimental and theoretical studies on a duoPIGatron ion source have been pursued.

A study of plasma generation in the duoPIGatron was begun and a discharge model was subsequently developed to explain observed source by: A systematic study of the duopigatron has shown that this type of source is very convenient for the production of intense D.

ion beams (> 10??A) of heavy elements with moderate charge states, if the operation and design parameters are properly matched. The charge state density distribution compares with the best results reported for d. duoplasmatrons, whereas the discharge power is less Cited by: 4. @article{osti_, title = {15 cm duoPIGatron ion source}, author = {Stirling, W.

and Tsai, C. and Ryan, P. M.}, abstractNote = {The cm (grid diameter) duoPIGatron ion source produces pulsed hydrogen ion beams of 10 to 15 A beam current in the to keV energy range for a duration of a few tenths of a second.

To fulfill the requirements of the next generation of high-power. In an effort to develop a plasma source capable of producing a dense, quiescent, uniform plasma for extracting tens of amperes of hydrogen ions, experimental and theoretical studies on a duoPIGatron ion source were pursued.

A study of plasma generation in the duoPIGatron was begun, and a discharge model was subsequently developed to explain observed source behavior. The DuoPIGatron ion source concept at Oak Ridge has proven itself capable of providing multiampere beams at tens of kilovolts.

The DuoPIGatron II operates very reliably at 6–8 A total output current in the 25–35 kV range. Impurity level is easily maintained below % and the sec pulses show no appreciable wear on the copper accel–decel electrode system after thousands of pulses with.

An ion source material recycling efficiency of 60% (tentatively assumed) increases the total achievable efficiency by another factor of after five runs. The most favoura- ble ion sources in order of decreasing efficiency are: negative ion sputter source (), duoPIGatron (), arc discharge ion source ().

•Duopigatron •Laser ion source Suggested Literature - Books • We have added references through-out the presentations- the presentations will be posted on the USPAS web • Townsend studies gas discharges in partially evacuated tubes with two electrodes.

The system is composed of a DuoPIGatron type ion source, three consecutive grids for ion extraction, acceleration and beam focusing, a differential pumping stage, a dipole magnet for mass filtering, a quadrupole doublet lens, a target chamber, a load-lock, and a.

The ion source was developed to study physical and technological aspects relevant to an industrial ion source. The side extraction duoPIGatron has a stable arc, uniformly bright illumination, and dense plasma. The present work describes some operating parameters of the ion source using argon and BF3.

Negative-ion sources have been developed according to requirements from their application fields such as accelerators, fusion research, and material science. Several kinds of high-current hydrogen negative-ion sources, such as the magnetron, Penning, Ionization Gauge (PIG), multicusp, and duopigatron types, were developed.

A DuoPIGatron ion source, originally designed for positive ion generation, has been modified for H − extraction. To use as high current H − ion source, the extracted high-current electron beams together with the H − ions should be dumped and the H − ion density should be enriched.

These problems are solved by a pair of permanent magnet which is located inside the target electrode. The ion source was developed to study physical and technological aspects relevant to an industrial ion source. The side extraction duoPIGatron has stable arc, uniformly bright illumination, and.

A series of Langmuir probe studies has been undertaken on the hydrogen plasma of an 8×8-cm extraction area hollow cathode, magnetic multipole ion source intended for use in neutral beam injection systems.

Five movable probes were utilized to measure plasma density, electron temperature, plasma potential, and primary electron density as a function of position in the plasma generator and. Proposed cesium surface configuration of a duoPIGatron negative ion source. J.H. Whealton /Negative ion sources the extraction region for deleterious acceleration.

The improvement we suggest to this design is shown in fig. 2c, in which the slot groove shape shown in fig.

2b is replaced by cylinder-like dents and the slot extraction electrode is. Preliminary studies concerning the comparative organ and subcellular distribution of /sup m/Pt-labeled cis- and trans- dichlorodiamineplatinum(II) have been completed.

The results of in vivo studies have shown the cis isomer to bind to nuclear DNA to a significantly more. The system is composed of a DuoPIGatron type ion source, three consecutive grids for ion extraction, acceleration and beam focusing, a differential pumping stage, a dipole magnet for mass.

DuoPIGatron ion source. Table 1 CHORDIS ion beam currents Table 2 DuoPIGatron ion beam currents Element Ion current (mA) Element Ion current (mA) Iodine Lithium Bismuth Xenon Argon 28 59 37 71 86 Hydrogen Argon Xenon Oxygen Lithium 98 M. Shubaly / Ion sourcery for isotope separators Fig. Internal oven for "hot.

In this experiment, we used gas ions (argon [Ar +] and krypton [Kr +]) and a metal ion (iron [Fe +]) in which the gas ions and the metal ion were produced using a duoPIGatron ion source and a Burnace ion source, respectively.

The ions were accelerated up to keV by using an electrostatic acceleration tube, and selected by a mass separation. ion source for cw high-current, low-emittance accelerators[4].

To confirm those favorable intensive studies on theory and experiments have been performed since then. Though stream may provide electrons to Duopigatron ion sources, and replace an arc filament in the source as proposed by the author previously[4].The ion source was developed to study physical and technological aspects relevant to an industrial ion source.

The side extraction duoPIGatron has stable arc, uniformly bright illumination, and dense plasma. Positive characteristics of the ion source are the long life time of the cathode filament, the great values of the discharge current (up.Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link) http.