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Title: Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies

Abstract

In this paper, the neutralized drift compression experiment was designed and commissioned as a pulsed, linear induction accelerator to drive thin targets to warm dense matter (WDM) states with peak temperatures of ~1 eV using intense, short pulses (~1 ns) of 1.2 MeV lithium ions. At that kinetic energy, heating a thin target foil near the Bragg peak energy using He+ ions leads to more uniform energy deposition of the target material than Li+ ions. Experiments show that a higher current density of helium ions can be delivered from a plasma source compared to Li+ ions from a hot plate type ion source. He+ beam pulses as high as 200 mA at the peak and 4 μs long were measured from a multi-aperture 7-cm-diameter emission area. Within ±5% variation, the uniform beam area is approximately 6 cm across. Finally, the accelerated and compressed pulsed ion beams can be used for materials studies and isochoric heating of target materials for high energy density physics experiments and WDM studies.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [1];  [2];  [1]
+ Show Author Affiliations
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1375994
Report Number(s):
LLNL-JRNL-702197
Journal ID: ISSN 0034-6748
Grant/Contract Number:  
AC52-07NA27344; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 2; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ion sources; ion beams; current density; plasma sources; pump probe experiments

Citation Formats

Ji, Q., Seidl, P. A., Waldron, W. L., Takakuwa, J. H., Friedman, A., Grote, D. P., Persaud, A., Barnard, J. J., and Schenkel, T. Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies. United States: N. p., 2015. Web. doi:10.1063/1.4932569.
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Ji, Q., Seidl, P. A., Waldron, W. L., Takakuwa, J. H., Friedman, A., Grote, D. P., Persaud, A., Barnard, J. J., & Schenkel, T. Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies. United States. https://doi.org/10.1063/1.4932569
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Ji, Q., Seidl, P. A., Waldron, W. L., Takakuwa, J. H., Friedman, A., Grote, D. P., Persaud, A., Barnard, J. J., and Schenkel, T. Thu . "Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies". United States. https://doi.org/10.1063/1.4932569. https://www.osti.gov/servlets/purl/1375994.
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@article{osti_1375994,
title = {Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies},
author = {Ji, Q. and Seidl, P. A. and Waldron, W. L. and Takakuwa, J. H. and Friedman, A. and Grote, D. P. and Persaud, A. and Barnard, J. J. and Schenkel, T.},
abstractNote = {In this paper, the neutralized drift compression experiment was designed and commissioned as a pulsed, linear induction accelerator to drive thin targets to warm dense matter (WDM) states with peak temperatures of ~1 eV using intense, short pulses (~1 ns) of 1.2 MeV lithium ions. At that kinetic energy, heating a thin target foil near the Bragg peak energy using He+ ions leads to more uniform energy deposition of the target material than Li+ ions. Experiments show that a higher current density of helium ions can be delivered from a plasma source compared to Li+ ions from a hot plate type ion source. He+ beam pulses as high as 200 mA at the peak and 4 μs long were measured from a multi-aperture 7-cm-diameter emission area. Within ±5% variation, the uniform beam area is approximately 6 cm across. Finally, the accelerated and compressed pulsed ion beams can be used for materials studies and isochoric heating of target materials for high energy density physics experiments and WDM studies.},
doi = {10.1063/1.4932569},
journal = {Review of Scientific Instruments},
number = 2,
volume = 87,
place = {United States},
year = {Thu Nov 12 00:00:00 EST 2015},
month = {Thu Nov 12 00:00:00 EST 2015}
}
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Publisher's Version of Record
https://doi.org/10.1063/1.4932569
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Works referenced in this record:

The NDCX-II engineering design
journal, January 2014

  • Waldron, W. L.; Abraham, W. J.; Arbelaez, D.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 733
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NDCX-II target experiments and simulations
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Lithium ion sources
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  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 733
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Alternate operating scenarios for NDCX-II
journal, January 2014

  • Sharp, W. M.; Friedman, A.; Grote, D. P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 733
  • DOI: 10.1016/j.nima.2013.05.081

Characteristics of the Berkeley multicusp ion source
journal, November 1979

  • Ehlers, K. W.; Leung, K. N.
  • Review of Scientific Instruments, Vol. 50, Issue 11
  • DOI: 10.1063/1.1135725

Towards pump–probe experiments of defect dynamics with short ion beam pulses
journal, November 2013

  • Schenkel, T.; Lidia, S. M.; Weis, C. D.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 315
  • DOI: 10.1016/j.nimb.2013.05.074

Short intense ion pulses for materials and warm dense matter research
journal, November 2015

  • Seidl, Peter A.; Persaud, Arun; Waldron, William L.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 800
  • DOI: 10.1016/j.nima.2015.08.013
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    Works referencing / citing this record:

    Optimizing beam transport in rapidly compressing beams on the neutralized drift compression experiment – II
    journal, March 2018

    • Stepanov, Anton D.; Barnard, John J.; Friedman, Alex
    • Matter and Radiation at Extremes, Vol. 3, Issue 2
    • DOI: 10.1016/j.mre.2018.01.001

    Source-to-accelerator quadrupole matching section for a compact linear accelerator
    journal, May 2018

    • Seidl, P. A.; Persaud, A.; Ghiorso, W.
    • Review of Scientific Instruments, Vol. 89, Issue 5
    • DOI: 10.1063/1.5023415

    Design and implementation of a Thomson parabola for fluence dependent energy-loss measurements at the Neutralized Drift Compression eXperiment
    journal, October 2018

    • Treffert, F.; Ji, Q.; Seidl, P. A.
    • Review of Scientific Instruments, Vol. 89, Issue 10
    • DOI: 10.1063/1.5030541

    Demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact linear accelerators
    journal, May 2019

    • Vinayakumar, K. B.; Ardanuc, S.; Ji, Q.
    • Journal of Applied Physics, Vol. 125, Issue 19
    • DOI: 10.1063/1.5091979

    Optimizing Beam Transport in Rapidly Compressing Beams on the Neutralized Drift Compression Experiment - II
    preprint, January 2017

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