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

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4932569· OSTI ID:1375994
 [1];  [1];  [1];  [1];  [2];  [2];  [1];  [2];  [1]
  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)
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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.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC52-07NA27344; AC02-05CH11231
OSTI ID:
1375994
Report Number(s):
LLNL-JRNL-702197
Journal Information:
Review of Scientific Instruments, Vol. 87, Issue 2; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (7)

The NDCX-II engineering design
  • 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 https://doi.org/10.1016/j.nima.2013.05.063
journal January 2014
NDCX-II target experiments and simulations
  • Barnard, J. J.; More, R. M.; Terry, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 733 https://doi.org/10.1016/j.nima.2013.05.096
journal January 2014
Lithium ion sources
  • Roy, Prabir K.; Greenway, Wayne G.; Grote, Dave P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 733 https://doi.org/10.1016/j.nima.2013.05.086
journal January 2014
Alternate operating scenarios for NDCX-II
  • 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 https://doi.org/10.1016/j.nima.2013.05.081
journal January 2014
Characteristics of the Berkeley multicusp ion source journal November 1979
Towards pump–probe experiments of defect dynamics with short ion beam pulses journal November 2013
Short intense ion pulses for materials and warm dense matter research
  • 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 https://doi.org/10.1016/j.nima.2015.08.013
journal November 2015

Cited By (6)

Optimizing beam transport in rapidly compressing beams on the neutralized drift compression experiment – II journal March 2018
Source-to-accelerator quadrupole matching section for a compact linear accelerator journal May 2018
Design and implementation of a Thomson parabola for fluence dependent energy-loss measurements at the Neutralized Drift Compression eXperiment journal October 2018
Demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact linear accelerators journal May 2019
Optimizing Beam Transport in Rapidly Compressing Beams on the Neutralized Drift Compression Experiment - II preprint January 2017
Design and Implementation of a Thomson Parabola for Fluence Dependent Energy-Loss Measurements at the Neutralized Drift Compression eXperiment text January 2018

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Related Subjects

43 PARTICLE ACCELERATORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ion sources
ion beams
current density
plasma sources
pump probe experiments