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Title: Neutralization processes of atomic/molecular deuterium ions assisted by ND3 in low density D2-N2 plasmas

Abstract

The formation mechanisms of ND3+ and ND4+ are investigated in weakly ionized nitrogen-hydrogen plasmas with electron densities ne ~ 1016 m-3 and electron temperatures Te ~ 3 eV. The plasmas are created by an inductively coupled RF (13.56 MHz) discharge of 500 W at the total pressure of 10 mTorr in the nitrogen partial pressure ranging from 0.02 to 2.9 mTorr. The ion density fractions are measured by an electrostatic quadrupole plasma analyzer, which is a combination of ion energy analyzer and mass spectrometer, after calibration with neutral gases. A zero-dimensional rate equation model, sometimes called a global model, is used to understand the source and loss processes of each ion and neutral species in the plasma. The ion density fractions calculated by the model show qualitatively good agreement with the experimental results. Model calculations suggest that ND3+ and ND4+ generation is dominated by electron or D+ exchange reactions of deuterium atomic/molecular ions with ND3. These processes are thought to play an important role in the recombination process of D plasma with ammonia formed in the N2 seeded divertor region.

Authors:
 [1];  [1]; ORCiD logo [1]
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  1. Univ. of California, San Diego, CA (United States)
Publication Date:
Research Org.:
Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1540223
Grant/Contract Number:  
FG02-07ER54912
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 7; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Abe, S., Doerner, R. P., and Tynan, G. R. Neutralization processes of atomic/molecular deuterium ions assisted by ND3 in low density D2-N2 plasmas. United States: N. p., 2018. Web. doi:10.1063/1.5037602.
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Abe, S., Doerner, R. P., & Tynan, G. R. Neutralization processes of atomic/molecular deuterium ions assisted by ND3 in low density D2-N2 plasmas. United States. doi:https://doi.org/10.1063/1.5037602
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Abe, S., Doerner, R. P., and Tynan, G. R. Wed . "Neutralization processes of atomic/molecular deuterium ions assisted by ND3 in low density D2-N2 plasmas". United States. doi:https://doi.org/10.1063/1.5037602. https://www.osti.gov/servlets/purl/1540223.
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@article{osti_1540223,
title = {Neutralization processes of atomic/molecular deuterium ions assisted by ND3 in low density D2-N2 plasmas},
author = {Abe, S. and Doerner, R. P. and Tynan, G. R.},
abstractNote = {The formation mechanisms of ND3+ and ND4+ are investigated in weakly ionized nitrogen-hydrogen plasmas with electron densities ne ~ 1016 m-3 and electron temperatures Te ~ 3 eV. The plasmas are created by an inductively coupled RF (13.56 MHz) discharge of 500 W at the total pressure of 10 mTorr in the nitrogen partial pressure ranging from 0.02 to 2.9 mTorr. The ion density fractions are measured by an electrostatic quadrupole plasma analyzer, which is a combination of ion energy analyzer and mass spectrometer, after calibration with neutral gases. A zero-dimensional rate equation model, sometimes called a global model, is used to understand the source and loss processes of each ion and neutral species in the plasma. The ion density fractions calculated by the model show qualitatively good agreement with the experimental results. Model calculations suggest that ND3+ and ND4+ generation is dominated by electron or D+ exchange reactions of deuterium atomic/molecular ions with ND3. These processes are thought to play an important role in the recombination process of D plasma with ammonia formed in the N2 seeded divertor region.},
doi = {10.1063/1.5037602},
journal = {Physics of Plasmas},
number = 7,
volume = 25,
place = {United States},
year = {2018},
month = {7}
}
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DOI:  https://doi.org/10.1063/1.5037602
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Works referenced in this record:

Laser Thomson scattering system applicable to low-temperature plasma in the divertor simulator MAP-II
journal, November 2005

  • Okamoto, A.; Kado, S.; Kajita, S.
  • Review of Scientific Instruments, Vol. 76, Issue 11
  • DOI: 10.1063/1.2135281

Radiative characteristics of 3p Σ, Π; 3d Π−, Δ− states of H2 and determination of gas temperature of low pressure hydrogen containing plasmas
journal, November 1996

  • Astashkevich, S. A.; Käning, M.; Käning, E.
  • Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 56, Issue 5
  • DOI: 10.1016/S0022-4073(96)00103-3

Divertor plasma detachment
journal, May 2016

  • Krasheninnikov, S. I.; Kukushkin, A. S.; Pshenov, A. A.
  • Physics of Plasmas, Vol. 23, Issue 5
  • DOI: 10.1063/1.4948273

Experimental investigations on hydrocarbon-enhanced MAR processes in low temperature plasma in divertor simulator MAP-II
journal, March 2003

Characterization of an azimuthally symmetric helicon wave high density plasma source
journal, November 1997

  • Tynan, G. R.; Bailey, A. D.; Campbell, G. A.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 15, Issue 6
  • DOI: 10.1116/1.580844

Low pressure hydrogen discharges diluted with argon explored using a global model
journal, November 2010

  • Hjartarson, A. T.; Thorsteinsson, E. G.; Gudmundsson, J. T.
  • Plasma Sources Science and Technology, Vol. 19, Issue 6
  • DOI: 10.1088/0963-0252/19/6/065008

Radiative and three-body recombination in the Alcator C-Mod divertor
journal, July 1997

  • Lumma, D.; Terry, J. L.; Lipschultz, B.
  • Physics of Plasmas, Vol. 4, Issue 7
  • DOI: 10.1063/1.872234

Evidence for molecular-assisted recombination of He+ from particle balance measurements in helium-hydrogen mixture plasmas in PISCES-A
journal, October 2008

  • Cai, Laizhong; Tynan, George R.; Hollmann, Eric M.
  • Physics of Plasmas, Vol. 15, Issue 10
  • DOI: 10.1063/1.2991396

Rotational and gas temperatures of molecular deuterium in a hollow cathode glow discharge
journal, December 2015

  • Majstorović, G. Lj.; Šišović, N. M.
  • Journal of Research in Physics, Vol. 38-39, Issue 1
  • DOI: 10.1515/jrp-2015-0002

Volume recombination in divertor I of ASDEX Upgrade
journal, July 1999

Surface effects on the diagnostic of carbon/nitrogen low-pressure plasmas studied by differentially pumped mass spectrometry: Surface effects on mass spectrometry of C/N plasma
journal, April 2014

  • Alegre, Daniel; Ferreira, Jose A.; Tabarés, Francisco L.
  • Journal of Mass Spectrometry, Vol. 49, Issue 5
  • DOI: 10.1002/jms.3346

Behaviors of Absolute Densities of N, H, and NH 3 at Remote Region of High-Density Radical Source Employing N 2 –H 2 Mixture Plasmas
journal, January 2011

  • Chen, Shang; Kondo, Hiroki; Ishikawa, Kenji
  • Japanese Journal of Applied Physics, Vol. 50, Issue 1S1
  • DOI: 10.7567/JJAP.50.01AE03

Dissociative recombination cross sections for N H 4 + ions and electrons
journal, April 1978

On the transmission function of an ion-energy and mass spectrometer
journal, January 1998

  • Hamers, E. A. G.; van Sark, W. G. J. H. M.; Bezemer, J.
  • International Journal of Mass Spectrometry and Ion Processes, Vol. 173, Issue 1-2
  • DOI: 10.1016/S0168-1176(97)00285-1

Neutral depletion and transport mechanisms in large-area high density plasma sources
journal, November 1999

  • Tynan, G. R.
  • Journal of Applied Physics, Vol. 86, Issue 10
  • DOI: 10.1063/1.371532

Experimental Evidence of Molecular Activated Recombination in Detached Recombining Plasmas
journal, July 1998

Rotational and translational temperature equilibrium in an inductively coupled plasma
journal, September 2006

  • Shimada, Masashi; Tynan, George R.; Cattolica, Robert
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 24, Issue 5
  • DOI: 10.1116/1.2244539

Neutral and ion chemistry in low pressure dc plasmas of H2/N2 mixtures: routes for the efficient production of NH3 and NH4+
journal, January 2011

  • Carrasco, Esther; Jiménez-Redondo, Miguel; Tanarro, Isabel
  • Physical Chemistry Chemical Physics, Vol. 13, Issue 43
  • DOI: 10.1039/c1cp22284h

A simple formula for diffusion calculations involving wall reflection and low density
journal, August 1987

  • Chantry, P. J.
  • Journal of Applied Physics, Vol. 62, Issue 4
  • DOI: 10.1063/1.339662

CRESU studies of ion/molecule reactions
journal, December 1987

Absolute partial cross sections for electron-impact ionization of H 2 , N 2 , and O 2 from threshold to 1000 eV
journal, September 1996

Catalytic mechanism of divertor plasma recombination provided by hydrocarbon impurities
journal, November 2000

  • Janev, R. K.; Kato, T.; Wang, J. G.
  • Physics of Plasmas, Vol. 7, Issue 11
  • DOI: 10.1063/1.1316082

Contribution of molecular activated recombination to hydrogen plasma detachment in the divertor plasma simulator NAGDIS-II
journal, March 1999

Kinetics of ammonia decomposition on polycrystalline tungsten
journal, March 1983

Theory of Electron Collision Experiments at Intermediate and High Gas Densities
journal, December 1966

On the reaction of protons with methane, ammonia, water and oxygen
journal, November 1974

Plasma recombination and divertor detachment
journal, May 1996

Ion chemistry in H 2 -Ar low temperature plasmas
journal, August 2013

  • Sode, M.; Schwarz-Selinger, T.; Jacob, W.
  • Journal of Applied Physics, Vol. 114, Issue 6
  • DOI: 10.1063/1.4817526

Quantitative determination of mass-resolved ion densities in H 2 -Ar inductively coupled radio frequency plasmas
journal, March 2013

  • Sode, M.; Schwarz-Selinger, T.; Jacob, W.
  • Journal of Applied Physics, Vol. 113, Issue 9
  • DOI: 10.1063/1.4794165

Oxygen and fluorine atom kinetics in electron cyclotron resonance plasmas by time‐resolved actinometry
journal, July 1991

  • Booth, J. P.; Sadeghi, N.
  • Journal of Applied Physics, Vol. 70, Issue 2
  • DOI: 10.1063/1.349662

Formation of ammonia during nitrogen-seeded discharges at ASDEX Upgrade
journal, June 2012

Study of recombining gas targets
journal, February 1997

Measurement and modeling of neutral, radical, and ion densities in H 2 -N 2 -Ar plasmas
journal, February 2015

  • Sode, M.; Jacob, W.; Schwarz-Selinger, T.
  • Journal of Applied Physics, Vol. 117, Issue 8
  • DOI: 10.1063/1.4913623

Ion cyclotron resonance studies on the reaction of H 2 + and D 2 + ions with various simple molecules and hydrocarbons
journal, April 1975

  • Kim, J. K.; Huntress, W. T.
  • The Journal of Chemical Physics, Vol. 62, Issue 7
  • DOI: 10.1063/1.430817

Wall loss of atomic nitrogen determined by ionization threshold mass spectrometry
journal, November 2014

  • Sode, M.; Schwarz-Selinger, T.; Jacob, W.
  • Journal of Applied Physics, Vol. 116, Issue 19
  • DOI: 10.1063/1.4902063

Overview on plasma operation with a full tungsten wall in ASDEX Upgrade
journal, July 2013

Ammonia formation in N2/H2 plasmas on ITER-relevant plasma facing materials: Surface temperature and N2 plasma content effects
journal, August 2015

Interpretation of ion distribution functions measured by a combined energy and mass analyzer
journal, January 2003

Experiments and global model of inductively coupled rf Ar/N2 discharges
journal, August 2010

  • Kimura, Takashi; Kasugai, Hiroki
  • Journal of Applied Physics, Vol. 108, Issue 3
  • DOI: 10.1063/1.3468603

The dissociative recombination of molecular ions
journal, February 1990

First nitrogen-seeding experiments in JET with the ITER-like Wall
journal, July 2013

Gas analyses of the first complete JET cryopump regeneration with ITER-like wall
journal, April 2014

Measurement and modeling of molecular ion concentrations in a hydrogen reflex-arc discharge
journal, October 2002

  • Hollmann, E. M.; Pigarov, A. Yu.
  • Physics of Plasmas, Vol. 9, Issue 10
  • DOI: 10.1063/1.1503070

Plasma detachment from divertor targets and limiters
journal, April 1995

Gas Rotational Temperature in an RF Plasma
journal, January 1979

  • Porter, R. A.
  • Journal of The Electrochemical Society, Vol. 126, Issue 3
  • DOI: 10.1149/1.2129062

Recombination coefficients of O and N radicals on stainless steel
journal, September 2000

  • Singh, Harmeet; Coburn, J. W.; Graves, David B.
  • Journal of Applied Physics, Vol. 88, Issue 6
  • DOI: 10.1063/1.1289046

Evaluated Bimolecular Ion‐Molecule Gas Phase Kinetics of Positive Ions for Use in Modeling Planetary Atmospheres, Cometary Comae, and Interstellar Clouds
journal, November 1993

  • Anicich, Vincent G.
  • Journal of Physical and Chemical Reference Data, Vol. 22, Issue 6
  • DOI: 10.1063/1.555940

Role of molecular effects in divertor plasma recombination
journal, August 2017

  • Kukushkin, A. S.; Krasheninnikov, S. I.; Pshenov, A. A.
  • Nuclear Materials and Energy, Vol. 12
  • DOI: 10.1016/j.nme.2016.12.030

Plasma recombination and molecular effects in tokamak divertors and divertor simulators
journal, May 1997

  • Krasheninnikov, S. I.; Pigarov, A. Yu.; Knoll, D. A.
  • Physics of Plasmas, Vol. 4, Issue 5
  • DOI: 10.1063/1.872268

Study of the Interaction of Ammonia with Tungsten Surfaces by Thermal Desorption Spectrometry
journal, February 1971

  • Peng, Y. K.; Dawson, P. T.
  • The Journal of Chemical Physics, Vol. 54, Issue 3
  • DOI: 10.1063/1.1675025

Contribution of hydrogen molecular assisted recombination processes to population of hydrogen atom in divertor simulator MAP-II
journal, June 2007

Catalytic decomposition of ammonia on tungsten (100), (110), and (111) crystal faces
journal, July 1973

  • McAllister, Jerome; Hansen, Robert S.
  • The Journal of Chemical Physics, Vol. 59, Issue 1
  • DOI: 10.1063/1.1679821

Absolute cross sections for electron-impact ionization of the rare-gas atoms by the fast-neutral-beam method
journal, January 1987

  • Wetzel, Robert C.; Baiocchi, Frank A.; Hayes, Todd R.
  • Physical Review A, Vol. 35, Issue 2
  • DOI: 10.1103/PhysRevA.35.559

Measurement of radial neutral pressure and plasma density profiles in various plasma conditions in large-area high-density plasma sources
journal, August 2000

  • Yun, Seokmin; Taylor, Kurt; Tynan, George R.
  • Physics of Plasmas, Vol. 7, Issue 8
  • DOI: 10.1063/1.874209
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    Works referencing / citing this record:

    Dissociative recombination process of ammonium for HN-MAR in high density D-N plasmas
    journal, December 2018

    • Abe, S.; Chakraborty Thakur, S.; Doerner, R. P.
    • Physics of Plasmas, Vol. 25, Issue 12
    • DOI: 10.1063/1.5056204
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