Two-photon laser-induced fluorescence measurements were performed on the helicity injected torus (HIT-SI3) device to determine the density and temperature of the background neutral deuterium population. Measurements were taken in 2 ms long pulsed plasmas after the inductive helicity injectors were turned off. Attempts to measure neutrals during the main phase of the plasma were unsuccessful, likely due to the density of neutrals being below the detection threshold of the diagnostic. An unexpectedly low density of atomic deuterium was measured in the afterglow; roughly 100 times lower than the theoretical prediction of 1017 m−3. The neutral temperatures measured were on the order of 1 eV. Temporally and spatially resolved neutral density and temperature data are presented.
Skip Nav Destination
Article navigation
November 2016
Research Article|
July 20 2016
Two-photon LIF on the HIT-SI3 experiment: Absolute density and temperature measurements of deuterium neutrals
Drew Elliott;
Drew Elliott
a)
1Department of Physics and Astronomy,
West Virginia University
, Morgantown, West Virginia 26056, USA
Search for other works by this author on:
Derek Sutherland
;
Derek Sutherland
2Department of Aerospace Engineering,
University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Umair Siddiqui
;
Umair Siddiqui
1Department of Physics and Astronomy,
West Virginia University
, Morgantown, West Virginia 26056, USA
Search for other works by this author on:
Earl Scime
;
Earl Scime
1Department of Physics and Astronomy,
West Virginia University
, Morgantown, West Virginia 26056, USA
Search for other works by this author on:
Chris Everson;
Chris Everson
2Department of Aerospace Engineering,
University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Kyle Morgan;
Kyle Morgan
2Department of Aerospace Engineering,
University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Aaron Hossack
;
Aaron Hossack
2Department of Aerospace Engineering,
University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Brian Nelson;
Brian Nelson
2Department of Aerospace Engineering,
University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Tom Jarboe
Tom Jarboe
2Department of Aerospace Engineering,
University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
a)
Author to whom correspondence should be addressed. Electronic mail: dbelliott@mix.wvu.edu.
Contributed paper, published as part of the Proceedings of the 21st Topical Conference on High-Temperature Plasma Diagnostics, Madison, Wisconsin, USA, June 2016.
Rev. Sci. Instrum. 87, 11E506 (2016)
Article history
Received:
May 31 2016
Accepted:
June 20 2016
Citation
Drew Elliott, Derek Sutherland, Umair Siddiqui, Earl Scime, Chris Everson, Kyle Morgan, Aaron Hossack, Brian Nelson, Tom Jarboe; Two-photon LIF on the HIT-SI3 experiment: Absolute density and temperature measurements of deuterium neutrals. Rev. Sci. Instrum. 1 November 2016; 87 (11): 11E506. https://doi.org/10.1063/1.4955494
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Could not validate captcha. Please try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00
Citing articles via
Related Content
Validation of extended magnetohydrodynamic simulations of the HIT-SI3 experiment using the NIMROD code
Phys. Plasmas (December 2017)
Effect of injected flux and current temporal phasing on self-organization in the HIT-SI3 experiment
Phys. Plasmas (May 2022)
Improvements to the ion Doppler spectrometer diagnostic on the HIT-SI experiments
Rev. Sci. Instrum. (March 2018)
The electronic spectrum of Si3 I: Triplet D3h system
J. Chem. Phys. (May 2012)
The calculated electronic excitation spectra of Si2C and Si3
J. Chem. Phys. (January 1986)