Author: Juan C. Moreno
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Impurity Density Calculations from Spectroscopic Measurements of Visible and UV Line Emission on the Alcator C Tokamak
Author: Juan C. Moreno
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Fusion Energy Update
Author:
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 124
Book Description
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 124
Book Description
Impurity Transport Studies on Alcator C-Mod Tokamak Using Charge Exchange Recombination Spectroscopy
Author: Igor Olegovich Bespamyatnov
Publisher:
ISBN:
Category : Charge exchange
Languages : en
Pages : 322
Book Description
A Charge-Exchange Recombination Spectroscopy (CXRS) diagnostic has been installed on Alcator C-Mod to study the transport of light impurities in plasma. The system provides spatially (1 cm) and temporally (12.5 msec) resolved measurements of the impurity density, temperature and flow velocities of the particular impurity. Two optical arrays: poloidal (19 channels) and toroidal (10 channels), collect the light emitted from excited impurity ion populated by charge exchange process from the Diagnostic Neutral Beam (DNB) particle. The attention of this dissertation is focused on the B4 (n = 7 [-->] 6) spectral line emitted by B4 ion formed in the following charge exchange reaction (H0 + B5+ [-->] H+ + B4+*). A complex spectral model was developed to simulate emission. The high magnetic fields of C-Mod result in broad Zeeman patterns which must be taken into account for the interpretation of the line shift and broadening in terms of impurity ion velocity and temperature. After the spectral line fitting and careful identification of the charge exchange component, the calculated Doppler broadening and shifts of the spectral line profile yield information on the ion temperature and rotation. Together with the calculation of the beam density, the absolute calibration of the CXRS optical system provides us with B5+ density measurement capabilities. One of the main objectives of this work was to use the acquired impurity density, temperature and flow velocity profiles to investigate plasma transport behavior and infer the radial electric field E[subscript R] from plasma force balance equation. The focus here was placed on the region of the Internal Transport Barrier (ITB) formation 0.35
Publisher:
ISBN:
Category : Charge exchange
Languages : en
Pages : 322
Book Description
A Charge-Exchange Recombination Spectroscopy (CXRS) diagnostic has been installed on Alcator C-Mod to study the transport of light impurities in plasma. The system provides spatially (1 cm) and temporally (12.5 msec) resolved measurements of the impurity density, temperature and flow velocities of the particular impurity. Two optical arrays: poloidal (19 channels) and toroidal (10 channels), collect the light emitted from excited impurity ion populated by charge exchange process from the Diagnostic Neutral Beam (DNB) particle. The attention of this dissertation is focused on the B4 (n = 7 [-->] 6) spectral line emitted by B4 ion formed in the following charge exchange reaction (H0 + B5+ [-->] H+ + B4+*). A complex spectral model was developed to simulate emission. The high magnetic fields of C-Mod result in broad Zeeman patterns which must be taken into account for the interpretation of the line shift and broadening in terms of impurity ion velocity and temperature. After the spectral line fitting and careful identification of the charge exchange component, the calculated Doppler broadening and shifts of the spectral line profile yield information on the ion temperature and rotation. Together with the calculation of the beam density, the absolute calibration of the CXRS optical system provides us with B5+ density measurement capabilities. One of the main objectives of this work was to use the acquired impurity density, temperature and flow velocity profiles to investigate plasma transport behavior and infer the radial electric field E[subscript R] from plasma force balance equation. The focus here was placed on the region of the Internal Transport Barrier (ITB) formation 0.35
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 548
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 548
Book Description
Physics Briefs
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1422
Book Description
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1422
Book Description
Measurement of Impurity Ion Densities and Energies in the Divertor and Edge Regions of Alcator C-Mod Tokamak. Final Progress Report, March 1994--January 1995
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
The authors are investigating impurity production and transport in the divertor and edge regions of the Alcator C-Mod tokamak through spectroscopic techniques. The emphasis is on the low ionization states found in the edge and divertor regions which are indicative of the physical processes related to impurity generation and particle and energy transport in this region. The authors are using a high-resolution visible/ultraviolet spectrograph capable of measuring the Doppler shifts associated with neutral and ion flows and the Doppler broadening associated with neutral and ion temperatures.
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
The authors are investigating impurity production and transport in the divertor and edge regions of the Alcator C-Mod tokamak through spectroscopic techniques. The emphasis is on the low ionization states found in the edge and divertor regions which are indicative of the physical processes related to impurity generation and particle and energy transport in this region. The authors are using a high-resolution visible/ultraviolet spectrograph capable of measuring the Doppler shifts associated with neutral and ion flows and the Doppler broadening associated with neutral and ion temperatures.
INIS Atomindex
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1308
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1308
Book Description
ERDA Energy Research Abstracts
Author: United States. Energy Research and Development Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 900
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 900
Book Description
Boletín de actualización
Author: Instituto Mexicano del Petróleo. División de Información y Difusión
Publisher:
ISBN:
Category : Petroleum chemicals
Languages : en
Pages : 472
Book Description
Publisher:
ISBN:
Category : Petroleum chemicals
Languages : en
Pages : 472
Book Description
An Experimental Study of Visible and Ultraviolet Impurity Emission from the Alcator C Tokamak
Author: Juan Carlos Moreno
Publisher:
ISBN:
Category :
Languages : en
Pages : 137
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 137
Book Description