What question did this study set out to answer?

To measure visible and ultraviolet line emissions in TFR tokamak discharges and evaluate the role of impurities in plasma power balance.

December 1, 1975Nuclear FusionOpen Access

Line radiation in the visible and in the ultraviolet in TFR tokamak plasmas

View Full Paper

Ask AI

Bookmark

Discussion

Member takes

Implication

Spectroscopic analysis reveals substantial radiation losses from edge-confined impurity recycling in tokamak discharges, indicating heavy influence on plasma thermal balance.

Key Points

To measure visible and ultraviolet line emissions in TFR tokamak discharges and evaluate the role of impurities in plasma power balance.
Measured line-of-sight integrated emission across visible and vacuum ultraviolet (100–1300 Å) wavelengths in a 140-kA, 26-kG plasma.
Obtained spatially resolved visible radiation measurements specifically for neutral deuterium.
Quantified initial impurity concentrations during the first 10 ms and modeled subsequent impurity-recycling dynamics using power balance considerations.
Observed line radiation accounted for a major fraction of the total injected Ohmic power, amounting to approximately 30% to 40%.
Impurity-recycling flux remained largely confined to an outer plasma shell, with only a small portion diffusing into the core to explain the effective charge (Z_eff).
Highly ionized molybdenum lines (Mo XXXI and Mo XXXII) originating from the central hot core were detected when electron temperatures exceeded 1.5 keV.

Cite This Study

A 1975 study studied this question.

synapsesocial.com/papers/6a865bcdcdff5daddc73ac01 https://doi.org/10.1088/0029-5515/15/6/011

View Full Paper

Ask AI

Bookmark

December 1, 1975Nuclear FusionOpen Access

Line radiation in the visible and in the ultraviolet in TFR tokamak plasmas

View Full Paper

Ask AI

Bookmark

Discussion

Member takes

Implication

Spectroscopic analysis reveals substantial radiation losses from edge-confined impurity recycling in tokamak discharges, indicating heavy influence on plasma thermal balance.

Key Points

To measure visible and ultraviolet line emissions in TFR tokamak discharges and evaluate the role of impurities in plasma power balance.
Measured line-of-sight integrated emission across visible and vacuum ultraviolet (100–1300 Å) wavelengths in a 140-kA, 26-kG plasma.
Obtained spatially resolved visible radiation measurements specifically for neutral deuterium.
Quantified initial impurity concentrations during the first 10 ms and modeled subsequent impurity-recycling dynamics using power balance considerations.
Observed line radiation accounted for a major fraction of the total injected Ohmic power, amounting to approximately 30% to 40%.
Impurity-recycling flux remained largely confined to an outer plasma shell, with only a small portion diffusing into the core to explain the effective charge (Z_eff).
Highly ionized molybdenum lines (Mo XXXI and Mo XXXII) originating from the central hot core were detected when electron temperatures exceeded 1.5 keV.

Cite This Study

A 1975 study studied this question.

synapsesocial.com/papers/6a865bcdcdff5daddc73ac01 https://doi.org/10.1088/0029-5515/15/6/011

Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

View Full Paper

Ask AI

Bookmark