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US 2022/0013340 A1Published application
Non-pertubative measurements of low and null magnetic field in high temperature plasmas
AssigneeTae Technologies, Inc.
InventorsDeepak K. Gupta, Richard Ignace, Kenneth H. Nordsieck
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Abstract
Systems and methods that facilitate non-pertubative measurements of low and null magnetic field in high temperature plasmas.
Claims17
A non-perturbative method of measuring radially varying axial magnetic fields in high-temperature plasmas, comprising:
- collecting scattered light signals from illuminated plasma atoms within a Field-Reversed-Configuration (FRC) plasma, wherein the scattered light signals are collected in a viewing direction one of radially or axially to the FRC magnetic field;
- and
- determining the null magnetic field location of an the FRC magnetic field of the FRC plasma from the collected scattered light signals as a function of a linear polarization fraction, pL, of the collected scattered light signals, wherein the linear polarization fraction, pL, of a collected light signal being
- p
- L
- =
- 1
- 1
- +
- 4
-
- H
- 2
- when collected in a viewing direction axial to the FRC magnetic field, or
- p
- L
- =
- 1
- +
- 2
-
- H
- 2
- 1
- +
- 6
-
- H
- 2
- when collected in a viewing direction radial to the FRC magnetic field, wherein where H=ωp/A is the ratio Larmor frequency of bound electron and Einstein's coefficient or radiation rate of the ion.
27 more elements
A system for non-perturbative measuring of radially varying axial magnetic fields in high-temperature field reversed configuration (FRC) plasmas, comprising:
- a first spectro-polarimeter comprising a spectrometer having a fast imaging Charged Coupled Device (CCD) camera;
- wherein the spectrometer is configured to collect scattered light signals from illuminated plasma atoms within a FRC plasma in a viewing direction one of radially or axially to the FRC magnetic field;
- and,
- wherein a null magnetic field location of the FRC magnetic field of the FRC plasma is determinable from the collected scattered light signals as a function of a linear polarization fraction, pL, of the collected scattered light signals, wherein the linear polarization fraction, pL, of a collected light signal being
- p
- L
- =
- 1
- 1
- +
- 4
-
- H
- 2
- when collected in a viewing direction axial to the FRC magnetic field, or
- p
- L
- =
- 1
- +
- 2
-
- H
- 2
- 1
- +
- 6
-
- H
- 2
- when collected in a viewing direction radial to the FRC magnetic field, wherein H=ωp/A is the ratio Larmor frequency of bound electron and Einstein's coefficient or radiation rate of the ion, and
- a plurality of slits each aligned to collect and image scattered light signals from illuminated plasma atoms.
29 more elements
Dependencies are inferred from the claim text.