Difference between revisions of "8-8-18 notes"
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==Presentation edits== | ==Presentation edits== | ||
| − | *Recreate ion production rate (IPR) vs beam energy ( | + | *Recreate ion production rate (IPR) vs beam energy (T_e) graph for large beam energies, include units for IPR. |
| − | *Switch scattering angle definition (small vs. large for the | + | *Switch scattering angle definition (small vs. large for the v_e&v_g comparisons) |
| − | *Change | + | *Change v_i to v_g in 3rd case (should be v_e>>v_g, not v_e>>v_i) |
==Ideas for the future== | ==Ideas for the future== | ||
| Line 8: | Line 8: | ||
*Try renormalizing IPR to beam current (i.e. express rates as ions/(m^3*s*A)) | *Try renormalizing IPR to beam current (i.e. express rates as ions/(m^3*s*A)) | ||
*Thinking about how ideal the residual gas really is -- we're assuming currently that the residual gas is ideal | *Thinking about how ideal the residual gas really is -- we're assuming currently that the residual gas is ideal | ||
| − | *Calculate residual gas speed | + | *Calculate residual gas speed v_g for each gas |
*Research Mott scattering -- relates to polarization | *Research Mott scattering -- relates to polarization | ||
*Consider what happens to the electron leaving the ion (i.e. the electron that is knocked out of the residual gas molecule) -- does it leave the beam? How much energy is transferred to the ion by the electron? Does it depend on temperature, potential energy, etc.? | *Consider what happens to the electron leaving the ion (i.e. the electron that is knocked out of the residual gas molecule) -- does it leave the beam? How much energy is transferred to the ion by the electron? Does it depend on temperature, potential energy, etc.? | ||
Revision as of 10:19, 16 August 2018
Presentation edits
- Recreate ion production rate (IPR) vs beam energy (T_e) graph for large beam energies, include units for IPR.
- Switch scattering angle definition (small vs. large for the v_e&v_g comparisons)
- Change v_i to v_g in 3rd case (should be v_e>>v_g, not v_e>>v_i)
Ideas for the future
- Thinking about distance dependence on IPR -- perhaps convert rates to ions/(m*s) instead of ions/(m^3*s)
- Try renormalizing IPR to beam current (i.e. express rates as ions/(m^3*s*A))
- Thinking about how ideal the residual gas really is -- we're assuming currently that the residual gas is ideal
- Calculate residual gas speed v_g for each gas
- Research Mott scattering -- relates to polarization
- Consider what happens to the electron leaving the ion (i.e. the electron that is knocked out of the residual gas molecule) -- does it leave the beam? How much energy is transferred to the ion by the electron? Does it depend on temperature, potential energy, etc.?
- Research repelling anodes as a 4th option for ion clearing
- Start researching ion trapping/neutralization - starting with beam gaps (as used in e+/e- beams)