Difference between revisions of "8-8-18 notes"
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*Switch scattering angle definition (small vs. large for the v_e&v_g comparisons) | *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) | *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== | ||
*Thinking about distance dependence on IPR -- perhaps convert rates to ions/(m*s) instead of ions/(m^3*s) | *Thinking about distance dependence on IPR -- perhaps convert rates to ions/(m*s) instead of ions/(m^3*s) | ||
Revision as of 10:22, 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)