Abstract
The mega-ampere currents associated with light ion fusion (LIF) require excellent charge neutralization to prevent divergence growth. As the size and space-charge potential of a beam clump or `beamlet` become small (submillimeter size and kilovolt potentials), the neutralization becomes increasingly difficult. Linear theory predicts that plasma electrons cannot neutralize potentials < {phi}{sub crit} = (1/2)m{sub e}v{sub i}{sup 2}/e, where m{sub e} is the electron mass and v{sub i} is the ion beam velocity. A non-uniform beam would, therefore, have regions with potentials sufficient to add divergence to beam clumps. The neutralization of small beamlets produced on the SABLE accelerator and in numerical simulation has supported the theory, showing a plateau in divergence growths as the potential in the beamlet exceeds {phi}{sub crit}. (author). 1 tab., 2 figs., 4 refs.
Welch, D R;
[1]
Olson, C L;
Hanson, D L
[2]
- Mission Research Corp., Albuquerque, NM (United States)
- Sandia National Labs., Albuquerque, NM (United States)
Citation Formats
Welch, D R, Olson, C L, and Hanson, D L.
Charge neutralization of small ion beam clumps.
Czech Republic: N. p.,
1996.
Web.
Welch, D R, Olson, C L, & Hanson, D L.
Charge neutralization of small ion beam clumps.
Czech Republic.
Welch, D R, Olson, C L, and Hanson, D L.
1996.
"Charge neutralization of small ion beam clumps."
Czech Republic.
@misc{etde_511318,
title = {Charge neutralization of small ion beam clumps}
author = {Welch, D R, Olson, C L, and Hanson, D L}
abstractNote = {The mega-ampere currents associated with light ion fusion (LIF) require excellent charge neutralization to prevent divergence growth. As the size and space-charge potential of a beam clump or `beamlet` become small (submillimeter size and kilovolt potentials), the neutralization becomes increasingly difficult. Linear theory predicts that plasma electrons cannot neutralize potentials < {phi}{sub crit} = (1/2)m{sub e}v{sub i}{sup 2}/e, where m{sub e} is the electron mass and v{sub i} is the ion beam velocity. A non-uniform beam would, therefore, have regions with potentials sufficient to add divergence to beam clumps. The neutralization of small beamlets produced on the SABLE accelerator and in numerical simulation has supported the theory, showing a plateau in divergence growths as the potential in the beamlet exceeds {phi}{sub crit}. (author). 1 tab., 2 figs., 4 refs.}
place = {Czech Republic}
year = {1996}
month = {Dec}
}
title = {Charge neutralization of small ion beam clumps}
author = {Welch, D R, Olson, C L, and Hanson, D L}
abstractNote = {The mega-ampere currents associated with light ion fusion (LIF) require excellent charge neutralization to prevent divergence growth. As the size and space-charge potential of a beam clump or `beamlet` become small (submillimeter size and kilovolt potentials), the neutralization becomes increasingly difficult. Linear theory predicts that plasma electrons cannot neutralize potentials < {phi}{sub crit} = (1/2)m{sub e}v{sub i}{sup 2}/e, where m{sub e} is the electron mass and v{sub i} is the ion beam velocity. A non-uniform beam would, therefore, have regions with potentials sufficient to add divergence to beam clumps. The neutralization of small beamlets produced on the SABLE accelerator and in numerical simulation has supported the theory, showing a plateau in divergence growths as the potential in the beamlet exceeds {phi}{sub crit}. (author). 1 tab., 2 figs., 4 refs.}
place = {Czech Republic}
year = {1996}
month = {Dec}
}