Ion guiding in curved glass capillaries

Guiding of 4 MeV C+ and C4+ ion beams using cylindrical glass channel

“…In a phenomenon called the guiding effect, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] energetic ion beams can pass through various insulating capillaries without losing their initial energy and=or charge state. The guiding effect was first discovered by Stolterfoht et al 1) upon transmitting 3 keV Ne 7+ ions through insulating capillary targets.…”

Transport of accelerated electrons through dielectric nanochannels in PET films

“…To describe the observed effect, the authors of work [5] introduced the term "guiding" and explained the guiding effect is due to the deposited charge from the ion impact on the insulating surfaces which prohibit the following ions from close collisions with the capillary walls. The guiding effect was also observed for other types of ions with different energies [6]- [8]. So far, the guiding scenario for the positive ions are widely accepted and clear.…”

Fluence enhancement of a 4 MeV-C4+ ion beam transmitted through a cylindrical glass channel after charging

“…The first involves the guide of low-energy highly charged ions with masses greater than 20 u (neon) and kinetic energies lower than several hundred keVs. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] The other involves the guiding of medium-energy singly or doubly charged ions with masses smaller than 20 u and kinetic energies greater than 1 MeV. [18][19][20][21][22][23][24][25][26][27][28][29][30][31] In the former case, the self-assembly of the positively charged patches formed at the inner surface, due to the interaction with highly charged ions, is generally considered to prevent the succeeding ions from colliding inelastically with the surface.…”