Dynamics of stored ions in an electrostatic ion beam trap

The decay of ion bunches in the self-bunching mode

“…We expect that for η E >0, the maximum bucket height E max is reduced by the ion bunch space charge, whereas for η E <0, the maximum bucket height is increased. This agrees with existing EIBT observations demonstrating that bunches are not stable when η E >0, but stable without the application of RF voltage when η E <0 [15,22,23,28]. The ion bunch space charge in the self-bunching mode defines the non-zero bucket height needed for bunch stability.…”

“…The self-bunching trapping mode in EIBTs has been studied in depth both experimentally [15,22,23,28,29] and theoretically [26][27][28][29][30][31][32] by measuring, for example, the bunch dispersion rate or simulating the shape of the bunch throughout its movement inside an EIBT. This self-bunching effect, while relatively new to the ion-trapping field of physics, was first introduced as the negative mass instability in 1959 for relativistic circular accelerators and storage rings [33].…”

“…Since some EIBT papers on self-bunching [24,27,28] have defined the slip factor η T as a function of momentum and oscillation period, it is useful to note the conversion factor. Combining f = 1/T and E 0 = p 2 0 /2m where f / f 0 = − T /T 0 and E/E 0 = 2 p 0 / p 0 , the slip factor η E can be expressed with this change of variables as…”

Multi‐ion quantitative mass spectrometry by orthogonal projection method with periodic signal of electrostatic ion beam trap

“…Electrostatic ion beam trap (EIBT) has been invented and developed during the last decade, which stores and manipulates ions with only electrostatic fields 1–4. When a group of ions are injected into EIBT, they would be trapped and oscillate between the two parallel sets of electrode mirrors with applied voltages, whose working principle is similar to that of an optical resonator, and accordingly endows EIBT with another name of ion‐trap resonator 5–7.…”

Passive Electrostatic Recycling Spectrometer of Desk-Top Size for Charged Particles of Low Kinetic Energy

“…These devices typically have circumferences of 7-35 m, operating energies of 20-50 keV with vacuum base pressures of 10 ÿ11 -10 ÿ13 Torr. They are complimented by the compact ''fast'' ion trap developed by Zajfman and co-workers [11,12]. The ERS has features analogous to both electrostatic ion storage rings and Zajfman's linear ion beam ''resonator.''…”