Trapping of ions from high energy sources into a radiofrequency ion trap

Simulations of high intensity ion beam RFQ cooler for DESIR/SPIRAL 2: SHIRaC

“…As the ions beams will have an emittance around 80 π.mm.mrad [3], a high resolution separator (HRS) must be implemented in experimental line [4]. Then, This HRS nominal running will require a RFQ cooler [5,6,7].…”

Precise determination of the171Yb+ ground state Hyperfine separation

“…With these additional improvements, the proposed stabilities and accuracies of less than 1 part in 1015 E7] seems realizable in the near future. Apart from the high spectral resolution, it should be noted that the small number of atoms, less than 1014 for the entire experiment, supports the estimates that a minimal flux of about 106 atoms per second is needed to perform a stored ion spectroscopic experiment [14]. This might be of importance for systematic investigations of isotope chains off the region of stability, which are produced at low rates by high energy reactions.…”

Atomic Lifetime Measurements with Ion Traps of Many Sizes

“…Either the trap is kept running while the ions are produced inside the trap volume, or the trap is open during injection of charged particles and then suddenly closed. The ¢rst option usually proceeds by electron-beam bombardment of either a gas or laser-ablated [145] or ohmically produced vapour [56] in order to produce low-charge state ions, or by an energetic ion beam or intense synchrotron radiation to produce slow, highly charged ions [51,52,208]. Any such production from the ambient gas carries the penalty of the ambient gas still being around when it is no longer needed nor wanted, that is when one wants to have clean storage conditions.…”