ADITAAccumulation of ions in a linear radiofrequency trap
Transporting charged particles between different traps has become an important feature in high-precision spectroscopy experiments. A major issue during transport is the heating of the transferred atoms or molecules and the speed of the shuffling process. As a consequence, applied protocols use a cooling mechanism and/or a custom protocol to limit heating and reduce perturbation and loss of the sample. ADITA is an accumulation and a transfer technique for ions, that is faster than the state of the art and that does not require cooling.
HOW IT WORKS
A radio frequency quadrupole ion trap is separated into two parts by a central electrode. An ion cloud is constantly confined within the quadrupole ion trap. Both parts of the trap are asymmetrical, due to their geometry and/or the introduction of a contact potential in one of the two parts of the trap.
The cloud of confined ions detects a variation of electric field when the potential of the central electrode is changed, which causes it to move.
KEY BENEFITS vs. STATE OF THE ART
• can be carried out under ultra-high vacuum conditions and in the absence of buffer-gas cooling, laser cooling or any other cooling mechanism
• pre-industrial prototype
• Microwave atomic clocks
• Mass spectroscopy for detecting traces or exotic ions