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An ion trap, used for precision measurements of radium ions, inside a vacuum chamber. View ports surrounding the chamber allow laser light to be directed into the trap. An ion trap is a combination of electric and/or magnetic fields used to capture charged particles — known as ions — often in a system isolated from an external environment.
A TOF mass spectrometer can also have a low-duty cycle when coupled with a continuous ion source. Combining an ion trap with a TOF mass analyzer can improve the duty cycle. Both 3D and linear traps have been combined with TOF mass analyzers. A trap can also add MSn capabilities to the system. [1]
In experimental physics, a quadrupole ion trap or paul trap is a type of ion trap that uses dynamic electric fields to trap charged particles. They are also called radio frequency (RF) traps or Paul traps in honor of Wolfgang Paul , who invented the device [ 1 ] [ 2 ] and shared the Nobel Prize in Physics in 1989 for this work. [ 3 ]
The two Penning traps following the MR-ToF are the preparation Penning trap and the precision Penning trap. [4] The preparation Penning trap, a large cylindrical trap, is placed in the uniform field of a superconducting magnet. [13] [12] The ions are captured and, with high-selectivity, cooled by mass. [14]
For SSIMS the primary requirement is low primary ion flux density which results in extremely low secondary ion yield (10 −3 – 10 −8 atoms/cm³). Hence, there is a need to collect almost all the secondary ions. High transmission (0.5–1) of TOF maximizes the sensitivity (10 4 times that of quadrupole MS). Parallel detection together with ...
A cylindrical version of a Penning trap, with open endcaps to permit axial access. B indicates the magnetic field, and E indicates the electric field used for storage of the particles in the trap centre. A Penning trap is a device for the storage of charged particles using a homogeneous magnetic field and a quadrupole electric field.