Resonant ion

Mass resonant analyzer. A mass analyzer for mass-dependent resonant-energy transfer and measurement of the resonance frequency, power, or ion current of the resonant ions. 

Inductively Coupled Plasma Mass Spectrometry Inductively Coupled Plasma Optical Emission Spectrometry Ion Cyclotron Resonance Ion Diffraction... 

IDSRS) and the complementary resonance ion-dip IR spectroscopy (RID1RS) are useful mass selective techniques for the probing of cluster ground state vibrations. 

Franzen, J. The Non-Linear Ion Trap. Part 5. Nature of Non-Linear Resonances and Resonant Ion Ejection. Int. J. Mass Spectrom. Ion Proc. 1994,130, 15-40. 

Geller, R. Electron Cyclotron Resonance Ion Sources and ECR Plasmas Institute of Physics Publishing Bristol, 1996. 

The Cyclotron , Wiley Sons, NY (1950), 103pp 6) N.D. Fedorov, "Tsiklotron-Tsiklicheskii Rezonansnyi Uskoritel Ionov (Cyclotron-Cyclic Resonance Ion Accelerator),. Atlzdat, Moskva (I960) 88pp 7) OrdTechTerm (1962), 89 8) EncyclBrit-annica 1 (1963) 66 70 (under Accelerators, Particle) 9) Collier s EnCycl 18 (1965), 465 68 (under Particle Accelerator)... 

Figure 1. Fundamentals of ICR excitation. The applied magnetic field direction is perpendicular to the page, and a sinusoidally oscillating radiofrequency electric field is applied to two opposed plates (see upper diagrams). Ions with cyclotron frequency equal to ("resonant" with) that of the applied rf electric field will be excited spirally outward (top right), whereas "off-resonant" ions of other mass-to-charge ratio (and thus other cyclotron frequencies) are excited non-coherently and are left with almost no net displacement after many cycles (top left). After the excitation period (lower diagrams), the final ICR orbital radius is proportional to the amplitude of the rf electric field during the excitation period, to leave ions undetected (A), excited to a detectable orbital radius (B), or ejected (C).

Resonant Ion An ion in the FTMS cell whose cyclotron frequency... 

ZEKE-PES was pioneered by Miiller-Dethlefs, Sander and Schlag18,25. They and others26 recorded the zero kinetic energy photoelectrons produced by absorption of one or more photons to a resonant ion state as a function of pulsed laser excitation wavelength. ZEKE electrons were extracted by an electric field pulse which permitted a delay between the creation and collection of electrons. During this delay, non-ZEKE electrons departed the focal volume, leaving only ZEKE electrons for collection by the extraction pulse. 

A possibility to extend this set comes from the use of an Electron-Cyclotron-Resonance-Ion-Trap (ECRIT), which will be realized using the cyclotron trap itself [22]. Here, hydrogen-like electronic atoms will be produced to obtain narrow calibration lines independent of an accelerator s pion beam. The radiative widths of light elements with Z k. 15 are of the order of a few 10 meV because of the absence of non-radiative inner-shell transitions. 

Freiburg [22] and an electron-cyclotron-resonance ion trap (ECRIT) [23], it may soon be possible to make absolute wavelength measurements of the Lyman-a transitions in hydrogen-like ions, using hat or double hat crystal spectrometers. 

Lattice location. State of immediate surroundings of implant Mbssbauer spectroscopy. Electron-spin resonance, Ion-beam analysis... 

Figure 2 gives an indication of the ion trajectory of a resonant ion in the first 0.01 ms in the omegatron. The flight time of the ion to the detector rg distant from the electron beam is approximately given by... 

Fig. 4. Flight time of resonant ions in the ome-gation mass spectrometer. (After Stuckey ).)...

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