Investigations on ion injection into a laboratory-built quadrupole/ion trap tandem instrument (Nermag R10-10/ITMS Finnigan) with a 90Γ geometry are described. The quadrupole dual electron impact/chemical ionization (EI/CI) source was used as an external source to prepare ions under EI (or CI) condit
On the relative efficiencies of confinement of Ar+ and Ar2+ ions in a quadrupole ion storage trap (quistor)
β Scribed by J.F.J. Todd; R.M. Waldren; R.E. Mather; G. Lawson
- Publisher
- Elsevier Science
- Year
- 1978
- Weight
- 674 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0020-7381
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
A novel hybrid tandem mass analyzer, coupling a quadrupole ion trap with a quadrupole mass filter, has been constructed to permit mass analysis of ions ejected from the ion trap. The initial application of this instrument is the investigation of the origin of mass shifts in the ion trap due to ion f
The sensitivity of all ion trap mass spectrometry (ITMS) methods is dependent on the trapping efficiency of the instrument. For ITMS instruments utilizing external ion sources, such as laser desorption, trapping efficiency is known to depend on the phase and amplitude of the radio frequency (RF) pot
## Abstract A Fourier transform operating mode is applied to an ion trap. The trap is truncated at 2__r__~0~ and presents unwanted defects that induce confinement electricβfield nonβlinearities. Ion axial secularβmotion spectrum is examined by experiments near the resonance line Ξ²~__z__~ = 0.5. Io