Double-focusing mass spectrometer diagram

Fio. 6.53. Schematic diagram of double-focusing mass spectrometer... 

Fig. 2. Schematic diagram of the high-resolution double-focusing mass spectrometer. The insert shows an enlarged view of the ion extraction optics for the high-extraction-efficiency mode. P, pusher electrode C, collision chamber B, electron beam (z direction) S, collision chamber exit slit S2, penetrating field extraction slit S3, grounded slit S4 and Ss, deflector electrodes.

Figure 16.7. Schematic diagrams of the two most commonly used double-focusing mass spectrometers. The Nier-Johnson is really a modified design capable of resolution <7/150,000 because of the cuMed hexapole lenses. From S. Evans and R. Graham, Advan. Mass Spectrom., 6, 429 (1974), by permission of Applied Science Publishers, Ripple Road, Barking, Essex, England.

Describe two methods for ionizing liquid samples for mass spectral analysis. Diagram a transmission quadrupole mass analyzer. What are the advantages and disadvantages of this mass analyzer compared with a double focus mass spectrometer ... 

Schematic diagram of an electric and a magnetic sector as they are arranged in a forward geometry double-focusing mass spectrometer (Nier-Johnson geometry). (Reprinted from Ref. 7 with permission of John V ffley Sons)...

Schematic diagram of a double-focusing mass spectrometer.

Fig. 1. Schematic diagram of a double-focusing Nier-Johnson magnetic sector mass spectrometer where ( " ) represents paths of ions having slightly...

Figure 1 Schematic diagram of a double-focusing field ionization mass spectrometer of conventional geometry (not drawn to scale), showing the four regions in which field ionization kinetic measurements can be made. The stated times refer to an ion source with a blade emitter. Reproduced with permission of Wiley from Nibbering NMM (1984) Mechanistic studies by field ionization kinetics. Mass Spectrometry Reviews Z 445-477.

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