Procedure for recording ion-cyclotron-resonance spectra and appa

Details Procedure for recording ion-cyclotron-resonance spectra and appa Procedure for recording ion-cyclotron-resonance spectra and appa

1984-08-28

1986-01-07

Smith, Alfred E.

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

250288, G01N 2414

Patent

active

045635790

ABSTRACT:
In a procedure for recording ion-cyclotron resonance spectra or an apparatus for carrying out the procedure, gaseous ions of a sample substance in an ultrahigh vacuum are simultaneously exposed to a constant magnetic field B.sub.O and to a high frequency field which is perpendicular to it, with resonances being excited when the frequency of the alternating field corresponds to the rotational frequency of the ions which move on circular paths in the constant magnetic field. To produce gaseous ions of the sample substance, the latter is bombarded with additional gaseous, high-energy ions of a primary substance. The primary ions are produced in the measuring cell by means of an electron beam and excited to a high energy level by means of ion-cyclotron resonance (FIG. 2).

REFERENCES:
patent: 3502867 (1970-03-01), Beauchamp
patent: 3535512 (1970-10-01), Baldeschwieler
Applied Physics, p. 35, 1976-"Secondary-Ion Emission of Amino Acids".

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