Accession Number:

AD0431132

Title:

A THEORETICAL AND EXPERIMENTAL ANALYSIS OF AN EIGHTEEN STAGE RADIO-FREQUENCY MASS SPECTROMETER,

Descriptive Note:

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES

Personal Author(s):

Report Date:

1962-07-31

Pagination or Media Count:

82.0

Abstract:

An eighteen stage radio-frequency mass spectrometer has been designed and constructed for use in the 2-meter grazing incidence vacuum monochromator existing at USC, and a thorough study regarding its operational characterisitics was made. The values of maximum energy gain G sub m and the tuning frequency f were obtained experimentally. A method has been described for taking into consideration the errors introduced by small variations in the output signal voltage of the radio-frequency oscillator. Simultaneous measurements of resolving power and relative transmission showed that the instrument gave best performance for V sub s V sub i between 0.06 and 0.11. Due to the instability in the output of the radiofrequency oscillator and the weak nature of the ionizing source, light from a hydrogen glow discharge, it was not possible to operate the instrument at values of V sub r higher that 95 of maximum energy gain. The performance of this instrument seems to be better than the three stage Bennet type analyzer used by Herzog and Marmo, with a similar ionization source. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE