Accession Number : AD0601668

Title :   ION DISSOCIATION IN THE DRIFT TUBE OF A TIME-OFFLIGHT MASS SPECTROMETER: V. ANALYTIC SOLUTIONS OF THE FLIGHT-TIME SHIFT EQUATION,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Hunt,W. W. ,Jr. ; Kennedy,M. J.

Report Date : FEB 1964

Pagination or Media Count : 11

Abstract : Applying screened trapezoidal potential barriers in the drift tube of a time-of-flight mass spectrometer produces flighttime shifts that can be used to separate and identify products of ion dissociation processes occurring between the ion source and the potential barrier. The flight-time shift is a function of the retarder voltage and mass-to-charge ratios of the fragment and parent ions, expressed by the flight-time shift equation. When the retarder voltage is known, analytic solu tions of this equation allow the retarded ions (fragment or parent) to be identified from the measured flight-time shifts. When the mass-to-charge ratios of these ions are known, similar solutions allow the retarder voltage that will produce a given flight-time shift to be predicted. For part IV see AD-429 438. (Author)

Descriptors :   (*MASS SPECTROSCOPY, EQUATIONS), SPECTRUM ANALYZERS, IONS, DISSOCIATION, ANALYSIS, VOLTAGE

Distribution Statement : APPROVED FOR PUBLIC RELEASE