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,

Descriptive Note:

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s):

• Hunt,W. W. ,Jr.
• Kennedy,M. J.

Report Date:

1964-02-01

Pagination or Media Count:

11.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE