Accession Number : AD0696075

Title :   POSSIBLE SOURCES OF LARGE ERROR IN DETERMINATIONS OF ION-MOLECULE REACTION RATES WITH DRIFT TUBE-MASS SPECTROMETERS.

Descriptive Note : Technical rept.,

Corporate Author : PURDUE UNIV LAFAYETTE IND PROJECT SQUID HEADQUARTERS

Personal Author(s) : McDaniel,E. W.

Report Date : SEP 1969

Pagination or Media Count : 21

Abstract : Drift tube-mass spectrometers are now used extensively to measure the rate coefficients of ion-molecule reactions. The accuracy which can be obtained in favorable cases is about ten percent, but if careful attention is not paid to a number of factors, very large errors can result. The purpose of this paper is to call attention to this fact, which seems not to be widely known, and to enumerate the factors which can lead to these large errors. (Author)

Descriptors :   (*MASS SPECTROSCOPY, ERRORS), DIFFUSION, ION BOMBARDMENT, MOLECULAR BEAMS, INTERACTIONS

Subject Categories : Test Facilities, Equipment and Methods
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE