Accession Number:

AD0713632

Title:

EVALUATION OF MOLECULAR WEIGHT FROM EQUILIBRIUM SEDIMENTATION. PART IV: APPLICATION OF TIKHONOV'S REGULARIZING FUNCTIONS

Descriptive Note:

Summary rept. Jan 1969-Feb 1970

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Report Date:

1970-08-01

Pagination or Media Count:

46.0

Abstract:

Determination of a molecular weight distribution MWD from equilibrium sedimentation was investigated. Such a determination requires a solution of the Fujita equations, which proved to be a mathematically Improperly Posed Problem in Hadamard sense. To avoid these difficulties an approximate computational technique was applied which is based on variational calculus widened to include Tikhonovs regularizing functions. It was shown that this is an excellent method for determining a monomodal distribution. Also, the determination of a bi-modal distribution provided satisfactory results. However, a multi-modal distribution fine structure in a MWD requires the application of an additional algorithm.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE