Accession Number : AD0874907

Title :   Proton Relaxation in Ice Crystals and in Frozen Paramagnetic Ionic Solutions.

Descriptive Note : Doctoral thesis,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Kruger, Gottfried Johannes

Report Date : 1961

Pagination or Media Count : 75

Abstract : In the first part of the paper a pulse apparatus for the measurement of nuclear magnetic relaxation times is described. With this apparatus the proton relaxation in single ice crystals was investigated. From the nuclear signal after a 90 deg - pulse the proton-proton separation could be determined as 1.59 plus or minus 0.07 A. The proton resonance line in a single ice crystal is a doublet which is maintained for pure ice up to close to the vicinity of the melting point. For HF doped ice the inner mobility is increased such that the doublet separation vanishes in the vicinity of the melting point. The spin-grating relaxation time of pure and HF doped ice crystals was measured in dependence of the temperature. The nuclear magnetic relaxation times of the protons in frozen solutions of paramagnetic ions were measured as a function of the temperature and the ion concentration. (Author)

Descriptors :   *RELAXATION TIME), (*NUCLEAR MAGNETIC RESONANCE, (*ICE, NUCLEAR MAGNETIC RESONANCE), TEMPERATURE, DOPING, FLUORIDES, DIFFUSION, IONS, WEST GERMANY, THESES.

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE