Accession Number:

AD0631387

Title:

SEMIANNUAL REPORT, OCTOBER 1, 1965-MARCH 31, 1966.

Descriptive Note:

Status rept.,

Corporate Author:

DUKE UNIV DURHAM N C DEPT OF PHYSICS

Personal Author(s):

Report Date:

1966-03-31

Pagination or Media Count:

4.0

Abstract:

NUCLEAR RESONANCE IN SOLID H2 and D2. Measurements on derivatives of the line shape and on longitudinal relaxation time were carried out on solid H2 for several ortho concentrations as a function of temperature. A new interpretation was made of the relaxation mechanism in solid H2 the interpretation was based on electric quadrupole-quadrupole interaction. SPECIFIC HEAT OF RARE EARTH GARNETS Measurements between 0.4 and 4.0 degrees K on a superpure yttrium, iron, garnet YIG sample show that the specific heat cannot be analyzed at low enough temperatures in terms of a T 32 spin wave contribution corrected for anisotropy and dipolar coupling and the T 3 lattice contribution. NUCLEAR RESONANCE OF FE-57 IN RARE EARTH GARNETS The 57-Fe gyromagnetic ratio in YIG was measured with a precision comparable to that obtained by Endor measurements. Spinwave expressions for magnetization in YIG in an external magnetic field were tested at 63 and 77 degrees K.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE