Accession Number:

ADA297828

Title:

The Crystal Structure of Gamma Plutonium,

Descriptive Note:

Corporate Author:

LOS ALAMOS SCIENTIFIC LAB ALBUQUERQUE NM

Personal Author(s):

Report Date:

1951-09-01

Pagination or Media Count:

11.0

Abstract:

The crystal structure is known for only two of the five allotropic forms of plutonium metal. The delta modification is cubic face-centered with a 4.63 A at 350 deg C, and the epsilon form is cubic body-centered with a 3.63 A at 5l0 deg C. Satisfactory X-ray diffraction patterns of the alpha, beta and gamma forms of plutonium have been available for several years. However, the indexing of these powder patterns has proved to be a very difficult task. The indexing of the pattern of gamma plutonium given in this report succeeded only after a great many hours of intensive work. The patterns of alpha and beta plutonium have not yet been interpreted. Table 1 gives the observed intensities and sine squares as obtained from a powder diffraction pattern of gamma plutonium taken with CuK alpha-radiation at 226 deg C. The alpha sub 1 alpha sub 2 - doublet is separated for sine squared theta 0.400, and the measurements refer to the stronger component. jg p.5

Subject Categories:

  • Inorganic Chemistry
  • Radiation and Nuclear Chemistry
  • Crystallography
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE