Accession Number : AD0783915

Title :   Research Investigation Directed toward Extending the Useful Range of the Electromagnetic Spectrum.

Descriptive Note : Progress rept. no. 24, 1 Jul 73-30 Jun 74,

Corporate Author : COLUMBIA RADIATION LAB NEW YORK

Personal Author(s) : Hartmann,Sven R. ; Happer,William

Report Date : 30 JUN 1974

Pagination or Media Count : 160

Abstract : The report discusses completed and proposed research in atomic and molecular physics conducted at the Columbia Radiation Laboratory from July 1972 to June 1973. Central topics described include the atomic spectra and electronic structure of alkali metals and helium, molecular microwave spectroscopy, the resonance physics of photon echoes in some solid state systems (including Raman echoes, superradiance, and two photon absorption), and liquid helium superfluidity.

Descriptors :   *Alkali metals, *Atomic spectra, *Helium, *Superfluidity, Molecular spectroscopy, Optical pumping, Excitation, Electron transitions, Atomic energy levels, Hyperfine structure, Neodymium, Ruby, Cryogenics, Spectrum analysis, Liquid helium, Solid state physics, Scientific research, Reports, Electronic states, Nitrogen heterocyclic compounds

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Solid State Physics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE