Accession Number : AD0467754

Title :   RESEARCH INVESTIGATION DIRECTED TOWARD EXTENDING THE USEFUL RANGE OF THE ELECTROMAGNETIC SPECTRUM.

Descriptive Note : Quarterly progress rept. no. 2, 16 Mar-15 Jun 65,

Corporate Author : COLUMBIA RADIATION LAB NEW YORK

Personal Author(s) : Novick, R.

Report Date : 15 JUN 1965

Pagination or Media Count : 63

Abstract : Successful observations have been made on the spectra of 6328A light scattered from carbon dioxide near the critical temperature and critical density. A technique has been developed for measuring the two relaxation times characterizing the disorientation of optical aligned atoms in a vapor. The method consists of alternately existing pure dipole for pure quadrupole components of the density matrix which give rise to m=1 zerofield level-crossing signals. A discriminator against m=2 signals simplifies analysis of the data. Measurements of these relaxation times will give considerable information on the coupling of an excited atom to its statistical environment. (Author)

Descriptors :   (*RADIOFREQUENCY SPECTROSCOPY, HELIUM), (*GAS IONIZATION, HELIUM), (*SOLID STATE PHYSICS, SPECTROSCOPY), ELECTRIC FIELDS, LINE SPECTRA, HYPERFINE STRUCTURE, LITHIUM, NITROGEN, RADIOACTIVE ISOTOPES, MOLECULAR BEAMS, MASERS, MICROWAVE SPECTROSCOPY, COLOR CENTERS, SUPERCONDUCTORS, NUCLEAR MAGNETIC RESONANCE, PLATINUM, TUNNELING(ELECTRONICS), LASERS, RUBY, RUBIDIUM, RADIO ASTRONOMY, PLANETARY ATMOSPHERES, POLARIZATION, CARBON DIOXIDE, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, REFRACTION, RELAXATION TIME.

Distribution Statement : APPROVED FOR PUBLIC RELEASE