Accession Number : AD0644511

Title :   THE DIPOLE SPECTRUM AND PROPERTIES OF HELIUM.

Descriptive Note : Scientific rept. no. 9, 1 Aug 64-31 Jul 66,

Corporate Author : QUEEN'S UNIV BELFAST (NORTHERN IRELAND) DEPT OF APPLIED MATHEMATICS

Personal Author(s) : Chan,Y. M. ; Dalgarno,A.

Report Date : 31 JUL 1965

Pagination or Media Count : 17

Abstract : Analytical representations of the dipole spectrum of the ground state of helium are derived. From them are calculated the Verdet constant, the mean excitation energies I and I sub 1 characterising stopping and straggling of a beam of fast particles absorbed in helium and the leading coefficient C(a,b)/(R exp. +6) of the long range interaction between atoms a and b a distance R apart. I is 42.0 eV, I is 73 eV, C(He,He) is 1.471 a.u. and C(He,H) is 2.830 a.u. (Author)

Descriptors :   (*HELIUM, ATOMIC PROPERTIES), DIPOLE MOMENTS, GROUND STATE, EXCITATION, ATOMIC ENERGY LEVELS, INTERACTIONS, MAGNETIC FIELDS, POLARIZATION, PARTICLE BEAMS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE