TY - JOUR
T1 - Determination of rank 4 multipoles and of the partial cross sections for He(31D) excitation by electron impact
AU - Mikosza, A. G.
AU - Hippler, R.
AU - Wang, J. B.
AU - Williams, J. F.
PY - 1993
Y1 - 1993
N2 - We report the first measurements of a rank 4 state multipole for He(31D) excitation by electron impact with a polarized photon-photon coincidence technique. Our results allow, for the first time, the extraction of partial cross sections σm for He(31Dm) excitation (m=0, ±1, ±2) which are not otherwise available. The present results put stringent tests on existing theories and, for example, point in the theoretical calculations to an overestimation of the partial cross section σ2.
AB - We report the first measurements of a rank 4 state multipole for He(31D) excitation by electron impact with a polarized photon-photon coincidence technique. Our results allow, for the first time, the extraction of partial cross sections σm for He(31Dm) excitation (m=0, ±1, ±2) which are not otherwise available. The present results put stringent tests on existing theories and, for example, point in the theoretical calculations to an overestimation of the partial cross section σ2.
UR - http://www.scopus.com/inward/record.url?scp=0346389803&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.71.235
DO - 10.1103/PhysRevLett.71.235
M3 - Article
C2 - 10054898
AN - SCOPUS:0346389803
SN - 0031-9007
VL - 71
SP - 235
EP - 238
JO - Physical Review Letters
JF - Physical Review Letters
IS - 2
ER -