TY - JOUR

T1 - Observation of Cd [Formula Presented] [Formula Presented] autoionizing levels in [Formula Presented] energy spectra

AU - Martin, N. L.S.

AU - Bauman, R. P.

AU - Wilson, M.

PY - 1998

Y1 - 1998

N2 - Cadmium [Formula Presented] energy spectra have been measured for kinematics corresponding to a momentum transfer of 1 a.u. Two previously unknown cadmium autoinizing levels have been observed. Their energies are in excellent agreement with existing ab initio structure calculations of the [Formula Presented] [Formula Presented] levels. One level is easily seen at an ejected-electron direction along the momentum-transfer axis, but is absent for a direction 39° away from this axis. The opposite is true for the other level; it is absent in the former, but present in the latter case. This behavior is in agreement with a calculation that takes into account that the [Formula Presented] levels can autoionize into both singlet and triplet [Formula Presented] continua. The intensity of the new levels, relative to the well-known [Formula Presented] [Formula Presented] levels, agrees well with a plane-wave Born approximation calculation for the [Formula Presented] levels. The third [Formula Presented] [Formula Presented] level is calculated to lie within the broad [Formula Presented] level and cannot be seen in the present experiments.

AB - Cadmium [Formula Presented] energy spectra have been measured for kinematics corresponding to a momentum transfer of 1 a.u. Two previously unknown cadmium autoinizing levels have been observed. Their energies are in excellent agreement with existing ab initio structure calculations of the [Formula Presented] [Formula Presented] levels. One level is easily seen at an ejected-electron direction along the momentum-transfer axis, but is absent for a direction 39° away from this axis. The opposite is true for the other level; it is absent in the former, but present in the latter case. This behavior is in agreement with a calculation that takes into account that the [Formula Presented] levels can autoionize into both singlet and triplet [Formula Presented] continua. The intensity of the new levels, relative to the well-known [Formula Presented] [Formula Presented] levels, agrees well with a plane-wave Born approximation calculation for the [Formula Presented] levels. The third [Formula Presented] [Formula Presented] level is calculated to lie within the broad [Formula Presented] level and cannot be seen in the present experiments.

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U2 - 10.1103/PhysRevA.57.4346

DO - 10.1103/PhysRevA.57.4346

M3 - Article

AN - SCOPUS:0032094676

SN - 1050-2947

VL - 57

SP - 4346

EP - 4350

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

IS - 6

ER -