Absolute high-resolution Se+ photoionization cross-section measurements with Rydberg-series analysis

D. A. Esteves; R. C. Bilodeau; N. C. Sterling; R. A. Phaneuf; A. L.D. Kilcoyne; E. C. Red; A. Aguilar

doi:10.1103/PhysRevA.84.013406

Absolute high-resolution Se⁺ photoionization cross-section measurements with Rydberg-series analysis

D. A. Esteves, R. C. Bilodeau, N. C. Sterling, R. A. Phaneuf, A. L.D. Kilcoyne, E. C. Red, A. Aguilar

Physics and Astronomy

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Abstract

Absolute single photoionization cross-section measurements for Se ⁺ ions were performed at the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory using the photo-ion merged-beams technique. Measurements were made at a photon energy resolution of 5.5 meV from 17.75 to 21.85 eV spanning the 4s24p3 4S3/2o ground-state ionization threshold and the 2P3/2o,2P1/2o,2D5/2o, and2D3/2o metastable state thresholds. Extensive analysis of the complex resonant structure in this region identified numerous Rydberg series of resonances and obtained the Se2⁺ 4s24p2 3P₂ and 4s24p2 1S₀ state energies. In addition, particular attention was given to removing significant effects in the measurements due to a small percentage of higher-order undulator radiation.

Original language	English
Article number	013406
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	84
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevA.84.013406
State	Published - Jul 11 2011

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title = "Absolute high-resolution Se+ photoionization cross-section measurements with Rydberg-series analysis",

abstract = "Absolute single photoionization cross-section measurements for Se + ions were performed at the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory using the photo-ion merged-beams technique. Measurements were made at a photon energy resolution of 5.5 meV from 17.75 to 21.85 eV spanning the 4s24p3 4S3/2o ground-state ionization threshold and the 2P3/2o,2P1/2o,2D5/2o, and2D3/2o metastable state thresholds. Extensive analysis of the complex resonant structure in this region identified numerous Rydberg series of resonances and obtained the Se2+ 4s24p2 3P2 and 4s24p2 1S0 state energies. In addition, particular attention was given to removing significant effects in the measurements due to a small percentage of higher-order undulator radiation.",

author = "Esteves, {D. A.} and Bilodeau, {R. C.} and Sterling, {N. C.} and Phaneuf, {R. A.} and Kilcoyne, {A. L.D.} and Red, {E. C.} and A. Aguilar",

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T1 - Absolute high-resolution Se+ photoionization cross-section measurements with Rydberg-series analysis

AU - Esteves, D. A.

AU - Bilodeau, R. C.

AU - Sterling, N. C.

AU - Phaneuf, R. A.

AU - Kilcoyne, A. L.D.

AU - Red, E. C.

AU - Aguilar, A.

PY - 2011/7/11

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AB - Absolute single photoionization cross-section measurements for Se + ions were performed at the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory using the photo-ion merged-beams technique. Measurements were made at a photon energy resolution of 5.5 meV from 17.75 to 21.85 eV spanning the 4s24p3 4S3/2o ground-state ionization threshold and the 2P3/2o,2P1/2o,2D5/2o, and2D3/2o metastable state thresholds. Extensive analysis of the complex resonant structure in this region identified numerous Rydberg series of resonances and obtained the Se2+ 4s24p2 3P2 and 4s24p2 1S0 state energies. In addition, particular attention was given to removing significant effects in the measurements due to a small percentage of higher-order undulator radiation.

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Absolute high-resolution Se⁺ photoionization cross-section measurements with Rydberg-series analysis

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