Artial cross sections for excitation of He(3 1D) states by electron impact

A. G. Mikosza; R. Hippler; J. B. Wang; J. F. Williams

Artial cross sections for excitation of He(3 ¹D) states by electron impact

A. G. Mikosza^*, R. Hippler, J. B. Wang, J. F. Williams

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We report absolute measurements at a rank four state multipole for He(3 ¹D) excitation by electron impact with a polarized first-photon-second-photon coincidence technique. The presented technique permits the extraction of total (scattering angle integrated) partial cross sections σ_m for the excitation of He(3 ¹D_m) magnetic substates (m=0,±1,±2). The present results stringently test existing theories and, for example, indicate that most theoretical calculations underestimate the partial cross sections σ₀ and σ₁ and overestimate the σ₂. The recent convergent close-coupling calculations of Fursa and Bray [Phys. Rev. A 52, 1279 (1995)] are in excellent agreement with all our measured data.

Original language	English
Pages (from-to)	3287-3294
Number of pages	8
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	53
Issue number	5
Publication status	Published - May 1996
Externally published	Yes

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title = "Artial cross sections for excitation of He(3 1D) states by electron impact",

abstract = "We report absolute measurements at a rank four state multipole for He(3 1D) excitation by electron impact with a polarized first-photon-second-photon coincidence technique. The presented technique permits the extraction of total (scattering angle integrated) partial cross sections σm for the excitation of He(3 1Dm) magnetic substates (m=0,±1,±2). The present results stringently test existing theories and, for example, indicate that most theoretical calculations underestimate the partial cross sections σ0 and σ1 and overestimate the σ2. The recent convergent close-coupling calculations of Fursa and Bray [Phys. Rev. A 52, 1279 (1995)] are in excellent agreement with all our measured data.",

author = "Mikosza, {A. G.} and R. Hippler and Wang, {J. B.} and Williams, {J. F.}",

year = "1996",

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T1 - Artial cross sections for excitation of He(3 1D) states by electron impact

AU - Mikosza, A. G.

AU - Hippler, R.

AU - Wang, J. B.

AU - Williams, J. F.

PY - 1996/5

Y1 - 1996/5

N2 - We report absolute measurements at a rank four state multipole for He(3 1D) excitation by electron impact with a polarized first-photon-second-photon coincidence technique. The presented technique permits the extraction of total (scattering angle integrated) partial cross sections σm for the excitation of He(3 1Dm) magnetic substates (m=0,±1,±2). The present results stringently test existing theories and, for example, indicate that most theoretical calculations underestimate the partial cross sections σ0 and σ1 and overestimate the σ2. The recent convergent close-coupling calculations of Fursa and Bray [Phys. Rev. A 52, 1279 (1995)] are in excellent agreement with all our measured data.

AB - We report absolute measurements at a rank four state multipole for He(3 1D) excitation by electron impact with a polarized first-photon-second-photon coincidence technique. The presented technique permits the extraction of total (scattering angle integrated) partial cross sections σm for the excitation of He(3 1Dm) magnetic substates (m=0,±1,±2). The present results stringently test existing theories and, for example, indicate that most theoretical calculations underestimate the partial cross sections σ0 and σ1 and overestimate the σ2. The recent convergent close-coupling calculations of Fursa and Bray [Phys. Rev. A 52, 1279 (1995)] are in excellent agreement with all our measured data.

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VL - 53

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JO - Physical Review A: covering atomic, molecular, and optical physics and quantum information

JF - Physical Review A: covering atomic, molecular, and optical physics and quantum information

SN - 2469-9926

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