Resonance interference and absolute cross sections in near-threshold electron-impact excitation of the 3s 2 1S→3s3p 3P and 3s 2 1S→3s3p 1P transitions in Ar 6+

Y. S. Chung; N. Djurić; B. Wallbank; G. H. Dunn; M. E. Bannister; A. C.H. Smith

Resonance interference and absolute cross sections in near-threshold electron-impact excitation of the 3s ² ¹S→3s3p ³P and 3s ² ¹S→3s3p ¹P transitions in Ar ⁶⁺

Y. S. Chung, N. Djurić, B. Wallbank, G. H. Dunn, M. E. Bannister, A. C.H. Smith

Electrical & Chemical Operations

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

26 Scopus citations

Abstract

Strong resonance features were observed in the near-threshold excitation of Ar ⁶⁺. Absolute total cross sections for electron-impact excitation of the 3s ² ¹S→3s3p ³P ^o and 3s ² ¹S→3s3p ¹P ^o transitions in Ar ⁶⁺ were measured by using the merged electron-ion beams energy loss technique. The results are compared with the R-matrix close-coupling theory (CCR) and the independent-process isolated-resonance distorted-wave approximation. Observed disagreement between CCR theory and experiment at the near-threshold peak for the 3s ² ¹S→3s3p ³P ^o transition is interpreted to be due to very sensitive resonance interference.

Original language	English
Pages (from-to)	2044-2049
Number of pages	6
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	55
Issue number	3
State	Published - 1997

Cite this

@article{132cc0e579464d93b52ae43882c8e3ae,

title = "Resonance interference and absolute cross sections in near-threshold electron-impact excitation of the 3s 2 1S→3s3p 3P and 3s 2 1S→3s3p 1P transitions in Ar 6+ ",

abstract = "Strong resonance features were observed in the near-threshold excitation of Ar 6+. Absolute total cross sections for electron-impact excitation of the 3s 2 1S→3s3p 3P o and 3s 2 1S→3s3p 1P o transitions in Ar 6+ were measured by using the merged electron-ion beams energy loss technique. The results are compared with the R-matrix close-coupling theory (CCR) and the independent-process isolated-resonance distorted-wave approximation. Observed disagreement between CCR theory and experiment at the near-threshold peak for the 3s 2 1S→3s3p 3P o transition is interpreted to be due to very sensitive resonance interference.",

author = "Chung, \{Y. S.\} and N. Djuri{\'c} and B. Wallbank and Dunn, \{G. H.\} and Bannister, \{M. E.\} and Smith, \{A. C.H.\}",

year = "1997",

language = "English",

volume = "55",

pages = "2044--2049",

journal = "Physical Review A - Atomic, Molecular, and Optical Physics",

issn = "1050-2947",

number = "3",

}

Resonance interference and absolute cross sections in near-threshold electron-impact excitation of the 3s ² ¹S→3s3p ³P and 3s ² ¹S→3s3p ¹P transitions in Ar ⁶⁺ . / Chung, Y. S.; Djurić, N.; Wallbank, B. et al.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 55, No. 3, 1997, p. 2044-2049.

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

TY - JOUR

T1 - Resonance interference and absolute cross sections in near-threshold electron-impact excitation of the 3s 2 1S→3s3p 3P and 3s 2 1S→3s3p 1P transitions in Ar 6+

AU - Chung, Y. S.

AU - Djurić, N.

AU - Wallbank, B.

AU - Dunn, G. H.

AU - Bannister, M. E.

AU - Smith, A. C.H.

PY - 1997

Y1 - 1997

N2 - Strong resonance features were observed in the near-threshold excitation of Ar 6+. Absolute total cross sections for electron-impact excitation of the 3s 2 1S→3s3p 3P o and 3s 2 1S→3s3p 1P o transitions in Ar 6+ were measured by using the merged electron-ion beams energy loss technique. The results are compared with the R-matrix close-coupling theory (CCR) and the independent-process isolated-resonance distorted-wave approximation. Observed disagreement between CCR theory and experiment at the near-threshold peak for the 3s 2 1S→3s3p 3P o transition is interpreted to be due to very sensitive resonance interference.

AB - Strong resonance features were observed in the near-threshold excitation of Ar 6+. Absolute total cross sections for electron-impact excitation of the 3s 2 1S→3s3p 3P o and 3s 2 1S→3s3p 1P o transitions in Ar 6+ were measured by using the merged electron-ion beams energy loss technique. The results are compared with the R-matrix close-coupling theory (CCR) and the independent-process isolated-resonance distorted-wave approximation. Observed disagreement between CCR theory and experiment at the near-threshold peak for the 3s 2 1S→3s3p 3P o transition is interpreted to be due to very sensitive resonance interference.

UR - https://www.scopus.com/pages/publications/0009694390

M3 - Article

AN - SCOPUS:0009694390

SN - 1050-2947

VL - 55

SP - 2044

EP - 2049

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

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

IS - 3

ER -

Resonance interference and absolute cross sections in near-threshold electron-impact excitation of the 3s ² ¹S→3s3p ³P and 3s ² ¹S→3s3p ¹P transitions in Ar ⁶⁺

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