The photodouble ionisation of helium and heavier rare gases

P. Bolognesi; L. Avaldi; I. Bray; R. Camilloni; M. Coreno; K. Kazansky; A. S. Kheifets; L. Malegat; P. Selles; G. Turri; M. Zitnik

doi:10.1238/Physica.Topical.110a00062

The photodouble ionisation of helium and heavier rare gases

P. Bolognesi^*, L. Avaldi, I. Bray, R. Camilloni, M. Coreno, K. Kazansky, A. S. Kheifets, L. Malegat, P. Selles, G. Turri, M. Zitnik

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

Recent progress in the understanding of the photodouble ionisation process in He and a new set of measurements in Ar are reported. In the case of He we discuss a method which allows to extract the complex amplitudes of the triple differential cross section (TDCS) and their relative phase from the experimental data. This method provides a compact way to compare theory and experiment and does not rely on any assumption on the energy and angular dependence of the TDCS. The results of the TDCS of the Ar²⁺3p⁴( ³P^e) state measured at 20 eV excess energy in equal energy sharing conditions are presented. The data of the present experiment and previous ones of the He²⁺(¹S^e) state in the same kinematic have been represented by an 'exact' parameterisation of the triple differential cross section (Malegat et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 251).

Original language	English
Pages (from-to)	62-67
Number of pages	6
Journal	Physica Scripta
Volume	T110
DOIs	https://doi.org/10.1238/Physica.Topical.110a00062
Publication status	Published - 2004
Event	XXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC - Stockholm, Sweden Duration: 23 Jul 2003 → 29 Jul 2003

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10.1238/Physica.Topical.110a00062

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title = "The photodouble ionisation of helium and heavier rare gases",

abstract = "Recent progress in the understanding of the photodouble ionisation process in He and a new set of measurements in Ar are reported. In the case of He we discuss a method which allows to extract the complex amplitudes of the triple differential cross section (TDCS) and their relative phase from the experimental data. This method provides a compact way to compare theory and experiment and does not rely on any assumption on the energy and angular dependence of the TDCS. The results of the TDCS of the Ar2+3p4( 3Pe) state measured at 20 eV excess energy in equal energy sharing conditions are presented. The data of the present experiment and previous ones of the He2+(1Se) state in the same kinematic have been represented by an 'exact' parameterisation of the triple differential cross section (Malegat et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 251).",

author = "P. Bolognesi and L. Avaldi and I. Bray and R. Camilloni and M. Coreno and K. Kazansky and Kheifets, {A. S.} and L. Malegat and P. Selles and G. Turri and M. Zitnik",

year = "2004",

doi = "10.1238/Physica.Topical.110a00062",

language = "English",

volume = "T110",

pages = "62--67",

journal = "Physica Scripta",

issn = "0031-8949",

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note = "XXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC ; Conference date: 23-07-2003 Through 29-07-2003",

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TY - JOUR

T1 - The photodouble ionisation of helium and heavier rare gases

AU - Bolognesi, P.

AU - Avaldi, L.

AU - Bray, I.

AU - Camilloni, R.

AU - Coreno, M.

AU - Kazansky, K.

AU - Kheifets, A. S.

AU - Malegat, L.

AU - Selles, P.

AU - Turri, G.

AU - Zitnik, M.

PY - 2004

Y1 - 2004

N2 - Recent progress in the understanding of the photodouble ionisation process in He and a new set of measurements in Ar are reported. In the case of He we discuss a method which allows to extract the complex amplitudes of the triple differential cross section (TDCS) and their relative phase from the experimental data. This method provides a compact way to compare theory and experiment and does not rely on any assumption on the energy and angular dependence of the TDCS. The results of the TDCS of the Ar2+3p4( 3Pe) state measured at 20 eV excess energy in equal energy sharing conditions are presented. The data of the present experiment and previous ones of the He2+(1Se) state in the same kinematic have been represented by an 'exact' parameterisation of the triple differential cross section (Malegat et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 251).

AB - Recent progress in the understanding of the photodouble ionisation process in He and a new set of measurements in Ar are reported. In the case of He we discuss a method which allows to extract the complex amplitudes of the triple differential cross section (TDCS) and their relative phase from the experimental data. This method provides a compact way to compare theory and experiment and does not rely on any assumption on the energy and angular dependence of the TDCS. The results of the TDCS of the Ar2+3p4( 3Pe) state measured at 20 eV excess energy in equal energy sharing conditions are presented. The data of the present experiment and previous ones of the He2+(1Se) state in the same kinematic have been represented by an 'exact' parameterisation of the triple differential cross section (Malegat et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 251).

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U2 - 10.1238/Physica.Topical.110a00062

DO - 10.1238/Physica.Topical.110a00062

M3 - Conference article

SN - 0031-8949

VL - T110

SP - 62

EP - 67

JO - Physica Scripta

JF - Physica Scripta

T2 - XXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC

Y2 - 23 July 2003 through 29 July 2003

ER -

The photodouble ionisation of helium and heavier rare gases

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