Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar

D. Guénot; K. Klünder; C. L. Arnold; D. Kroon; J. M. Dahlström; M. Miranda; T. Fordell; M. Gisselbrecht; P. Johnsson; J. Mauritsson; E. Lindroth; A. Maquet; R. Taïeb; A. L'Huillier; A. S. Kheifets

doi:10.1103/PhysRevA.85.053424

Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar

D. Guénot^*, K. Klünder, C. L. Arnold, D. Kroon, J. M. Dahlström, M. Miranda, T. Fordell, M. Gisselbrecht, P. Johnsson, J. Mauritsson, E. Lindroth, A. Maquet, R. Taïeb, A. L'Huillier, A. S. Kheifets

^*Corresponding author for this work

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

116 Citations (Scopus)

Abstract

We present experimental measurements and theoretical calculations of photoionization time delays from the 3s and 3p shells in Ar in the photon energy range of 32-42 eV. The experimental measurements are performed by interferometry using attosecond pulse trains and the infrared laser used for their generation. The theoretical approach includes intershell correlation effects between the 3s and 3p shells within the framework of the random-phase approximation with exchange. The connection between single-photon ionization and the two-color two-photon ionization process used in the measurement is established using the recently developed asymptotic approximation for the complex transition amplitudes of laser-assisted photoionization. We compare and discuss the theoretical and experimental results, especially in the region where strong intershell correlations in the 3s→kp channel lead to an induced "Cooper" minimum in the 3s ionization cross section.

Original language	English
Article number	053424
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	85
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.85.053424
Publication status	Published - 31 May 2012

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Guénot, D., Klünder, K., Arnold, C. L., Kroon, D., Dahlström, J. M., Miranda, M., Fordell, T., Gisselbrecht, M., Johnsson, P., Mauritsson, J., Lindroth, E., Maquet, A., Taïeb, R., L'Huillier, A., & Kheifets, A. S. (2012). Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar. Physical Review A - Atomic, Molecular, and Optical Physics, 85(5), Article 053424. https://doi.org/10.1103/PhysRevA.85.053424

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title = "Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar",

abstract = "We present experimental measurements and theoretical calculations of photoionization time delays from the 3s and 3p shells in Ar in the photon energy range of 32-42 eV. The experimental measurements are performed by interferometry using attosecond pulse trains and the infrared laser used for their generation. The theoretical approach includes intershell correlation effects between the 3s and 3p shells within the framework of the random-phase approximation with exchange. The connection between single-photon ionization and the two-color two-photon ionization process used in the measurement is established using the recently developed asymptotic approximation for the complex transition amplitudes of laser-assisted photoionization. We compare and discuss the theoretical and experimental results, especially in the region where strong intershell correlations in the 3s→kp channel lead to an induced {"}Cooper{"} minimum in the 3s ionization cross section.",

author = "D. Gu{\'e}not and K. Kl{\"u}nder and Arnold, {C. L.} and D. Kroon and Dahlstr{\"o}m, {J. M.} and M. Miranda and T. Fordell and M. Gisselbrecht and P. Johnsson and J. Mauritsson and E. Lindroth and A. Maquet and R. Ta{\"i}eb and A. L'Huillier and Kheifets, {A. S.}",

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Guénot, D, Klünder, K, Arnold, CL, Kroon, D, Dahlström, JM, Miranda, M, Fordell, T, Gisselbrecht, M, Johnsson, P, Mauritsson, J, Lindroth, E, Maquet, A, Taïeb, R, L'Huillier, A & Kheifets, AS 2012, 'Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar', Physical Review A - Atomic, Molecular, and Optical Physics, vol. 85, no. 5, 053424. https://doi.org/10.1103/PhysRevA.85.053424

TY - JOUR

T1 - Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar

AU - Guénot, D.

AU - Klünder, K.

AU - Arnold, C. L.

AU - Kroon, D.

AU - Dahlström, J. M.

AU - Miranda, M.

AU - Fordell, T.

AU - Gisselbrecht, M.

AU - Johnsson, P.

AU - Mauritsson, J.

AU - Lindroth, E.

AU - Maquet, A.

AU - Taïeb, R.

AU - L'Huillier, A.

AU - Kheifets, A. S.

PY - 2012/5/31

Y1 - 2012/5/31

N2 - We present experimental measurements and theoretical calculations of photoionization time delays from the 3s and 3p shells in Ar in the photon energy range of 32-42 eV. The experimental measurements are performed by interferometry using attosecond pulse trains and the infrared laser used for their generation. The theoretical approach includes intershell correlation effects between the 3s and 3p shells within the framework of the random-phase approximation with exchange. The connection between single-photon ionization and the two-color two-photon ionization process used in the measurement is established using the recently developed asymptotic approximation for the complex transition amplitudes of laser-assisted photoionization. We compare and discuss the theoretical and experimental results, especially in the region where strong intershell correlations in the 3s→kp channel lead to an induced "Cooper" minimum in the 3s ionization cross section.

AB - We present experimental measurements and theoretical calculations of photoionization time delays from the 3s and 3p shells in Ar in the photon energy range of 32-42 eV. The experimental measurements are performed by interferometry using attosecond pulse trains and the infrared laser used for their generation. The theoretical approach includes intershell correlation effects between the 3s and 3p shells within the framework of the random-phase approximation with exchange. The connection between single-photon ionization and the two-color two-photon ionization process used in the measurement is established using the recently developed asymptotic approximation for the complex transition amplitudes of laser-assisted photoionization. We compare and discuss the theoretical and experimental results, especially in the region where strong intershell correlations in the 3s→kp channel lead to an induced "Cooper" minimum in the 3s ionization cross section.

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DO - 10.1103/PhysRevA.85.053424

M3 - Article

SN - 1050-2947

VL - 85

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

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

IS - 5

M1 - 053424

ER -

Photoemission-time-delay measurements and calculations close to the 3s-ionization-cross-section minimum in Ar

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