Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

A. Czasch; M. Schöffler; M. Hattass; S. Schössler; T. Jahnke; Th Weber; A. Staudte; J. Titze; C. Wimmer; S. Kammer; M. Weckenbrock; S. Voss; R. E. Grisenti; O. Jagutzki; L. Ph H. Schmidt; H. Schmidt-Böcking; R. Dörner; J. M. Rost; T. Schneider; Chien Nan Liu; I. Bray; A. S. Kheifets; K. Bartschat

doi:10.1103/PhysRevLett.95.243003

Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

A. Czasch^*, M. Schöffler, M. Hattass, S. Schössler, T. Jahnke, Th Weber, A. Staudte, J. Titze, C. Wimmer, S. Kammer, M. Weckenbrock, S. Voss, R. E. Grisenti, O. Jagutzki, L. Ph H. Schmidt, H. Schmidt-Böcking, R. Dörner, J. M. Rost, T. Schneider, Chien Nan LiuI. Bray, A. S. Kheifets, K. Bartschat

^*Corresponding author for this work

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

26 Citations (Scopus)

Abstract

Partial photoionization cross sections σN(Eγ) and photoelectron angular distributions βN(Eγ) were measured for the final ionic states He+(N>4) in the region between the N=8 and N=13 thresholds (Eγ>78.155eV) using the cold target recoil ion momentum spectroscopy technique (COLTRIMS). Comparison of the experimental data with two independent sets of theoretical predictions reveals disagreement for the branching ratios to the various HeN+ states. The angular distributions just below the double ionization threshold suggest an excitation process for highly excited N states similar to the Wannier mechanism for double ionization.

Original language	English
Article number	243003
Journal	Physical Review Letters
Volume	95
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.95.243003
Publication status	Published - 9 Dec 2005

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Czasch, A., Schöffler, M., Hattass, M., Schössler, S., Jahnke, T., Weber, T., Staudte, A., Titze, J., Wimmer, C., Kammer, S., Weckenbrock, M., Voss, S., Grisenti, R. E., Jagutzki, O., Schmidt, L. P. H., Schmidt-Böcking, H., Dörner, R., Rost, J. M., Schneider, T., ... Bartschat, K. (2005). Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold. Physical Review Letters, 95(24), Article 243003. https://doi.org/10.1103/PhysRevLett.95.243003

@article{e7c094b162e6468ca3e7e94717ae2081,

title = "Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold",

abstract = "Partial photoionization cross sections σN(Eγ) and photoelectron angular distributions βN(Eγ) were measured for the final ionic states He+(N>4) in the region between the N=8 and N=13 thresholds (Eγ>78.155eV) using the cold target recoil ion momentum spectroscopy technique (COLTRIMS). Comparison of the experimental data with two independent sets of theoretical predictions reveals disagreement for the branching ratios to the various HeN+ states. The angular distributions just below the double ionization threshold suggest an excitation process for highly excited N states similar to the Wannier mechanism for double ionization.",

author = "A. Czasch and M. Sch{\"o}ffler and M. Hattass and S. Sch{\"o}ssler and T. Jahnke and Th Weber and A. Staudte and J. Titze and C. Wimmer and S. Kammer and M. Weckenbrock and S. Voss and Grisenti, {R. E.} and O. Jagutzki and Schmidt, {L. Ph H.} and H. Schmidt-B{\"o}cking and R. D{\"o}rner and Rost, {J. M.} and T. Schneider and Liu, {Chien Nan} and I. Bray and Kheifets, {A. S.} and K. Bartschat",

year = "2005",

month = dec,

day = "9",

doi = "10.1103/PhysRevLett.95.243003",

language = "English",

volume = "95",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

}

Czasch, A, Schöffler, M, Hattass, M, Schössler, S, Jahnke, T, Weber, T, Staudte, A, Titze, J, Wimmer, C, Kammer, S, Weckenbrock, M, Voss, S, Grisenti, RE, Jagutzki, O, Schmidt, LPH, Schmidt-Böcking, H, Dörner, R, Rost, JM, Schneider, T, Liu, CN, Bray, I, Kheifets, AS & Bartschat, K 2005, 'Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold', Physical Review Letters, vol. 95, no. 24, 243003. https://doi.org/10.1103/PhysRevLett.95.243003

TY - JOUR

T1 - Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

AU - Czasch, A.

AU - Schöffler, M.

AU - Hattass, M.

AU - Schössler, S.

AU - Jahnke, T.

AU - Weber, Th

AU - Staudte, A.

AU - Titze, J.

AU - Wimmer, C.

AU - Kammer, S.

AU - Weckenbrock, M.

AU - Voss, S.

AU - Grisenti, R. E.

AU - Jagutzki, O.

AU - Schmidt, L. Ph H.

AU - Schmidt-Böcking, H.

AU - Dörner, R.

AU - Rost, J. M.

AU - Schneider, T.

AU - Liu, Chien Nan

AU - Bray, I.

AU - Kheifets, A. S.

AU - Bartschat, K.

PY - 2005/12/9

Y1 - 2005/12/9

N2 - Partial photoionization cross sections σN(Eγ) and photoelectron angular distributions βN(Eγ) were measured for the final ionic states He+(N>4) in the region between the N=8 and N=13 thresholds (Eγ>78.155eV) using the cold target recoil ion momentum spectroscopy technique (COLTRIMS). Comparison of the experimental data with two independent sets of theoretical predictions reveals disagreement for the branching ratios to the various HeN+ states. The angular distributions just below the double ionization threshold suggest an excitation process for highly excited N states similar to the Wannier mechanism for double ionization.

AB - Partial photoionization cross sections σN(Eγ) and photoelectron angular distributions βN(Eγ) were measured for the final ionic states He+(N>4) in the region between the N=8 and N=13 thresholds (Eγ>78.155eV) using the cold target recoil ion momentum spectroscopy technique (COLTRIMS). Comparison of the experimental data with two independent sets of theoretical predictions reveals disagreement for the branching ratios to the various HeN+ states. The angular distributions just below the double ionization threshold suggest an excitation process for highly excited N states similar to the Wannier mechanism for double ionization.

UR - http://www.scopus.com/inward/record.url?scp=33244485822&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.95.243003

DO - 10.1103/PhysRevLett.95.243003

M3 - Article

SN - 0031-9007

VL - 95

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 243003

ER -

Partial photoionization cross sections and angular distributions for double excitation of helium up to the N=13 threshold

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