Covariance mapping of two-photon double core hole states in C2H2 and C2H6 produced by an X-ray free electron laser

M. Mucke; V. Zhaunerchyk; L. J. Frasinski; R. J. Squibb; M. Siano; J. H.D. Eland; P. Linusson; P. Salén; P. V.D. Meulen; R. D. Thomas; M. Larsson; L. Foucar; J. Ullrich; K. Motomura; S. Mondal; K. Ueda; T. Osipov; L. Fang; B. F. Murphy; N. Berrah; C. Bostedt; J. D. Bozek; S. Schorb; M. Messerschmidt; J. M. Glownia; J. P. Cryan; R. N. Coffee; O. Takahashi; S. Wada; M. N. Piancastelli; R. Richter; K. C. Prince; R. Feifel

doi:10.1088/1367-2630/17/7/073002

Covariance mapping of two-photon double core hole states in C₂H₂ and C₂H₆ produced by an X-ray free electron laser

M. Mucke, V. Zhaunerchyk, L. J. Frasinski, R. J. Squibb, M. Siano, J. H.D. Eland, P. Linusson, P. Salén, P. V.D. Meulen, R. D. Thomas, M. Larsson, L. Foucar, J. Ullrich, K. Motomura, S. Mondal, K. Ueda, T. Osipov, L. Fang, B. F. Murphy, N. BerrahC. Bostedt, J. D. Bozek, S. Schorb, M. Messerschmidt, J. M. Glownia, J. P. Cryan, R. N. Coffee, O. Takahashi, S. Wada, M. N. Piancastelli, R. Richter, K. C. Prince, R. Feifel

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

29 Scopus citations

Abstract

Few-photon ionization and relaxation processes in acetylene (C₂H₂) and ethane (C₂H₆) were investigated at the linac coherent light source X-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlation spectroscopy technique based on a magnetic bottle. The analysis method of covariance mapping has been applied and enhanced, allowing us to identify electron pairs associated with double core hole (DCH) production and competing multiple ionization processes including Auger decay sequences. The experimental technique and the analysis procedure are discussed in the light of earlier investigations of DCH studies carried out at the same FEL and at third generation synchrotron radiation sources. In particular, we demonstrate the capability of the covariance mapping technique to disentangle the formation of molecular DCH states which is barely feasible with conventional electron spectroscopy methods.

Original language	English (US)
Article number	073002
Journal	New Journal of Physics
Volume	17
Issue number	7
DOIs	https://doi.org/10.1088/1367-2630/17/7/073002
State	Published - Jul 1 2015
Externally published	Yes

Keywords

covariance mapping
double core hole
few-photon process
free electron laser

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1088/1367-2630/17/7/073002

Cite this

Mucke, M., Zhaunerchyk, V., Frasinski, L. J., Squibb, R. J., Siano, M., Eland, J. H. D., Linusson, P., Salén, P., Meulen, P. V. D., Thomas, R. D., Larsson, M., Foucar, L., Ullrich, J., Motomura, K., Mondal, S., Ueda, K., Osipov, T., Fang, L., Murphy, B. F., ... Feifel, R. (2015). Covariance mapping of two-photon double core hole states in C₂H₂ and C₂H₆ produced by an X-ray free electron laser. New Journal of Physics, 17(7), Article 073002. https://doi.org/10.1088/1367-2630/17/7/073002

Mucke, M, Zhaunerchyk, V, Frasinski, LJ, Squibb, RJ, Siano, M, Eland, JHD, Linusson, P, Salén, P, Meulen, PVD, Thomas, RD, Larsson, M, Foucar, L, Ullrich, J, Motomura, K, Mondal, S, Ueda, K, Osipov, T, Fang, L, Murphy, BF, Berrah, N, Bostedt, C, Bozek, JD, Schorb, S, Messerschmidt, M, Glownia, JM, Cryan, JP, Coffee, RN, Takahashi, O, Wada, S, Piancastelli, MN, Richter, R, Prince, KC & Feifel, R 2015, 'Covariance mapping of two-photon double core hole states in C₂H₂ and C₂H₆ produced by an X-ray free electron laser', New Journal of Physics, vol. 17, no. 7, 073002. https://doi.org/10.1088/1367-2630/17/7/073002

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title = "Covariance mapping of two-photon double core hole states in C2H2 and C2H6 produced by an X-ray free electron laser",

abstract = "Few-photon ionization and relaxation processes in acetylene (C2H2) and ethane (C2H6) were investigated at the linac coherent light source X-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlation spectroscopy technique based on a magnetic bottle. The analysis method of covariance mapping has been applied and enhanced, allowing us to identify electron pairs associated with double core hole (DCH) production and competing multiple ionization processes including Auger decay sequences. The experimental technique and the analysis procedure are discussed in the light of earlier investigations of DCH studies carried out at the same FEL and at third generation synchrotron radiation sources. In particular, we demonstrate the capability of the covariance mapping technique to disentangle the formation of molecular DCH states which is barely feasible with conventional electron spectroscopy methods.",

keywords = "covariance mapping, double core hole, few-photon process, free electron laser",

author = "M. Mucke and V. Zhaunerchyk and Frasinski, {L. J.} and Squibb, {R. J.} and M. Siano and Eland, {J. H.D.} and P. Linusson and P. Sal{\'e}n and Meulen, {P. V.D.} and Thomas, {R. D.} and M. Larsson and L. Foucar and J. Ullrich and K. Motomura and S. Mondal and K. Ueda and T. Osipov and L. Fang and Murphy, {B. F.} and N. Berrah and C. Bostedt and Bozek, {J. D.} and S. Schorb and M. Messerschmidt and Glownia, {J. M.} and Cryan, {J. P.} and Coffee, {R. N.} and O. Takahashi and S. Wada and Piancastelli, {M. N.} and R. Richter and Prince, {K. C.} and R. Feifel",

note = "Publisher Copyright: {\textcopyright} 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.",

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AU - Mucke, M.

AU - Zhaunerchyk, V.

AU - Frasinski, L. J.

AU - Squibb, R. J.

AU - Siano, M.

AU - Eland, J. H.D.

AU - Linusson, P.

AU - Salén, P.

AU - Meulen, P. V.D.

AU - Thomas, R. D.

AU - Larsson, M.

AU - Foucar, L.

AU - Ullrich, J.

AU - Motomura, K.

AU - Mondal, S.

AU - Ueda, K.

AU - Osipov, T.

AU - Fang, L.

AU - Murphy, B. F.

AU - Berrah, N.

AU - Bostedt, C.

AU - Bozek, J. D.

AU - Schorb, S.

AU - Messerschmidt, M.

AU - Glownia, J. M.

AU - Cryan, J. P.

AU - Coffee, R. N.

AU - Takahashi, O.

AU - Wada, S.

AU - Piancastelli, M. N.

AU - Richter, R.

AU - Prince, K. C.

AU - Feifel, R.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Few-photon ionization and relaxation processes in acetylene (C2H2) and ethane (C2H6) were investigated at the linac coherent light source X-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlation spectroscopy technique based on a magnetic bottle. The analysis method of covariance mapping has been applied and enhanced, allowing us to identify electron pairs associated with double core hole (DCH) production and competing multiple ionization processes including Auger decay sequences. The experimental technique and the analysis procedure are discussed in the light of earlier investigations of DCH studies carried out at the same FEL and at third generation synchrotron radiation sources. In particular, we demonstrate the capability of the covariance mapping technique to disentangle the formation of molecular DCH states which is barely feasible with conventional electron spectroscopy methods.

AB - Few-photon ionization and relaxation processes in acetylene (C2H2) and ethane (C2H6) were investigated at the linac coherent light source X-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlation spectroscopy technique based on a magnetic bottle. The analysis method of covariance mapping has been applied and enhanced, allowing us to identify electron pairs associated with double core hole (DCH) production and competing multiple ionization processes including Auger decay sequences. The experimental technique and the analysis procedure are discussed in the light of earlier investigations of DCH studies carried out at the same FEL and at third generation synchrotron radiation sources. In particular, we demonstrate the capability of the covariance mapping technique to disentangle the formation of molecular DCH states which is barely feasible with conventional electron spectroscopy methods.

KW - covariance mapping

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KW - few-photon process

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