Nonlinear atomic response to intense ultrashort x rays

G. Doumy; C. Roedig; S. K. Son; C. I. Blaga; A. D. Dichiara; R. Santra; N. Berrah; C. Bostedt; J. D. Bozek; P. H. Bucksbaum; J. P. Cryan; L. Fang; S. Ghimire; J. M. Glownia; M. Hoener; E. P. Kanter; B. Krässig; M. Kuebel; M. Messerschmidt; G. G. Paulus; D. A. Reis; N. Rohringer; L. Young; P. Agostini; L. F. Dimauro

doi:10.1103/PhysRevLett.106.083002

Nonlinear atomic response to intense ultrashort x rays

G. Doumy, C. Roedig, S. K. Son, C. I. Blaga, A. D. Dichiara, R. Santra, N. Berrah, C. Bostedt, J. D. Bozek, P. H. Bucksbaum, J. P. Cryan, L. Fang, S. Ghimire, J. M. Glownia, M. Hoener, E. P. Kanter, B. Krässig, M. Kuebel, M. Messerschmidt, G. G. PaulusD. A. Reis, N. Rohringer, L. Young, P. Agostini, L. F. Dimauro

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220 Scopus citations

Abstract

The nonlinear absorption mechanisms of neon atoms to intense, femtosecond kilovolt x rays are investigated. The production of Ne9⁺ is observed at x-ray frequencies below the Ne8⁺, 1s2 absorption edge and demonstrates a clear quadratic dependence on fluence. Theoretical analysis shows that the production is a combination of the two-photon ionization of Ne8 ⁺ ground state and a high-order sequential process involving single-photon production and ionization of transient excited states on a time scale faster than the Auger decay. We find that the nonlinear direct two-photon ionization cross section is orders of magnitude higher than expected from previous calculations.

Original language	English (US)
Article number	083002
Journal	Physical Review Letters
Volume	106
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.106.083002
State	Published - Feb 24 2011
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.106.083002

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Doumy, G., Roedig, C., Son, S. K., Blaga, C. I., Dichiara, A. D., Santra, R., Berrah, N., Bostedt, C., Bozek, J. D., Bucksbaum, P. H., Cryan, J. P., Fang, L., Ghimire, S., Glownia, J. M., Hoener, M., Kanter, E. P., Krässig, B., Kuebel, M., Messerschmidt, M., ... Dimauro, L. F. (2011). Nonlinear atomic response to intense ultrashort x rays. Physical Review Letters, 106(8), Article 083002. https://doi.org/10.1103/PhysRevLett.106.083002

Doumy, G, Roedig, C, Son, SK, Blaga, CI, Dichiara, AD, Santra, R, Berrah, N, Bostedt, C, Bozek, JD, Bucksbaum, PH, Cryan, JP, Fang, L, Ghimire, S, Glownia, JM, Hoener, M, Kanter, EP, Krässig, B, Kuebel, M, Messerschmidt, M, Paulus, GG, Reis, DA, Rohringer, N, Young, L, Agostini, P & Dimauro, LF 2011, 'Nonlinear atomic response to intense ultrashort x rays', Physical Review Letters, vol. 106, no. 8, 083002. https://doi.org/10.1103/PhysRevLett.106.083002

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title = "Nonlinear atomic response to intense ultrashort x rays",

abstract = "The nonlinear absorption mechanisms of neon atoms to intense, femtosecond kilovolt x rays are investigated. The production of Ne9+ is observed at x-ray frequencies below the Ne8+, 1s2 absorption edge and demonstrates a clear quadratic dependence on fluence. Theoretical analysis shows that the production is a combination of the two-photon ionization of Ne8 + ground state and a high-order sequential process involving single-photon production and ionization of transient excited states on a time scale faster than the Auger decay. We find that the nonlinear direct two-photon ionization cross section is orders of magnitude higher than expected from previous calculations.",

author = "G. Doumy and C. Roedig and Son, {S. K.} and Blaga, {C. I.} and Dichiara, {A. D.} and R. Santra and N. Berrah and C. Bostedt and Bozek, {J. D.} and Bucksbaum, {P. H.} and Cryan, {J. P.} and L. Fang and S. Ghimire and Glownia, {J. M.} and M. Hoener and Kanter, {E. P.} and B. Kr{\"a}ssig and M. Kuebel and M. Messerschmidt and Paulus, {G. G.} and Reis, {D. A.} and N. Rohringer and L. Young and P. Agostini and Dimauro, {L. F.}",

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doi = "10.1103/PhysRevLett.106.083002",

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AU - Doumy, G.

AU - Roedig, C.

AU - Son, S. K.

AU - Blaga, C. I.

AU - Dichiara, A. D.

AU - Santra, R.

AU - Berrah, N.

AU - Bostedt, C.

AU - Bozek, J. D.

AU - Bucksbaum, P. H.

AU - Cryan, J. P.

AU - Fang, L.

AU - Ghimire, S.

AU - Glownia, J. M.

AU - Hoener, M.

AU - Kanter, E. P.

AU - Krässig, B.

AU - Kuebel, M.

AU - Messerschmidt, M.

AU - Paulus, G. G.

AU - Reis, D. A.

AU - Rohringer, N.

AU - Young, L.

AU - Agostini, P.

AU - Dimauro, L. F.

PY - 2011/2/24

Y1 - 2011/2/24

N2 - The nonlinear absorption mechanisms of neon atoms to intense, femtosecond kilovolt x rays are investigated. The production of Ne9+ is observed at x-ray frequencies below the Ne8+, 1s2 absorption edge and demonstrates a clear quadratic dependence on fluence. Theoretical analysis shows that the production is a combination of the two-photon ionization of Ne8 + ground state and a high-order sequential process involving single-photon production and ionization of transient excited states on a time scale faster than the Auger decay. We find that the nonlinear direct two-photon ionization cross section is orders of magnitude higher than expected from previous calculations.

AB - The nonlinear absorption mechanisms of neon atoms to intense, femtosecond kilovolt x rays are investigated. The production of Ne9+ is observed at x-ray frequencies below the Ne8+, 1s2 absorption edge and demonstrates a clear quadratic dependence on fluence. Theoretical analysis shows that the production is a combination of the two-photon ionization of Ne8 + ground state and a high-order sequential process involving single-photon production and ionization of transient excited states on a time scale faster than the Auger decay. We find that the nonlinear direct two-photon ionization cross section is orders of magnitude higher than expected from previous calculations.

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Nonlinear atomic response to intense ultrashort x rays

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