Direct measurements of the ionization potential depression in a dense plasma

O. Ciricosta; S. M. Vinko; H. K. Chung; B. I. Cho; C. R.D. Brown; T. Burian; J. Chalupský; K. Engelhorn; R. W. Falcone; C. Graves; V. Hájková; A. Higginbotham; L. Juha; J. Krzywinski; H. J. Lee; M. Messerschmidt; C. D. Murphy; Y. Ping; D. S. Rackstraw; A. Scherz; W. Schlotter; S. Toleikis; J. J. Turner; L. Vysin; T. Wang; B. Wu; U. Zastrau; D. Zhu; R. W. Lee; P. Heimann; B. Nagler; J. S. Wark

doi:10.1103/PhysRevLett.109.065002

Direct measurements of the ionization potential depression in a dense plasma

O. Ciricosta, S. M. Vinko, H. K. Chung, B. I. Cho, C. R.D. Brown, T. Burian, J. Chalupský, K. Engelhorn, R. W. Falcone, C. Graves, V. Hájková, A. Higginbotham, L. Juha, J. Krzywinski, H. J. Lee, M. Messerschmidt, C. D. Murphy, Y. Ping, D. S. Rackstraw, A. ScherzW. Schlotter, S. Toleikis, J. J. Turner, L. Vysin, T. Wang, B. Wu, U. Zastrau, D. Zhu, R. W. Lee, P. Heimann, B. Nagler, J. S. Wark

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226 Scopus citations

Abstract

We have used the Linac Coherent Light Source to generate solid-density aluminum plasmas at temperatures of up to 180 eV. By varying the photon energy of the x rays that both create and probe the plasma, and observing the K-α fluorescence, we can directly measure the position of the K edge of the highly charged ions within the system. The results are found to disagree with the predictions of the extensively used Stewart-Pyatt model, but are consistent with the earlier model of Ecker and Kröll, which predicts significantly greater depression of the ionization potential.

Original language	English (US)
Article number	065002
Journal	Physical Review Letters
Volume	109
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.109.065002
State	Published - Aug 6 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.109.065002

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Ciricosta, O., Vinko, S. M., Chung, H. K., Cho, B. I., Brown, C. R. D., Burian, T., Chalupský, J., Engelhorn, K., Falcone, R. W., Graves, C., Hájková, V., Higginbotham, A., Juha, L., Krzywinski, J., Lee, H. J., Messerschmidt, M., Murphy, C. D., Ping, Y., Rackstraw, D. S., ... Wark, J. S. (2012). Direct measurements of the ionization potential depression in a dense plasma. Physical Review Letters, 109(6), Article 065002. https://doi.org/10.1103/PhysRevLett.109.065002

Ciricosta, O, Vinko, SM, Chung, HK, Cho, BI, Brown, CRD, Burian, T, Chalupský, J, Engelhorn, K, Falcone, RW, Graves, C, Hájková, V, Higginbotham, A, Juha, L, Krzywinski, J, Lee, HJ, Messerschmidt, M, Murphy, CD, Ping, Y, Rackstraw, DS, Scherz, A, Schlotter, W, Toleikis, S, Turner, JJ, Vysin, L, Wang, T, Wu, B, Zastrau, U, Zhu, D, Lee, RW, Heimann, P, Nagler, B & Wark, JS 2012, 'Direct measurements of the ionization potential depression in a dense plasma', Physical Review Letters, vol. 109, no. 6, 065002. https://doi.org/10.1103/PhysRevLett.109.065002

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title = "Direct measurements of the ionization potential depression in a dense plasma",

abstract = "We have used the Linac Coherent Light Source to generate solid-density aluminum plasmas at temperatures of up to 180 eV. By varying the photon energy of the x rays that both create and probe the plasma, and observing the K-α fluorescence, we can directly measure the position of the K edge of the highly charged ions within the system. The results are found to disagree with the predictions of the extensively used Stewart-Pyatt model, but are consistent with the earlier model of Ecker and Kr{\"o}ll, which predicts significantly greater depression of the ionization potential.",

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AU - Ciricosta, O.

AU - Vinko, S. M.

AU - Chung, H. K.

AU - Cho, B. I.

AU - Brown, C. R.D.

AU - Burian, T.

AU - Chalupský, J.

AU - Engelhorn, K.

AU - Falcone, R. W.

AU - Graves, C.

AU - Hájková, V.

AU - Higginbotham, A.

AU - Juha, L.

AU - Krzywinski, J.

AU - Lee, H. J.

AU - Messerschmidt, M.

AU - Murphy, C. D.

AU - Ping, Y.

AU - Rackstraw, D. S.

AU - Scherz, A.

AU - Schlotter, W.

AU - Toleikis, S.

AU - Turner, J. J.

AU - Vysin, L.

AU - Wang, T.

AU - Wu, B.

AU - Zastrau, U.

AU - Zhu, D.

AU - Lee, R. W.

AU - Heimann, P.

AU - Nagler, B.

AU - Wark, J. S.

PY - 2012/8/6

Y1 - 2012/8/6

N2 - We have used the Linac Coherent Light Source to generate solid-density aluminum plasmas at temperatures of up to 180 eV. By varying the photon energy of the x rays that both create and probe the plasma, and observing the K-α fluorescence, we can directly measure the position of the K edge of the highly charged ions within the system. The results are found to disagree with the predictions of the extensively used Stewart-Pyatt model, but are consistent with the earlier model of Ecker and Kröll, which predicts significantly greater depression of the ionization potential.

AB - We have used the Linac Coherent Light Source to generate solid-density aluminum plasmas at temperatures of up to 180 eV. By varying the photon energy of the x rays that both create and probe the plasma, and observing the K-α fluorescence, we can directly measure the position of the K edge of the highly charged ions within the system. The results are found to disagree with the predictions of the extensively used Stewart-Pyatt model, but are consistent with the earlier model of Ecker and Kröll, which predicts significantly greater depression of the ionization potential.

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Direct measurements of the ionization potential depression in a dense plasma

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