Výsledky vyhledávání - "Jon C. Levin"

K-shell photoionization of Be-like carbon ions: experiment and theory for C2+

Autor: R. A. Phaneuf, Aaron Covington, Alex Aguilar, Brendan M. McLaughlin, Erik D. Emmons, S W J Scully, Jon C. Levin, Daniela Leitner, Alfred S. Schlachter, Alfred Müller, Stefan Schippers, Ralph Püttner, M. Halka, M S Lubell

Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 38:1967-1975

Absolute cross-section measurements for K-shell photoionization of Be-like C2+ ions have been performed in the photon energy range 292 325 eV. These measurements have been made using the photon ion merged-beam endstation at the Advanced Light Source,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af3e721a76ff0b248f4ce7bcfdd73e13
https://doi.org/10.1088/0953-4075/38/12/011

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Studies of fluorescence and Auger decay following inner-shell photoionization

Autor: Jon C. Levin, G. Bradley Armen

Publikováno v: Radiation Physics and Chemistry. 70:105-121

Near inner-shell absorption edges, Auger and fluorescence spectra which characterize the first step of a complex cascade process exhibit properties which are well described by radiationless and radiative resonant Raman scattering theory. We present c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ce48df08ed4e0cc99675079ca664daf
https://doi.org/10.1016/j.radphyschem.2003.12.008

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Common Window Resonance Features in K and Heavier Alkaline Atoms Rb and Cs

Autor: M Koide, Brett DePaola, Fumihiro Koike, Jon C. Levin, Shunsuke Ohtani, Stephan Fritzsche, Tetsuo Nagata, Y. Azuma, R. Wehlitz, Ming-Tie Huang

Publikováno v: Journal of the Physical Society of Japan. 71:2681-2686

A previous study of subvalence s -shell photoionization of potassium [Koide et al. : J. Phys. Soc. Jpn. 71 (2002) 1676] has been extended to the cases of heavier alkaline atoms Rb and Cs. We have measured the photoion time-of-flight spectra using mon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cbad42d6ed47ecf991a4d43edb5ecafd
https://doi.org/10.1143/jpsj.71.2681

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Studies of Ar photoion charge-state distributions near the K-shell threshold

Autor: Ralf Wehlitz, Jon C. Levin, L. Pibida, Ivan A. Sellin

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 155:43-52

An ion time-of-flight (TOF) spectrometer was used to measure Ar photoion charge-state distributions near the K-shell threshold (hν=3206.3 eV). When photons interact with argon atoms producing 1s holes, the atoms typically decay by KLL Auger-electron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ad4e27a0a76fbd5d35f47c4add0fbf5
https://doi.org/10.1016/s0168-583x(98)01094-5

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Observation of angular correlation between subsequently emitted Auger electrons

Autor: Jon C. Levin, L. Pibida, Ralf Wehlitz, Ivan A. Sellin

Publikováno v: Physical Review A. 59:421-426

In an exploratory feasibility study we have measured the angular correlation between Auger electrons that were emitted in a cascadelike decay process after resonant photoexcitation, using synchrotron radiation from the Brookhaven National Synchrotron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fed75a21c85987e609f5299abe7f5394
https://doi.org/10.1103/physreva.59.421

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Photofragmentation of third-row hydrides following photoexcitation at deep-core levels

Autor: Marc Simon, R. Martin, D. L. Hansen, Rupert C. C. Perera, Greg R. Fisher, Ivan A. Sellin, J. Cotter, Brett J. Vanderford, Dennis W. Lindle, Jon C. Levin, Scott B. Whitfield, P. A. Neill, Oliver Hemmers, Yasushi Uehara, Kam Tong Leung, M. E. Arrasate

Publikováno v: Physical Review A. 58:3757-3765

The relaxation dynamics of HCl, DCl, H2S, and D2S following photoexcitation in the vicinities of the Cl and S K-shell thresholds ( ;2.8 keV for Cl, ;2.5 keV for S! were studied by means of ion time-of-flight mass spectroscopy. In all cases, the onset

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::220ebf6bd58aa4580a26f5304090423f
https://doi.org/10.1103/physreva.58.3757

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Method for determining absolute partial cross sections for radiative and nonradiative deexcitation of metastable hydrogenlike ions

Autor: Henrik Cederquist, Ivan A. Sellin, Leif Liljeby, Henning T. Schmidt, A. Langereis, K. Haghighat, S. H. Schwartz, A. Fardi, Jon C. Levin

Publikováno v: Physical Review A. 58:2887-2894

In this work we present a method developed to measure separately the radiative and nonradiative contributions to the cross section for collisional deexcitation of metastable hydrogenlike ions. We present the results of the first experiment applying t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc70813d0d61582a8b6e9d6f62a6a550
https://doi.org/10.1103/physreva.58.2887

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Postcollision-interaction effects in HCl following photofragmentation near the chlorineKedge

Autor: J. Cotter, D. L. Hansen, Ivan A. Sellin, Mel I. Simon, R. Martin, Scott B. Whitfield, Jon C. Levin, M. E. Arrasate, Dennis W. Lindle, P. A. Neill, G. B. Armen, Brett J. Vanderford, Rupert C. C. Perera, Kam Tong Leung, Yasushi Uehara, Greg R. Fisher

Publikováno v: Physical Review A. 57:R4090-R4093

Ion time-of-flight mass spectroscopy was used to study the relaxation dynamics of HCl following photoexcitation in the vicinity of the Cl $K$ threshold $(\ensuremath{\approx}2.8\mathrm{keV}).$ Detailed observations of molecular fragmentation mediated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb7f9da1cc76cd366c66008ee80f485c
https://doi.org/10.1103/physreva.57.r4090

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Neutral dissociation of hydrogen following photoexcitation of HCl at the chlorineKedge

Autor: D. L. Hansen, Ivan A. Sellin, Dennis W. Lindle, M. E. Arrasate, Greg R. Fisher, Jon C. Levin, Kam Tong Leung, Brett J. Vanderford, Scott B. Whitfield, Yasushi Uehara, P. A. Neill, Rupert C. C. Perera, M. Simon, J. Cotter, R. Martin

Publikováno v: Physical Review A. 57:2608-2611

Time-of-flight mass spectroscopy was used to study the relaxation dynamics of HCl following photoexcitation in the vicinity of the Cl K edge ({approximately}2.8keV) using monochromatic synchrotron radiation. At the lowest resonant excitation to the 6

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9df50a42584ef5f037d38335082fcf3c
https://doi.org/10.1103/physreva.57.2608

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