Výsledky vyhledávání - "D. H. Madison"

Akademický článek

Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact

Autor: C. M. DeMars, S. J. Ward, J. Colgan, S. Amami, D. H. Madison

Publikováno v: Atoms, Vol 8, Iss 2, p 26 (2020)

We investigate ionization of atomic hydrogen by electron- and positron-impact. We apply the Coulomb–Born (CB1) approximation, various modified CB1 approximations, the three body distorted wave (3DW) approximation, and the time-dependent close-coupl

Externí odkaz: https://doaj.org/article/8c209baed5d04f1c8a04363183bfb364

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Target dependence of postcollision interaction effects on fully differential ionization cross sections

Autor: M. Dhital, R. A. Lomsadze, Esam Ali, Marcelo F. Ciappina, B. R. Lamichhane, A. Silvus, S. Bastola, Ahmad Hasan, Michael Schulz, D. H. Madison

Publikováno v: Physical Review A. 100

We have measured and calculated fully differential cross sections (FDCS) for ionization of helium by 75-keV proton impact. Ejected electrons with a speed close to and above the projectile speed were investigated. This range of kinematics represents a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbc4203a81dae73a891364640e3e2201
https://doi.org/10.1103/physreva.100.032707

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Multicenter distorted-wave approach for electron-impact ionization of molecules

Autor: Esam Ali, D. H. Madison

Publikováno v: Physical Review A. 100

We have previously used the molecular three-body distorted-wave model to examine electron-impact single ionization of molecules. One of the possible weaknesses of this approach lies in the fact that the continuum electron wave functions do not depend

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04b035e8e44013deed84daafc6fddccf
https://doi.org/10.1103/physreva.100.012712

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Triple differential cross sections for electron-impact ionization of methane at intermediate energy

Autor: Andrew James Murray, Chuangang Ning, Matthew Harvey, Esam Ali, Carlos Granados, Lorenzo Ugo Ancarani, Mevlut Dogan, D. H. Madison, James Colgan, Ahmad Sakaamini

Publikováno v: Ali, E, Granados, C, Sakaamini, A, Harvey, M, Ancarani, L U, Murray, A, Dogan, M, Ning, C, Colgan, J & Madison, D 2019, ' Triple Differential Cross Sections for electron-impact ionization of methane at intermediate energy ', Journal of Chemical Physics . https://doi.org/10.1063/1.5097670

We report an experimental and theoretical investigation of electron-impact single ionization of the highest occupied molecular orbital 1t2 and the next highest occupied molecular orbital 2a1 states of CH4 at an incident electron energy of 250 eV. Tri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1374ccfc2d6029250f27fddc25a95dd8
https://pubmed.ncbi.nlm.nih.gov/31117797

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Fully differential study of ionization of H2 by p impact near velocity matching

Autor: D. Cikota, Esam Ali, R. A. Lomsadze, Michael Schulz, A. Silvus, D. H. Madison, Ahmad Hasan, B. R. Lamichhane, M. Dhital, Marcelo F. Ciappina, S. Bastola, B. Boggs

Publikováno v: Journal of Physics: Conference Series. 1412:152042

Synopsis Fully differential cross sections (FDCS) for ionization in p + H2 collisions in the region of the electron-projectile velocity matching were measured and calculated. The FDCS were found to be very sensitive to the details of the few-body dyn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::945b3274d1af1599d905c5db48d2bd34
https://doi.org/10.1088/1742-6596/1412/15/152042

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Target dependence of post-collision effects in ionization by proton impact

Autor: Michael Schulz, J. Buxton, M. Dhital, Marcelo F. Ciappina, Z. Klok, Esam Ali, S. Bastola, D. H. Madison, A. Silvus

Publikováno v: Journal of Physics: Conference Series. 1412:152006

Synopsis Double differential cross sections (DDCS) for ionization in p + Ne, Ar collisions were measured and calculated for a broad range of projectile energy losses as a function of scattering angle. PCI effects in the DDCS were found to be become i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b217900c9fa0e035f6d24b2defb5a217
https://doi.org/10.1088/1742-6596/1412/15/152006

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Triple Differential Cross Sections for electron impact ionization of methane at intermediate energy

Autor: Ahmad Sakaamini, Chuangang Ning, C Granados, Esam Ali, Lorenzo Ugo Ancarani, D. H. Madison, Andrew James Murray, Matthew Harvey, Mevlut Dogan, James Colgan

Publikováno v: Journal of Physics: Conference Series. 1412:152086

Synopsis In a joint experimental and theoretical collaboration, triple differential cross sections are presented for electron-impact single ionization of the 1t2 and 2a1 states of CH4 at an incident electron energy of 250 eV. Experimental data from t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2616a52e62432b2bea8eed29c6c45296
https://doi.org/10.1088/1742-6596/1412/15/152086

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New structures in fully differential cross sections for ionization of He by proton impact

Autor: Esam Ali, A. Silvus, S. Bastola, R. A. Lomsadze, Ahmad Hasan, M. Dhital, Marcelo F. Ciappina, Michael Schulz, B. R. Lamichhane, D. H. Madison

Publikováno v: Journal of Physics: Conference Series. 1412:152089

Synopsis Fully differential cross sections (FDCS) for ionization in p + He collisions were measured and calcu-lated for several projectile energy losses. The electron angular dependence of the FDCS reveals structures not seen in previous studies.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::61d3c864fa3fedc6dd82c08f7e6e6e26
https://doi.org/10.1088/1742-6596/1412/15/152089

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A dynamical (e,2e) investigation into the ionization of the outermost orbitals of R-carvone

Autor: M. C. A. Lopes, Darryl Jones, Chuangang Ning, Michael J. Brunger, Esam Ali, Himadri Chakraborty, Oddur Ingólfsson, D. H. Madison, F. Ferreira da Silva

Publikováno v: The Journal of Chemical Physics. 151:124306

We report an experimental and theoretical investigation into the dynamics of electron-impact ionization of R-carvone. Experimental triple differential cross sections are obtained in asymmetric coplanar kinematic conditions for the ionization of the u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f64517940063c0a876e9ab13f3bdd3f5
https://doi.org/10.1063/1.5123526

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Target dependence of post-collision effects in ionization by proton impact

Autor: Esam Ali, B. Boggs, D. Cikota, S. Bastola, D. H. Madison, Marcelo F. Ciappina, Z. Klok, Michael Schulz, J. Buxton, M. Dhital, A. Silvus

Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 52:125202

We have measured and calculated double differential cross sections for ionization of Ne and Ar by 75 keV proton impact for a broad range of fixed projectile energy losses as a function of scattering angle. Along with data obtained previously for ligh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e1078661a8209f382779f2d2734813a7
https://doi.org/10.1088/1361-6455/ab1df5

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