Zobrazeno 1 - 10
of 743
pro vyhledávání: '"W R, Newell"'
Autor:
T. Birkeland, Ian Williams, J. F. McCann, J. D. Alexander, Raymond B. King, D. S. Murphy, W. A. Bryan, Jason B. Greenwood, C. R. Calvert, W R Newell
Publikováno v:
Journal of Modern Optics. 56:1060-1069
The capability of intense ultrashort laser pulses to initiate, control and image vibrational wavepacket dynamics in the deuterium molecular ion has been simulated with a view to inform and direct future femtosecond pump–control–probe experiments.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::821dfc1fc8c03f9543ab1ba3fddee54d
https://doi.org/10.1080/09500340902919444
https://doi.org/10.1080/09500340902919444
Autor:
W R Newell, J. F. McCann, B. Srigengan, D. S. Murphy, Liang-You Peng, Ian Williams, John N. Wood, J. A. McKenna, W. A. Bryan, E. M. L. English, M. Suresh, S. L. Stebbings, I. C. E. Turcu, John Collier
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 40:2607-2619
The dynamics of dissociation of pre-ionized D+2 molecules using intense (1012–1015 W cm−2), ultrashort (50 fs), infrared (λ = 790 nm) laser pulses are examined. Use of an intensity selective scan technique has allowed the deuterium energy spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72344224669e9bcf3e6c1cc0172199d0
https://doi.org/10.1088/0953-4075/40/13/007
https://doi.org/10.1088/0953-4075/40/13/007
Autor:
W R Newell, C. R. Calvert, I. C. E. Turcu, John N. Wood, Ian Williams, E. M. L. English, J. F. McCann, D. S. Murphy, W. A. Bryan, Jarlath McKenna
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 40:S359-S372
A novel technique is proposed to control the dissociation mechanism of small diatomic molecules. This technique, relying upon the creation of a coherent nuclear wavepacket, uses intense (>1014 W cm−2), ultrashort (~10 fs) infrared laser pulses in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1c06b8f9d6da379f2739292b2393dc9
https://doi.org/10.1088/0953-4075/40/11/s09
https://doi.org/10.1088/0953-4075/40/11/s09
Autor:
W R Newell, Jodie Smith, Klaus Ertel, W. A. Bryan, E. J. Divall, C. R. Calvert, Ian Williams, E. M. L. English, J. A. McKenna, I. C. E. Turcu, J. F. McCann, D. S. Murphy, J. Wood, Oleg Chekhlov
Publikováno v:
Journal of Modern Optics. 54:1127-1138
Few-cycle laser pulses are used to “pump and probe” image the vibrational wavepacket dynamics of a HD+ molecular ion. The quantum dephasing and revival structure of the wavepacket are mapped experimentally with time-resolved photodissociation ima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47f4a9d5483f0518790d6182c0d11a8f
https://doi.org/10.1080/09500340601005065
https://doi.org/10.1080/09500340601005065
Autor:
C. R. Calvert, J. F. McCann, Jodie Smith, E. M. L. English, D. S. Murphy, J. Wood, Oleg Chekhlov, W R Newell, J. A. McKenna, E. J. Divall, Ian Williams, W. A. Bryan, Klaus Ertel, I. C. E. Turcu
Publikováno v:
Journal of Physics: Conference Series. 58:375-378
The vibrational wavepacket revival of a basic quantum system is demonstrated experimentally. Using few-cycle laser pulse technology, pump and probe imaging of the vibrational motion of D+2 molecules is conducted, and together with a quantum-mechanica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b307e4fafab98972d67e0842538322f4
https://doi.org/10.1088/1742-6596/58/1/085
https://doi.org/10.1088/1742-6596/58/1/085
Autor:
J. A. McKenna, O. Cheklov, E. M. L. English, W R Newell, J. Wood, C. R. Calvert, Jodie Smith, E. J. Divall, Ian Williams, I. C. E. Turcu, W. A. Bryan, Klaus Ertel
Publikováno v:
Journal of Physics: Conference Series. 58:379-382
Ultrashort intense laser pulses have been used to initiate and image a dissociating D+2nuclear wavepacket. Using a pump probe technique, the temporal evolution of the dissociation process has been observed as well as interferometric effects and signa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::440495e061bcdbdfca9f12e8d04fc650
https://doi.org/10.1088/1742-6596/58/1/086
https://doi.org/10.1088/1742-6596/58/1/086
Autor:
Michael J. Brunger, W R Newell, D C Cartwright, Laurence Campbell, P J O Teubner, Darryl Jones, Murk J. Bottema
Publikováno v:
Planetary and Space Science. 54:45-59
Electron impact excitation of vibrational levels in the ground electronic state and seven excited electronic states in O2 have been simulated for an International Brightness Coefficient-Category 2+ (IBC II+) night-time aurora, in order to predict O2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca359e87c99dd05abccf3a7386236b0e
https://doi.org/10.1016/j.pss.2005.08.007
https://doi.org/10.1016/j.pss.2005.08.007
Autor:
E. J. Divall, Ian Williams, W R Newell, C. J. Hooker, M. Suresh, A. J. Langley, W. A. Bryan, E.M.L. English, S. L. Stebbings, B. Srigengan, J. A. McKenna
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 235:216-220
Non-sequential processes in the multiple ionization of Xe and Xe + targets subject to intense femtosecond laser pulses have been investigated. A precise ratio has been determined for the direct comparison of ionization using circular and linear polar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28419273650c98b692f22879810daa24
https://doi.org/10.1016/j.nimb.2005.03.176
https://doi.org/10.1016/j.nimb.2005.03.176
Autor:
Laurence Campbell, Feng Wang, T Maddern, W. R. Newell, Michael S. Deleuze, Stefan Knippenberg, Neil A. Trout, David A. Winkler, Michael J. Brunger, Kate Nixon, Jean-Pierre Francois
Publikováno v:
Flinders University PURE
We report on the results of an exhaustive study of the valence electronic structure of norbornane (C7H12), up to binding energies of 29 eV. Experimental electron momentum spectroscopy and theoretical Green's function and density functional theory app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a303c81696d97697a564fd8bfbe99501
https://doi.org/10.1063/1.1799014
https://doi.org/10.1063/1.1799014
Publikováno v:
The European Physical Journal D - Atomic, Molecular and Optical Physics. 26:99-104
The interaction of a 60 fs 790 nm laser pulse with beams of Ar+, C+, H2 +, HD+ and D2 + are discussed. Intensities up to 1016 Wcm-2 are employed. An experimental z-scanning technique is used to resolve the intensity dependent processes in the confoca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3570a2d7fe7e6a4c6ebcbcca0e5219bd
https://doi.org/10.1140/epjd/e2003-00201-y
https://doi.org/10.1140/epjd/e2003-00201-y