skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultrafast ionization study of N{sub 2} in intense linearly and circularly polarized laser fields

Abstract

A detailed investigation has been carried out of N{sub 2} molecules in intense 55 and 220 fs, linear and circular polarized, 790 nm laser pulses. Using an intensity selective scanning technique, ionization, dissociation, and dissociative ionization channels have been studied. Remarkably similar enhancements of signal with linear polarization observed for double ionization and dissociation channels demonstrate the dominance of dynamic alignment over rescattering effects. Fragmentation energies from dissociative ionization are reasonably well reproduced by classical trajectory calculations, the higher charged fragments displaying evidence of post dissociative ionization.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;  [1]
  1. Department of Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom)
Publication Date:
OSTI Identifier:
20787119
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.73.043401; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; DISSOCIATION; LASER RADIATION; MOLECULES; NITROGEN; PHOTOIONIZATION; PHOTON-MOLECULE COLLISIONS; POLARIZATION; PULSES; RESCATTERING

Citation Formats

McKenna, J, Suresh, M, Srigengan, B, Williams, I D, Bryan, W A, English, E M. L., Stebbings, S L, Newell, W R, Turcu, I C. E., Smith, J M, Divall, E J, Hooker, C J, Langley, A J, Collier, J L, Department of Physics and Astronomy, University College London, London, WC1E 6BT, and Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon., OX11 0QX. Ultrafast ionization study of N{sub 2} in intense linearly and circularly polarized laser fields. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
McKenna, J, Suresh, M, Srigengan, B, Williams, I D, Bryan, W A, English, E M. L., Stebbings, S L, Newell, W R, Turcu, I C. E., Smith, J M, Divall, E J, Hooker, C J, Langley, A J, Collier, J L, Department of Physics and Astronomy, University College London, London, WC1E 6BT, & Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon., OX11 0QX. Ultrafast ionization study of N{sub 2} in intense linearly and circularly polarized laser fields. United States. doi:10.1103/PHYSREVA.73.0.
McKenna, J, Suresh, M, Srigengan, B, Williams, I D, Bryan, W A, English, E M. L., Stebbings, S L, Newell, W R, Turcu, I C. E., Smith, J M, Divall, E J, Hooker, C J, Langley, A J, Collier, J L, Department of Physics and Astronomy, University College London, London, WC1E 6BT, and Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon., OX11 0QX. Sat . "Ultrafast ionization study of N{sub 2} in intense linearly and circularly polarized laser fields". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20787119,
title = {Ultrafast ionization study of N{sub 2} in intense linearly and circularly polarized laser fields},
author = {McKenna, J and Suresh, M and Srigengan, B and Williams, I D and Bryan, W A and English, E M. L. and Stebbings, S L and Newell, W R and Turcu, I C. E. and Smith, J M and Divall, E J and Hooker, C J and Langley, A J and Collier, J L and Department of Physics and Astronomy, University College London, London, WC1E 6BT and Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon., OX11 0QX},
abstractNote = {A detailed investigation has been carried out of N{sub 2} molecules in intense 55 and 220 fs, linear and circular polarized, 790 nm laser pulses. Using an intensity selective scanning technique, ionization, dissociation, and dissociative ionization channels have been studied. Remarkably similar enhancements of signal with linear polarization observed for double ionization and dissociation channels demonstrate the dominance of dynamic alignment over rescattering effects. Fragmentation energies from dissociative ionization are reasonably well reproduced by classical trajectory calculations, the higher charged fragments displaying evidence of post dissociative ionization.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
issn = {1050-2947},
number = 4,
volume = 73,
place = {United States},
year = {2006},
month = {4}
}