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One- and two-photon detachment of O−

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Génévriez, Matthieu [UCL] Urbain, Xavier [UCL] Dochain, Arnaud [UCL] Cyr, Alain Dunseath, Kevin M. Terao-Dunseath, Mariko

Cross sections for one- and two-photon detachment of O−(1s22s22p5 2Po) have been determined in a joint experimental and theoretical study. The absolute measurement is based on the animated-crossed-beam technique,which is extended to the case of pulsed lasers, pulsed ion beams, and multiphoton detachment. The ab initio calculations employ R-matrix Floquet theory, with simple descriptions of the initial bound state and the residual oxygen atom which reproduce well the electron affinity and ground-state polarizability. For one-photon detachment, the measured and computed cross sections are in good mutual agreement, departing significantly from previous reference experiments and calculations. The generalized two-photon detachment cross section, measured at the Nd:YAG laser wavelength, is in good agreement with the R-matrix Floquet calculations. Long-standing discrepancies between theory and experiment are thus resolved.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 2016
Language Anglais
Journal information "Physical Review A" - Vol. 94, no.2, p. 023407-1-023407-11 (2016)
Peer reviewed yes
issn 2469-9926
e-issn 2469-9934
Publication status Publié
Affiliation UCL - SST/IMCN/NAPS - Nanoscopic Physics
Links
  1. Branscomb Lewis M., Smith Stephen J., Experimental Cross Section for Photodetachment of Electrons fromH−andD−, 10.1103/physrev.98.1028
  2. Branscomb Lewis M., Burch David S., Smith Stephen J., Geltman Sydney, Photodetachment Cross Section and the Electron Affinity of Atomic Oxygen, 10.1103/physrev.111.504
  3. S. J. Smith, Proceedings of the Fourth International Conference on Ionization Phenomena in Gases, Uppsala, 17–21 August 1959 (1960)
  4. Branscomb L. M., Smith S. J., Tisone G., Oxygen Metastable Atom Production Through Photodetachment, 10.1063/1.1697230
  5. Lee L. C., Smith G. P., Photodissociation and photodetachment of molecular negative ions. VI. Ions in O2/CH4/H2O mixtures from 3500 to 8600 Å, 10.1063/1.437690
  6. Hlavenka P., Otto R., Trippel S., Mikosch J., Weidemüller M., Wester R., Absolute photodetachment cross section measurements of the O− and OH− anion, 10.1063/1.3080809
  7. Seman Michael L., Branscomb Lewis M., Structure and Photodetachment Spectrum of the Atomic Carbon Negative Ion, 10.1103/physrev.125.1602
  8. Haeffler G, Hanstorp D, Kiyan I Yu, Ljungblad U, Andersen H H, Andersen T, Photodetachment cross sections for the S bound state of the negative carbon ion, 10.1088/0953-4075/29/14/014
  9. Kristensen P., Andersen H. H., Balling P., Steele L. D., Andersen T., Photodetachment study ofB−ions: The influence of the first excited boron state, 10.1103/physreva.52.2847
  10. Burch D. S., Smith S. J., Branscomb L. M., Photodetachment ofO2−, 10.1103/physrev.112.171
  11. Zatsarinny Oleg, Bartschat Klaus, Low-energy photodetachment ofO−, 10.1103/physreva.73.022714
  12. Stapelfeldt H, Brink C, Haugen H K, Two-photon detachment cross sections for O-, Cu-, Ag-and Au-at 1064 nm, 10.1088/0953-4075/24/18/001
  13. Robinson E. J., Geltman S., Single- and Double-Quantum Photodetachment of Negative Ions, 10.1103/physrev.153.4
  14. Gribakin G. F., Kuchiev M. Yu., Multiphoton detachment of electrons from negative ions, 10.1103/physreva.55.3760
  15. Génévriez Matthieu, Urbain Xavier, Animated-beam measurement of the photodetachment cross section ofH−, 10.1103/physreva.91.033403
  16. Burke P G, Francken P, Joachain C J, R-matrix-Floquet theory of multiphoton processes, 10.1088/0953-4075/24/4/005
  17. Dorr M, Terao-Dunseath M, Purvis J, Noble C J, Burke P G, Joachain C J, R-matrix-Floquet theory of multiphoton processes. II. Solution of the asymptotic equations in the velocity gauge, 10.1088/0953-4075/25/12/011
  18. Burke Philip George, R-Matrix Theory of Atomic Collisions, ISBN:9783642159305, 10.1007/978-3-642-15931-2
  19. Lambropoulos P., Topics on Multiphoton Processes in Atoms, Advances in Atomic and Molecular Physics Volume 12 (1976) ISBN:9780120038121 p.87-164, 10.1016/s0065-2199(08)60043-3
  20. Lecompte C., Mainfray G., Manus C., Sanchez F., Laser temporal-coherence effects on multiphoton ionization processes, 10.1103/physreva.11.1009
  21. MANDEL L., WOLF E., Coherence Properties of Optical Fields, 10.1103/revmodphys.37.231
  22. Naji A, Olamba K, Chenu J P, Szücs S, Chibisov M, Brouillard F, Associative ionization in collisions of with and, 10.1088/0953-4075/31/13/014
  23. Brouillard F, Defrance P, Animated Crossed Beams for the Measurement of Electron Impact Ionisation, 10.1088/0031-8949/1983/t3/015
  24. Defrance P, Brouillard F, Claeys W, Wassenhove G Van, Crossed beam measurement of absolute cross sections: an alternative method and its application to the electron impact ionisation of He+, 10.1088/0022-3700/14/1/012
  25. Blangé J J, Urbain X, Rudolph H, Dijkerman H A, Beijerinck H C W, Heideman H G M, Wavelength-dependent photodissociation as a probe for vibrational energy distributions in molecular ions, 10.1088/0953-4075/29/13/013
  26. R. N. Bracewell, The Fourier Transform and Its Applications (2000)
  27. R. D. Guenther, Modern Optics (1990)
  28. Imaging in Molecular Dynamics : Technology and Applications (A User's Guide), ISBN:9780511535437, 10.1017/cbo9780511535437
  29. Lawson Charles L., Hanson Richard J., Solving Least Squares Problems, ISBN:9780898713565, 10.1137/1.9781611971217
  30. A. N. Tikhonov, Solutions of Ill-posed Problems (1977)
  31. Hansen Per Christian, Analysis of Discrete Ill-Posed Problems by Means of the L-Curve, 10.1137/1034115
  32. Terao-Dunseath M, Dunseath K M, R-matrix Floquet theory for laser-assisted electron-atom scattering, 10.1088/0953-4075/35/1/309
  33. Alpher Ralph A., White Donald R., Optical Refractivity of High-Temperature Gases. I. Effects Resulting from Dissociation of Diatomic Gases, 10.1063/1.1705906
  34. Clementi Enrico, Roetti Carla, Roothaan-Hartree-Fock atomic wavefunctions, 10.1016/s0092-640x(74)80016-1
  35. Lan Vo Ky, Dourneuf M Le, Burke P G, Atomic polarizabilities and polarized pseudo-states in the multiconfigurational approach. I. Theory and application to C, N and O, 10.1088/0022-3700/9/7/007
  36. Blondel C., Delsart C., Valli C., Yiou S., Godefroid M. R., Van Eck S., Electron affinities of16O,17O,18O,the fine structure of16O−,and the hyperfine structure of17O−, 10.1103/physreva.64.052504
  37. Pendergrast D. M., Yukich J. N., Observed Landau structure in photodetachment from trappedO−, 10.1103/physreva.67.062721
  38. Neumark D. M., Lykke K. R., Andersen T., Lineberger W. C., Laser photodetachment measurement of the electron affinity of atomic oxygen, 10.1103/physreva.32.1890
  39. Suzuki Takanori, Kasuya Takahiro, Optogalvanic study of photodetachment ofO−near threshold, 10.1103/physreva.36.2129
  40. Wigner Eugene P., On the Behavior of Cross Sections Near Thresholds, 10.1103/physrev.73.1002
  41. O'Malley Thomas F., Spruch Larry, Rosenberg Leonard, Modification of Effective‐Range Theory in the Presence of a Long‐Range (r−4) Potential, 10.1063/1.1703735
  42. Oana C. Melania, Krylov Anna I., Cross sections and photoelectron angular distributions in photodetachment from negative ions using equation-of-motion coupled-cluster Dyson orbitals, 10.1063/1.3231143
  43. Miecznik Gregory, Greene Chris H., Calculation of near-thresholdO−photodetachment, including fine-structure effects, 10.1103/physreva.53.3247
  44. Chase Robert L., Kelly Hugh P., Many-Body Calculation of the Photodetachment Cross Section ofO−, 10.1103/physreva.6.2150
  45. Henry Ronald J. W., Elastic Scattering from Atomic Oxygen and Photodetachment fromO−, 10.1103/physrev.162.56
  46. Hall J. L., Siegel M. W., Angular Dependence of the Laser Photodetachment of the Negative Ions of Carbon, Oxygen, and Hydrogen, 10.1063/1.1668743
  47. Breyer F., Frey P., Hotop H., High resolution photoelectron spectrometry of negative ions: Fine-structure transitions in O? and S? photodetachment, 10.1007/bf01408966
  48. Hanstorp D., Bengtsson C., Larson D. J., Angular distributions in photodetachment fromO−, 10.1103/physreva.40.670
  49. Cavanagh S J, Gibson S T, Lewis B R, Photodetachment of O−from threshold to 1.2 eV electron kinetic energy using velocity-map imaging, 10.1088/1742-6596/212/1/012034
  50. Gribakin G F, Kuchiev M Yu, Multiphoton detachment from negative ions: new theory versus experiment, 10.1088/0953-4075/30/19/005
Bibliographic reference Génévriez, Matthieu ; Urbain, Xavier ; Dochain, Arnaud ; Cyr, Alain ; Dunseath, Kevin M. ; et. al. One- and two-photon detachment of O−. In: Physical Review A, Vol. 94, no.2, p. 023407-1-023407-11 (2016)
Permanent URL http://hdl.handle.net/2078.1/176213