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Photoionization of Singly Ionized Atomic and Molecular Nitrogen. Mohammad M Alshorman ISMO, CNRS & Univ. Paris-Sud 11 (Directed by: Jean Marc Bizau). JOURNEES SCIENTIFIQUES DE L’EDOM 2012. Outline Interests. Merged-beam experiment: N + Simulation:

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slide1

Photoionization of Singly Ionized Atomic and Molecular Nitrogen.

Mohammad M Alshorman

ISMO, CNRS & Univ. Paris-Sud 11

(Directed by: Jean Marc Bizau)

JOURNEES SCIENTIFIQUES DE L’EDOM 2012

slide2

Outline

  • Interests.
  • Merged-beam experiment: N+
  • Simulation:
      • simulation of ions trajectories in MAIA setup to improve the intensity of the ion beam and overlap between the photon and ion.
  • Preliminary results of N2+.
  • Future Work.
slide3

Interests

  • Fundamental:

Nice tool to study electron correlation effects.

  • Plasmas diagnostics and modeling:

Spectroscopic information: ionization thresholds, excitation energies

 Interpretation of the observations of the X-ray observatories (Chandra, XMM Newton).

  • Dynamical information: Absolute PI cross sections, oscillator strengths.
  • Theoretical interest:
  • The majority of this experimental data has been benchmarked with state-of-the-art theoretical methods as R-matrix and MCDF (Multi-Configurational Dirac–Fork calculations) calculations.
slide4

Merged-Beam Set-Up (MAIA) Endstation

on SOLEIL Undulator PLEIADESBeamline

ECRIS: electron cyclotron ion source, E: einzel lens, St: set of horizontal and vertical steerers, S: collimating slits, FC: Faraday cup, ED: electrostatic deflector, IR: interaction region, EQ: electrostatic quadrupole, SR: synchrotron radiation, PD: photodiode.

slide5

Results

The distribution for 1s22s22p23P,1D,1S and 1s22s2p35So are

0.54, 0.11, 0.03, 0.32 respectively.

slide7

Future work.

  • We will continue with k-shell photoionization for N2+ and N3+ soon, at the end of this month.
  • We will extend our work with isonuclear sequence for O+ions.
  • -We will try molecular Nitrogen with a new modified trap.
  • I will continue the simulation until the interaction region.
acknowledgements
Acknowledgements

Jean-Marc Bizau, D. Cubaynes, S. Guilbaud, N. El Hassan

ISMO, Univ. Orsay, France

C. Miron , C. Nicolas, X. Liu, E. Robert, A. Giuliani

Synchrotron SOLEIL, St Aubin, France

C. Blancard

CEA Bruyères-le-Châtel, France

J. Lemaire

LCP, Univ. Orsay, France

R. Thissen

IPAG, Université J. Fourier, Genoble, France

M. Gharaibeh

Jordan University, Irbid, Jordan

B M McLaughlin

CTAMOP, ITAMP, Belfast, UK.

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