Control of polarized iodine atom branching ratio in NaI photodissociation

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.023402· OSTI ID:20650098

Hosseini, Babak H ^[1]; Sadeghpour, H R ^[1]; Balakrishnan, N ^[2]

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1. ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138 (United States)
2. Department of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154 (United States)

We report branching ratios between the ground and excited states of iodine atoms in the photodissociation of sodium iodide. We employ wave packet propagation techniques to study the optimal production of polarized iodine atoms and find experimentally realizable laser parameters to control the outcome. Application of a learning algorithm shows that the product branching can be controlled by suitably varying the time delay, the chirp, and the relative phase of the pump and control laser pulses. Periodic modulation of the polarized iodine atom branching ratio as a function of the delay between the firing of the two ultrashort laser pulses provides interesting insights into the photodissociation process.

• OSTI ID: 20650098
• Journal Information: Physical Review. A, Vol. 71, Issue 2; Other Information: DOI: 10.1103/PhysRevA.71.023402; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALGORITHMS
ATOMS
BRANCHING RATIO
CONTROL
EXCITED STATES
GROUND STATES
IODINE
LASER RADIATION
MODULATION
PERIODICITY
PHOTON-MOLECULE COLLISIONS
POLARIZATION
PULSES
SODIUM IODIDES
TIME DELAY
VELOCITY
WAVE PACKETS