|Commenced in January 2007||Frequency: Monthly||Edition: International||Publications Count: 29110|
Total cross section of helium atom photo-ionization by weak short pulse is calculated using the variant of trajectory method, developed in our earlier work. The method enables simple estimation of total ionization probability (or cross section) without integration of differential one.
 A. B. Bichkov, A. A. Mityureva, V. V. Smirnov. One scheme of transition probability evaluation. World Academy of Science, Engineering and Technology, 2011, issue 59, p. 930-933.
 V. V. Smirnov. On a Trajectory Method for Evaluating the Transition Probability in a Quantum System. Russian Journal of Physical Chemistry B, 2012, v. 6, No. 2, p. 249–253.
 A. B. Bichkov, V. V. Smirnov. Path integral based transition probability evaluation in a quantum system with diagonal density matrix of the final state. J. Phys. A: Math. and Theor., 2013, v. 46, 015303 (8pp).
 A. B. Bichkov and V. V. Smirnov. Evaluation of the helium photo-ionization probability from the interaction with strong ultrashort laser fields, based on the trajectory method. Laser Phys. 2013, v. 23, 055302 (6pp).
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