Abstract
The parametrization of experimental data (i.e. data known with errors) by the type-III Padé approximant (PA-III) technique is treated. Iterative linearized procedures for finding the PA parameters are proposed and their convergence verified. The methods proposed are shown to exhibit very rapid convergence compared with alternative methods. The methods are demonstrated to be effective when applied to describing the angular dependence of differential cross sections and analyzing powers of the elastic scattering of two nuclei and to parametrizing the low-energy electron-Krypton elastic scattering if explicit allowance is made for the long range polarization force. A subsequent paper in this series will be devoted to the energy-dependent phase shift analysis of low-energy2H-4He scattering.
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References
Lawson C. L., Hanson R. J.: Solving Least Squares Problems. Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1974.
Baker G. A. Jr., Gammel J. L.: The Padé Approximants in Theoretical Physics. Academic Press, London, 1970.
Baker G. A. Jr.: The Essentials of Padé Approximants. Academic Press, New York, 1975.
Graves-Morris P. R.: Padé Approximants and Their Applications. Academic Press, London, 1973.
Baker G. A. Jr., Graves-Morris P. R.: Padé Approximants. Addison-Wesley Publ. Co., London, 1981.
Zinn-Justin J.: Phys. Reports C1 (1970) 56.
Jones W. B., Thorn W. J.: Continued Fractions, Analytic Theory and Applications. Addison-Wesley, Reading (Mass.), 1980.
Wyutack L.: Padé Approximation and Its Applications. Springer Lecture Notes in Mathematics, Vol. 765, Springer, Berlin, 1979.
Nichitiu F.: Rev. Roum. Phys.27 (1982) 15.
Vinogradov V. N., Gay E. V., Robotnov N. S.: Analytical approximation in nuclear and neutron physics. Energoatomizdat, Moscow, 1987 (in Russian).
Krasnopol'sky V. M., Chlebnikov S. Y.:in Theory of the quantum systems with the strong interaction. Kalinin, 1980, p. 80 (in Russian).
Krasnopol'sky V. M., Kukulin V. L., Horáček J.: Czech. J. Phys. B35 (1985) 805.
Hartt K., Yidana P.: Phys. Rev. C31 (1985) 1105.
Yidana P., Hartt K.: private communication.
Miller K.: SIAM J. Appl. Math.18 (1970) 346.
Jenny B. et al.: Nucl. Phys. A397 (1983) 61.
Nichitiu F.: Analiza de Faza in Fisica Interactiilor Nucleare. Editura Academici, Bucuresti, 1980.
Sasakawa T., Horáček J.: J. Phys. B15 (1982) L 169.
Mc Eachran R. R., Stauffer A. D.: J. Phys. B17 (1984) 2507.
Amado R. D. et al.: Phys. Lett B79 (1978) 368.
Pun Casavant D. D., Sowinski J. G., Knutson L. D.: Phys. Lett. B154 (1985) 6.
Horáček J. et al.: Phys. Letters B172 (1986) 1.
Ericson T. E. O.: Nucl. Phys. A416 (1984) 281.
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The authors are indebted to Prof. Kenneth Hartt for informative discussion and for comparison of various attempts to calculate the statistical Padé approximants.
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Krasnopol'sky, V.M., Kukulin, V.I. & Horáček, J. Padé approximant technique for processing scattering data I. Theory, models and parametrization of the scattering data. Czech J Phys 39, 593–613 (1989). https://doi.org/10.1007/BF01597902
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DOI: https://doi.org/10.1007/BF01597902