caa a22 4500 469066059 CHVBK 20180323132909.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02726996 doi (NATIONALLICENCE)springer-10.1007/BF02726996 Resonant behaviour of the scattering phase shift [Elektronische Daten] [G. Raşseev, O. Atabek] Summary: The relationship between the commonly used definitions for a resonance referring either to the asymptotic features of the scattering (real energy) or to the Gamow-Siegert (complex energy) wavefunctions is studied. In a one-channel model this can be achieved by analytical continuation of the scattering amplitude, asymptotic phase shift and collisional time delay functions in the complex energy plane. A separate study of the real and imaginary parts of the scattering functions brings new and unexpected features which, particularly in the near resonanceregion, can be used as keys of a more accurate determination of resonance characteristics,i.e. energy and lifetime. In addition, in the close vicinity of the resonance the predictions of the model go beyond an isolated resonance approximation including background and overlapping resonances. Società Italiana di Fisica, 1992 General theory of scattering nationallicence S -matrix theory nationallicence General theories and models (including statistical theories nationallicence transition state nationallicence stochastic and trajectory models, etc nationallicence Raşseev G. Laboratoire de Photophysique Moléculaire, Université de Paris-Sud, Bât. 213, 91405, Orsay, France aut Atabek O. Laboratoire de Photophysique Moléculaire, Université de Paris-Sud, Bât. 213, 91405, Orsay, France aut Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/4(1992-04-01), 463-481 107:4<463 1992 107 40764 https://doi.org/10.1007/BF02726996 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02726996 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Raşseev G. Laboratoire de Photophysique Moléculaire, Université de Paris-Sud, Bât. 213, 91405, Orsay, France aut NATIONALLICENCE 700 1- Atabek O. Laboratoire de Photophysique Moléculaire, Université de Paris-Sud, Bât. 213, 91405, Orsay, France aut NATIONALLICENCE 773 0- Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/4(1992-04-01), 463-481 107:4<463 1992 107 40764 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer