Мethod of time analysis is generalized in elastic scattering of neutrons by nuclei near the resonance, distorted by unresonant background. The role of phase parameter, which describes a spaсe-time shift between neutrons and emitted particles in the laboratory system, is investigated. The calculations of cross sections are presented for elastic scattering of neutrons by nuclei 28 Si, 63 Cu, 64 Ni, 73 Ge with the use of new method of time analysis of nuclear reactions with the isolated compound-nucleus resonances.
Представлено расширение приближения пространственно-временно́го анализа, который ранее использовался для описания бинарных реакций упругого рассеяния нуклонов на ядрах и реакций столкновения легких ионов, на рассмотрение когерентных эффектов в тяжело-ионных столкновениях с тремя частицами в конечном канале реакции, две из которых детектируются. Введено понятие корректирующей фазы , впервые полученной благодаря пространственно-временно́му подходу. В приближении случайной фазы рассмотрен анализ расчетных выражений в зависимости от степени перекрытия резонансов в компаунд-ядерной структуре. Ключевые слова: корректирующая фаза, когерентные эффекты, пространственно-временно́й сдвиг, компаунд-ядерные резонансы.
It is shown, that the exponential decrease of the energy spectra of the reaction final fragments with increasing energy, which does not depend from the fragment's type, targets, projectiles and projectile energies, and which sometimes accompanied slight oscillations, can be explained by the unique phenomenon of time resonances. These time resonances correspond to decay of intermediate excited nuclear composite system. For the first time, expressions for the decay rate and the probability of survival of such system as a function on time are obtained. Inclusive spectra for protons p and helium isotopes 3 He in high-energy nuclear reactions 20 Ne + 238 U → p + X (2.1 GeV/nucleon) and 20 Ne + 238 U → 3 He + X' (2.1 GeV/nucleon) are calculated.PACS numbers: 25.00. 00, 25.90.+k, 03.65 Keywords: exponential decreasing of the inclusive spectra, time resonances, non-exponential or resonant decay of stable nuclear clots * Electronic address:
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