Mechanism of Fusion Hindrance and Predictions of SHE Production

International audienceIt is shown that in the encounter of two incident ions the system quickly starts to fill out the neck crevice of the di-nucleus system to form a super-deformed mono-nucleus. The probability of forming the spherical compound nucleus is obtained, starting with the super-deformed nucleus, with the dissipation-fluctuation dynamics, which gives rise to an extremely small fusion probability. With the statistical theory of decay, survival probability of the compound nucleus is calculated. Examples of calculated excitation functions for Super-Heavy Element(SHE) are given