scholarly journals Improvements to the macroscopic-microscopic approach of nuclear fission

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Marc Verriere ◽  
Matthew Ryan Mumpower
Keyword(s):  
Nuclear Fission ◽  
Microscopic Approach

scholarly journals Macroscopic-microscopic approach to the nuclear fission process

2007 ◽  
Author(s):  
Aleksandra Kelić ◽  
Maria Valentina Ricciardi ◽  
Karl-Heinz Schmidt
Keyword(s):  
Nuclear Fission ◽  
Microscopic Approach ◽  
Fission Process

MICROSCOPIC APPROACH TO NUCLEAR FISSION

2010 ◽  
Vol 19 (04) ◽  
pp. 521-531
Author(s):  
K. DIETRICH ◽  
J.-J. NIEZ ◽  
J.-F. BERGER
Keyword(s):  
Time Scales ◽  
Compound Nucleus ◽  
Microscopic Theory ◽  
Nuclear Fission ◽  
Equation Of Motion ◽  
Markov Approximation ◽  
Microscopic Approach ◽  
Canonical Distribution ◽  
Physical Assumption ◽  
Reduced Density

A microscopic theory for the decay of a compound nucleus is presented which is formulated in the spirit of transport theories. Its basic physical assumption is the existence of two time scales, a rapid one concerning the creation of intrinsic excitations and a slow one controlling the change of the nuclear shape. This fact is used in the derivation of an equation of motion for the reduced density by applying the so-called Markov approximation. A canonical distribution of the system with regard to the intrinsic excitations at a given shape is assumed as an approximation and a temperature T(q, t) depending on the nuclear shapes and time t is defined so as to render the canonical distribution as realistic as possible.

Parity violation in nuclear fission

1980 ◽  
Vol 131 (7) ◽  
pp. 329 ◽  
Author(s):  
G.V. Danilyan
Keyword(s):  
Parity Violation ◽  
Nuclear Fission

Proposed Solutions to Achieve Nuclear Fusion

Engevista ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. 1496
Author(s):  
Relly Victoria Virgil Petrescu ◽  
Raffaella Aversa ◽  
Antonio Apicella ◽  
Florian Ion Petrescu
Keyword(s):  
Nuclear Reactor ◽  
Nuclear Reactions ◽  
Nuclear Fusion ◽  
Nuclear Fission ◽  
Light Nuclei ◽  
Fast Neutrons ◽  
Fusion Reactions ◽  
Nuclear Fusion Reactions ◽  
The Masses ◽  
Fusion Products

Despite research carried out around the world since the 1950s, no industrial application of fusion to energy production has yet succeeded, apart from nuclear weapons with the H-bomb, since this application does not aims at containing and controlling the reaction produced. There are, however, some other less mediated uses, such as neutron generators. The fusion of light nuclei releases enormous amounts of energy from the attraction between the nucleons due to the strong interaction (nuclear binding energy). Fusion it is with nuclear fission one of the two main types of nuclear reactions applied. The mass of the new atom obtained by the fusion is less than the sum of the masses of the two light atoms. In the process of fusion, part of the mass is transformed into energy in its simplest form: heat. This loss is explained by the Einstein known formula E=mc2. Unlike nuclear fission, the fusion products themselves (mainly helium 4) are not radioactive, but when the reaction is used to emit fast neutrons, they can transform the nuclei that capture them into isotopes that some of them can be radioactive. In order to be able to start and to be maintained with the success the nuclear fusion reactions, it is first necessary to know all this reactions very well. This means that it is necessary to know both the main reactions that may take place in a nuclear reactor and their sense and effects. The main aim is to choose and coupling the most convenient reactions, forcing by technical means for their production in the reactor. Taking into account that there are a multitude of possible variants, it is necessary to consider in advance the solutions that we consider them optimal. The paper takes into account both variants of nuclear fusion, and cold and hot. For each variant will be mentioned the minimum necessary specifications.

Delayed nuclear fission

1999 ◽  
Vol 30 (6) ◽  
pp. 666 ◽  
Author(s):  
V. I. Kuznetsov
Keyword(s):  
Nuclear Fission
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