Monte Carlo Investigation on the Average Prompt Neutron Multiplicity as a Function of the Total Kinetic Energy and Mass of the Fragments from 252Cf Spontaneous Fission

2013 ◽  
Vol 174 (1) ◽  
pp. 103-108 ◽  
Author(s):  
David Regnier ◽  
Olivier Litaize ◽  
Olivier Serot
Keyword(s):  
Monte Carlo ◽  
Kinetic Energy ◽  
Spontaneous Fission ◽  
Neutron Multiplicity ◽  
Total Kinetic Energy ◽  
Prompt Neutron ◽  
Monte Carlo Investigation

scholarly journals Monte Carlo simulation of the measurement by the 2E technique of the average prompt neutron multiplicity as a function of the mass of fragments from thermal neutron-induced fission of 239Pu

2021 ◽  
Vol 68 (1 Jan-Feb) ◽  
Author(s):  
Modesto Montoya ◽  
Oliver Páucar ◽  
A. Obregón ◽  
A. Aponte
Keyword(s):  
Monte Carlo ◽  
Standard Deviation ◽  
Kinetic Energy ◽  
Thermal Neutron ◽  
Neutron Multiplicity ◽  
Total Kinetic Energy ◽  
Prompt Neutron ◽  
Fragment Mass ◽  
Induced Fission ◽  
Experimental Values

Using a Monte Carlo method, we simulate the measurement, by the 2E technique, of the average prompt neutron multiplicity as a function of the mass of fragments from the thermal neutron-induced fission of 239Pu. The input data for the simulation, associated with the primary fragment mass (A), consist of the yield (Y), the distribution of the total kinetic energy characterized by its average ((TKE) ̅) and its standard deviation (σ_TKE), the average prompt neutron multiplicity (ν ̅_s, a sawtooth approach of experimental data), and the slope of neutron multiplicity against total kinetic energy (dν_s/d<TKE>). The output data, associated with the simulated as the fragment mass measured by the 2E technique (µ), consist of the yield (y), the distribution of the total kinetic energy characterized by its average ((tke) ̅) and its standard deviation (σ_tke), and the average prompt neutron multiplicity (ν ̅_µ). In the mass regions A≈115 and A>150, ν ̅_µ is higher than ν ̅_s. This result suggests that, in those mass regions, the 2E experimental values associated with the average neutron multiplicity are overestimated, referred to the corresponding to the primary fragments.

Total Kinetic Energy Measurements for Spontaneous Fission of $^{255,\,256,\,258}$Rf

2018 ◽  
Vol 49 (3) ◽  
pp. 605 ◽  
Author(s):  
P. Mošať ◽  
S. Antalic ◽  
F.P. Heßberger ◽  
D. Ackermann ◽  
B. Andel ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Spontaneous Fission ◽  
Total Kinetic Energy

scholarly journals Influencia de la emisión de neutrones en la medición por el método de la doble energía de la distribución de masa y energía cinética de los fragmentos de la fisión espontánea del 252Cf

2019 ◽  
pp. 15-19
Keyword(s):  
Monte Carlo ◽  
Standard Deviation ◽  
Monte Carlo Method ◽  
Kinetic Energy ◽  
Energy Distribution ◽  
Energy Method ◽  
Spontaneous Fission ◽  
Neutron Emission ◽  
Mass Energy ◽  
San Marcos

Influencia de la emisión de neutrones en la medición por el método de la doble energía de la distribución de masa y energía cinética de los fragmentos de la fisión espontánea del 252Cf Influence of neutron emission on the measurement by double-energy method of mass and kinetic energy distribution of the fragments from spontaneous fission of 252Cf Modesto Montoya, Carlos Romero y Justo Rojas Instituto Peruano de Energía Nuclear Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Rímac, Lima Universidad Nacional Mayor de San Marcos, Av. Venezuela, s/n, Callao DOI: https://doi.org/10.33017/RevECIPeru2011.0003/ RESUMEN El método de doble energía ha sido usado por varios autores para medir la distribución de masa (A*) y energía cinética total de los fragmentos complementarios (EKT*) de la fisión espontánea del 252Cf, encontrándose un ensanchamiento de la desviación estándar de distribución de EKT* (σEKT*) en la región cercana a la simetría de masas (A* = 226). Usando el método Monte Carlo, nosotros mostramos que ese ensanchamiento se debe que para cada valor de A* se produce la superposición de distribuciones de EKT* correspondientes a fragmentos primarios con dos o más masas vecinas, respectivamente. Descriptores: fision espontánea, 252Cf, fragmentos distribución masa energía. ABSTRACT The double energy method has been used by several authors to measure the mass (A *) and total kinetic energy (EKT *) distribution of the complementary fragments from spontaneous fission of 252Cf, finding an broadening of the distribution standard deviation EKT * (σEKT *) in the region near mass symmetry (A * = 226). Using Monte Carlo method, we show that this broadening is because for each value of A * an overlapping of distributions EKT * for primary fragments with two or more neighboring masses, respectively, are produced. Keywords: spontaneous fission 252Cf, fragments distribution mass energy.

scholarly journals K isomerism in Rf255 and total kinetic energy measurements for spontaneous fission of Rf255,256,258

2020 ◽  
Vol 101 (3) ◽  
Author(s):  
P. Mosat ◽  
F. P. Heßberger ◽  
S. Antalic ◽  
D. Ackermann ◽  
B. Andel ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Spontaneous Fission ◽  
Total Kinetic Energy
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