scholarly journals Measurement of relative isotopic yield distribution of even-even fission fragments from U235 ( nth,f ) following γ -ray spectroscopy

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Aniruddha Dey ◽  
D. C. Biswas ◽  
A. Chakraborty ◽  
S. Mukhopadhyay ◽  
A. K. Mondal ◽  
...  
Keyword(s):  
Yield Distribution ◽  
Fission Fragments ◽  
Γ Ray

scholarly journals Implementing and testing theoretical fission fragment yields in a Hauser-Feshbach statistical decay framework

2018 ◽  
Vol 169 ◽  
pp. 00006 ◽  
Author(s):  
Patrick Jaffke ◽  
Peter Möller ◽  
Ionel Stetcu ◽  
Patrick Talou ◽  
Christelle Schmitt
Keyword(s):  
Kinetic Energy ◽  
Potential Energy ◽  
Potential Energy Surface ◽  
Fission Fragment ◽  
Energy Surface ◽  
Prompt Neutron ◽  
Fission Fragments ◽  
Statistical Decay ◽  
Γ Ray ◽  
The Impact

We implement fission fragment yields, calculated using Brownian shape-motion on a macroscopic-microscopic potential energy surface in six dimensions, into the Hauser-Feshbach statistical decay code CGMF. This combination allows us to test the impact of utilizing theoretically-calculated fission fragment yields on the subsequent prompt neutron and γ-ray emission. We draw connections between the fragment yields and the total kinetic energy TKE of the fission fragments and demonstrate that the use of calculated yields can introduce a difference in the 〈TKE〉 and, thus, the prompt neutron multiplicity v, as compared with experimental fragment yields. We deduce the uncertainty on the 〈TKE〉 and v from this procedure and identify possible applications.

γ-ray spectroscopy of fission fragments produced inPb208(O18,f)

2015 ◽  
Vol 92 (2) ◽  
Author(s):  
P. Banerjee ◽  
S. Ganguly ◽  
M. K. Pradhan ◽  
Md. Moin Shaikh ◽  
H. P. Sharma ◽  
...  
Keyword(s):  
Fission Fragments ◽  
Γ Ray

scholarly journals Effects of the nuclear structure of fission fragments on the high-energy prompt fission γ -ray spectrum in U235(nth,f)

2019 ◽  
Vol 100 (4) ◽  
Author(s):  
H. Makii ◽  
K. Nishio ◽  
K. Hirose ◽  
R. Orlandi ◽  
R. Léguillon ◽  
...  
Keyword(s):  
Nuclear Structure ◽  
High Energy ◽  
Fission Fragments ◽  
Γ Ray ◽  
Prompt Fission

scholarly journals Using CGMF to estimate corrections for fission yields measured via γ-ray spectroscopy

2020 ◽  
Vol 242 ◽  
pp. 03003
Author(s):  
P. Jaffke ◽  
P. Talou ◽  
M. Devlin ◽  
N. Fotiades
Keyword(s):  
Fission Product ◽  
Nuclear Structure ◽  
Fission Products ◽  
Spin Distribution ◽  
Product Yields ◽  
Fission Fragments ◽  
Fission Product Yields ◽  
Γ Ray ◽  
The Impact ◽  
Fission Yields

Fission product yields have been inferred using γ-ray spectroscopy for several decades. Typically, these efforts have focused on even-Z even-A fission products as their nuclear structure are less complicated. To further simplify the situation, it is often assumed that no side-feeding to the ground-state occurs and multiplicity cuts have a negligible effect on the inferred yields. Using CGMF, a Hauser-Feshbach statistical decay model for the primary fission fragments, we estimate the impact of these assumptions and determine corrections for specific fission product yields. We report on these corrections and investigate their sensitivity to various nuclear parameters, specifically the spin distribution of the fission fragments and the assumed nuclear structure. Our results indicate that even in the simplest of cases, say the 2+ → 0+ transitions in even-Z even-A fragments, average level corrections are on the order of 75%.

scholarly journals γ-ray spectroscopy of fission fragments from the cold-neutron235U induced fission with EXILL

2013 ◽  
Vol 62 ◽  
pp. 01006
Author(s):  
T. Konstantinopoulos ◽  
A. Astier ◽  
C. Petrache ◽  
A. Abudra ◽  
R. Bontemps ◽  
...  
Keyword(s):  
Fission Fragments ◽  
Induced Fission ◽  
Γ Ray

Radiolysis of water vapor with fission fragments

1968 ◽  
Vol 46 (24) ◽  
pp. 3773-3778 ◽  
Author(s):  
A. W. Boyd ◽  
O. A. Miller
Keyword(s):  
Energy Transfer ◽  
Water Vapor ◽  
Linear Energy Transfer ◽  
Hydrogen Yield ◽  
Fission Fragments ◽  
Γ Ray ◽  
Limiting Value

Water vapor, and mixtures of water vapor with radical and electron scavengers, have been irradiated with fission fragments at temperatures from 170 to 365 °C and densities from 1–50 mg/ml. The unimolecular hydrogen yield is the same as in γ-ray irradiations. In D2O–C6H12 mixtures the HD yield and HD/H2 ratio are lower than in γ-ray irradiations and N2O and SF6 have little effect. The HD yield reaches a limiting value (G(HD) ~4) with increasing linear energy transfer suggesting that a fraction of the D atoms formed are hot.

scholarly journals Lifetime measurement around 132Sn with the ν-Ball array

2020 ◽  
Vol 1643 (1) ◽  
pp. 012135
Author(s):  
G Häfner ◽  
R Lozeva ◽  
A Blazhev ◽  
R L Canavan ◽  
D Etasse ◽  
...  
Keyword(s):  
High Resolution ◽  
Fast Neutron ◽  
Scintillation Detectors ◽  
Tandem Accelerator ◽  
Lifetime Measurements ◽  
Fission Fragments ◽  
Hpge Detectors ◽  
Induced Fission ◽  
Γ Ray ◽  
Actinide Targets

Abstract Neutron-rich nuclei were studied after fast neutron-induced fission of 238U and 232Th at the ALTO facility in Orsay, France. The neutrons were produced with the LICORNE directional neutron source using a pulsed 7Li beam provided by the Tandem accelerator. The actinide targets were surrounded by the ν-Ball array to measure the de-excitation of fission fragments. The ν-Ball array is a hybrid spectrometer which consists of HPGe detectors (equipped with BGO shielding) and LaBr3(Ce) scintillation detectors allowing for high-resolution γ-ray spectroscopy and lifetime measurements in the ns/sub-ns range. This contribution presents preliminary results on 134Te and 137I populated in the 238U(n,f) reaction.

Monte Carlo approach to sequential γ-ray emission from fission fragments

2006 ◽  
Vol 73 (1) ◽  
Author(s):  
S. Lemaire ◽  
P. Talou ◽  
T. Kawano ◽  
M. B. Chadwick ◽  
D. G. Madland
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Approach ◽  
Fission Fragments ◽  
Γ Ray
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