scholarly journals Revisiting the Analysis of the Isochronous Mass Measurements of Uranium Fission Fragments at the ESR

2020 ◽  
Vol 227 ◽  
pp. 02012
Author(s):  
R. S. Sidhu ◽  
R. J. Chen ◽  
Yu. A Litvinov ◽  
Y. H. Zhang ◽  
Keyword(s):  
Experimental Data ◽  
Data Analysis ◽  
State Of The Art ◽  
Fission Products ◽  
Mass Measurements ◽  
Fission Fragments ◽  
Uranium Fission

The re-analysis of experimental data on mass measurements of ura- nium fission products obtained at the ESR in 2002 is discussed. State-of-the-art data analysis procedures developed for such measurements are employed.

scholarly journals New results from isochronous mass measurements of neutron-rich uranium fission fragments with the FRS-ESR-facility at GSI

2016 ◽  
Vol 52 (5) ◽  
Author(s):  
R. Knöbel ◽  
M. Diwisch ◽  
H. Geissel ◽  
Yu. A. Litvinov ◽  
Z. Patyk ◽  
...  
Keyword(s):  
Mass Measurements ◽  
Fission Fragments ◽  
Uranium Fission

scholarly journals Transformations of actinides fission product yields due to post scission emission of nuclear particles:232Th

2021 ◽  
Author(s):  
V.T. Maslyuk ◽  
O.O. Parlag ◽  
M.I. Romanyuk ◽  
O.I. Lendyel ◽  
O.M. Pop
Keyword(s):  
Experimental Data ◽  
Fission Product ◽  
Fission Products ◽  
Product Yields ◽  
Fission Fragments ◽  
Charge Distributions ◽  
Fission Product Yields ◽  
Symmetric Fission ◽  
The Many ◽  
Theoretical Results

The "many ensembles" method was proposed to investigate the influence of nuclear particles' post-scission emission on mass and charge distributions of fission products. The post scission approximation had been used; each of these ensembles consists of the fission fragments after emission of chains of different lengths, both the beta (±β) particles and neutrons. The theory allows one to find the most probable two fragment clusters of fission products and study their evolution after the post-scission emission of nuclear particles. The isotope <sup>232</sup>Th was chosen as an example, the fission fragments of which are intensively studied in the experiment. It is shown that the post-scission emission of nuclear particles eventually leads to the convergence of the asymmetric peaks, which looks like enhanced symmetric fission mode over asymmetric one for fission product yields. A comparison of the theoretical results and experimental data for the <sup>232</sup>Th fission fragments indicates their satisfactory matching.

Practical Astronomy Education at the National University of Singapore (NUS)

2019 ◽  
Vol 01 (01) ◽  
pp. 1950004
Author(s):  
A. Yang ◽  
S. C. Cindy Ng ◽  
Q. Leong ◽  
M. H. Tan ◽  
P. Agarwal ◽  
...  
Keyword(s):  
Experimental Data ◽  
General Education ◽  
Scientific Theory ◽  
State Of The Art ◽  
Educational Institutions ◽  
Astronomy Education ◽  
National University ◽  
Robotic Telescope ◽  
Astronomy And Astrophysics

Singapore is not known for astronomy research. However, the interest in astronomy has grown since the 1990s, when more educational institutions and observatories were built to equip students with the skills and knowledge in astronomy. The National University of Singapore (NUS) currently has a strong and rigorous astronomy and astrophysics programme that leads to an astrophysics specialization within the physics B.Sc. degree as well as four general education modules in astronomy and astrophysics. As experimental data is the final arbiter of any scientific theory, we emphasize the practical aspects of astronomy in this programme. We also have a state-of-the-art observatory equipped with a robotic telescope and a planetarium for tutorials. This paper outlines the philosophy, pedagogy and approach of how our NUS team has achieved a very successful undergraduate astronomy and astrophysics for aspiring Singaporean youth.

MEMBRANE EXTRACTION IN PRECONCENTRATION OF SOME URANIUM FISSION PRODUCTS

1984 ◽  
Vol 2 (2) ◽  
pp. 227-252 ◽  
Author(s):  
F. Macášek ◽  
P. Rajec ◽  
R. Kopunec ◽  
V. Mikulaj
Keyword(s):  
Fission Products ◽  
Membrane Extraction ◽  
Uranium Fission

Stand-Alone Containment Analysis of the PHÉBUS FPT-1 Test With the ASTEC and the MELCOR Codes

2016 ◽  
Author(s):  
Bruno Gonfiotti ◽  
Sandro Paci
Keyword(s):  
State Of The Art ◽  
External Environment ◽  
Fission Products ◽  
Severe Accident ◽  
Sensitivity Analyses ◽  
Complex Task ◽  
Primary Coolant ◽  
Control Volumes ◽  
Coolant System

The estimation of Fission Products (FPs) release from the containment system of a nuclear plant to the external environment during a Severe Accident (SA) is a quite complex task. In the last 30–40 years several efforts were made to understand and to investigate the different phenomena occurring in such a kind of accidents in the primary coolant system and in the containment. These researches moved along two tracks: understanding of involved phenomenologies through the execution of different experiments, and creation of numerical codes capable to simulate such phenomena. These codes are continuously developed to reflect the actual SA state-of-the-art, but it is necessary to continuously check that modifications and improvements are able to increase the quality of the obtained results. For this purpose, a continuous verification and validation work should be carried out. Therefore, the aim of the present work is to re-analyze the Phébus FPT-1 test employing the ASTEC (F) and MELCOR (USA) codes. The analysis focuses on the stand-alone containment aspects of the test, and three different modellisations of the containment vessel have been developed showing that at least 15/20 Control Volumes (CVs) are necessary for the spatial schematization to correctly predict thermal-hydraulics and the aerosol behavior. Furthermore, the paper summarizes the main thermal-hydraulic results, and presents different sensitivity analyses carried out on the aerosols and FPs behavior.

THE “KVAZAR” PACKAGE FOR PATTERN RECOGNITION AND ITS APPLICATIONS

1993 ◽  
Vol 03 (04) ◽  
pp. 439-444 ◽  
Author(s):  
VLADIMIR S. KAZANTSEV
Keyword(s):  
Experimental Data ◽  
Pattern Recognition ◽  
Data Analysis ◽  
Linear Inequalities ◽  
Processing Data ◽  
Experimental Data Analysis ◽  
Ibm Pc

The package of applied programs named KVAZAR has been elaborated to be used for classification, diagnostic, predicative, experimental data analysis problems. The package may be used in medicine, biology, geology, economics, engineering and some other problems. The algorithmical base of the package is the method of pattern recognition, based on the linear inequalities and committee constructions. Other algorithms are used too. The package KVAZAR is intended to be used with IBM PC AT/XT. The range of processing data is bounded by 40,000 numbers.

Laser Beam Transmission by Inorganic Liquid Activated by Neodymium and Uranyl in Pulsed Excitation by Uranium Fission Fragments

Atomic Energy ◽  
2017 ◽  
Vol 121 (6) ◽  
pp. 448-455 ◽  
Author(s):  
P. P. D’yachenko ◽  
P. A. Kulikov ◽  
E. A. Seregina ◽  
A. A. Seregin ◽  
G. V. Tikhonov
Keyword(s):  
Laser Beam ◽  
Pulsed Excitation ◽  
Fission Fragments ◽  
Beam Transmission ◽  
Uranium Fission
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