scholarly journals Data analysis of the FIC detector at the n_TOF facility

2019 ◽  
Vol 14 ◽  
pp. 155
Author(s):  
D. Karadimos ◽  
K. Ioannides ◽  
P. Assimakopoulos ◽  
N. Tsagas ◽  
P. Paulopoulos ◽  
...  
Keyword(s):  
Data Analysis ◽  
Cross Section ◽  
Neutron Beam ◽  
Fission Cross Section ◽  
Digital Converter ◽  
Analog To Digital ◽  
Analysis Technique ◽  
Induced Fission ◽  
Line Analysis

The analysis technique applied to the data from the FIC (Fast Induction Chamber) detector at the n_TOF facility is presented here. The measurements took place at the installation of CERN in Geneva. The detector was placed in front of the neutron beam for the determination of the neutron induced fission cross-section of various isotopes of the Th cycle. For the data acquisition, several fADC (flash Analog to Digital Converter) channels were used. This facilitated the detailed off-line analysis of data since all information was stored in the computer. The analysis of the data aimed at the discrimination of fission events. For this end we had to deal with three main issues: (1) The subtraction of the background, (2) the fitting of the pulses and (3) the automation of the process. The analysis pertaining to these issues will be further elucidated here.

scholarly journals 234U(n,f) cross section with the FIC detector at CERN (n TOF)

2020 ◽  
Vol 16 ◽  
pp. 175
Author(s):  
D. Karadimos ◽  
... Et al.
Keyword(s):  
Cross Section ◽  
Ionization Chamber ◽  
Reaction Cross Section ◽  
Fission Cross Section ◽  
Reaction Cross ◽  
Analog To Digital ◽  
Analysis Technique ◽  
Induced Fission ◽  
Line Analysis

The analysis technique applied to the data and the reaction cross section 234U(n,f) from the FIC (Fission Ionization Chamber) detector at the n TOF facility is pre- sented here. A comparison of the measured neutron induced fission cross section of 234U nucleus is given with the available data from the bibliography. The measure- ments took place at the installation of CERN in Geneva. The detector was placed in front of the neutron beam for the determination of the neutron induced fission cross section of various isotopes of the Th cycle. For the data acquisition, several flash Analog to Digital Converter (fADC) channels were used. This facilitated the detailed off-line analysis of data since all information was stored in the computer. The automation of the process was required because the high amount of stored data. The data analysis aimed at the discrimination of fission events. For this end we had to deal with three main issues: i) The subtraction of the background, ii) the fitting of the pulses and iii) the automation of the process.

scholarly journals Determination of the fast-neutron-induced fission cross-section of 242Pu at nELBE

2018 ◽  
Vol 169 ◽  
pp. 00009
Author(s):  
Toni Kögler ◽  
Roland Beyer ◽  
Arnd R. Junghans ◽  
Ronald Schwengner ◽  
Andreas Wagner
Keyword(s):  
Fast Neutron ◽  
Cross Section ◽  
Neutron Transport ◽  
Fission Cross Section ◽  
Data Sets ◽  
Fission Rate ◽  
Relative Cross Section ◽  
Neutron Time ◽  
Induced Fission

The fast-neutron-induced fission cross section of 242Pu was determined in the energy range of 0.5 MeV to 10MeV at the neutron time-of-flight facility nELBE. Using a parallel-plate fission ionization chamber this quantity was measured relative to 235U(n,f). The number of target nuclei was thereby calculated by means of measuring the spontaneous fission rate of 242Pu. An MCNP 6 neutron transport simulation was used to correct the relative cross section for neutron scattering. The determined results are in good agreement with current experimental and evaluated data sets.

scholarly journals Neutron-induced fission cross-section measurement of 234U with monoenergetic beams in the keV and MeV range using MicroMegas detectors

2019 ◽  
Vol 24 ◽  
pp. 250
Author(s):  
A. Kanellakopoulos ◽  
A. Stamatopoulos ◽  
A. Tsinganis ◽  
M. Kokkoris ◽  
R. Vlastou ◽  
...  
Keyword(s):  
Cross Section ◽  
Neutron Beam ◽  
Cross Sections ◽  
Fission Cross Section ◽  
Incident Neutron ◽  
Tandem Accelerator ◽  
Cross Section Measurement ◽  
Preliminary Results ◽  
Section Measurement ◽  
Induced Fission

The fission cross-section of 234U was measured at incident neutron energies between 300 and 500 keV and 4 and 5 MeV with a setup based on “microbulk” MicroMegas detectors. The standard 235,238U fission cross-sections were used as reference. The neutron beams were produced via the 7Li(p,n) and the 2H(d,n) reactions at the neutron beam facility of the 5.5 MeV Tandem accelerator laboratory at NCSR “Demokritos”. The mass of the actinide content of the targets used and of their impurities was quantitatively determined via α – spectroscopy. The developed methodology and preliminary results are presented.

scholarly journals PENGARUH PROFITABILITAS TERHADAP NILAI PERUSAHAAN DENGAN STRUKTUR MODAL SEBAGAI MEDIATOR PADA PERUSAHAAN PEMBIAYAAN

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ni Ketut Sulastri ◽  
Ni Ketut Surasni
Keyword(s):  
Data Analysis ◽  
Capital Structure ◽  
Path Analysis ◽  
Firm Value ◽  
Analytical Tool ◽  
Purposive Sampling ◽  
Analysis Technique ◽  
Finance Company ◽  
The Capital Structure

This study aims to analyze the effect of profitability on capital structure, the effect of capital structure on firm value, the effect of profitability on firm value and analyze the effect of profitability on firm value through the capital structure of finance companies on the IDX. This type of research is causal associative research. The population of this study is a finance company listed on the IDX, while the selected sample consists of 11 companies. Determination of samples with Purposive sampling. The data analysis technique uses Path Analysis (path analysis) and the analytical tool used is IBM SPSS 23. The results show that (1) profitability has a positive and not significant effect on capital structure (2) the capital structure has a positive and not significant effect on firm value ( 3) profitability has a positive and significant effect on firm value (4) capital structure is not able to mediate the influence of profitability on firm value.Keywords:Perusahaan Pembiayaan;Profitabilitas;Nilai Perusahaan;Struktur Modal

scholarly journals NEUTRON-INDUCED FISSION CROSS SECTION OF Pu$sup 240$

1957 ◽  
Author(s):  
R.L. Henkel ◽  
R.A. Nobles ◽  
R.K. Smith
Keyword(s):  
Cross Section ◽  
Fission Cross Section ◽  
Induced Fission

scholarly journals Measurement of Fast Neutron Induced Fission Cross Section for Actinide Nuclides

1989 ◽  
Vol 26 (1) ◽  
pp. 11-14 ◽  
Author(s):  
Mamoru BABA ◽  
Naohiro HIRAKAWA ◽  
Tomohiko IWASAKI ◽  
Kazutaka KANDA
Keyword(s):  
Fast Neutron ◽  
Cross Section ◽  
Fission Cross Section ◽  
Induced Fission

Fast Neutron Induced Fission Cross Section for Pu-239

1983 ◽  
pp. 36-38 ◽  
Author(s):  
Zhou Xianjian ◽  
Yan Wuguang ◽  
Zhou Huiming ◽  
Deng Xinlu ◽  
Rong Chaofan ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Cross Section ◽  
Fission Cross Section ◽  
Induced Fission

Towards Improved Evaluation of Neutron-Induced Fission Cross Section

2011 ◽  
Vol 59 (2(3)) ◽  
pp. 979-982 ◽  
Author(s):  
S. Goriely ◽  
S. Hilaire ◽  
A. J. Koning ◽  
R. Capote
Keyword(s):  
Cross Section ◽  
Fission Cross Section ◽  
Induced Fission
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