scholarly journals Measurements of the neutron activation cross sections for Bi at 287 and 370 MeV

2011 ◽  
Vol 1 (1) ◽  
pp. 135-139
Author(s):  
H. Yashima ◽  
S. Sekimoto ◽  
T. Utsunomiya ◽  
K. Ninomiya ◽  
T. Omoto ◽  
...  
Keyword(s):  
Neutron Activation ◽  
Proton Beam ◽  
Cross Section ◽  
Cross Sections ◽  
Nuclear Data ◽  
Neutron Field ◽  
Low Energy ◽  
Energy Neutron ◽  
Data Files ◽  
Activation Cross Sections

AbstractWe present cross section measurements for neutron-induced activation of Bi, at 287 and 370 MeV. These values were derived from the activation method using a quasi-monoenergetic neutron field based on the 7Li(p,n) reaction. In separate experiments, samples were irradiated with neutrons derived from 7Li(p,n) reaction at either 0º or 30º for proton beam axis. This approach allows the subtraction of the low energy neutron components. The measured cross sections are compared with the findings of other studies, and evaluated in relation to nuclear data files.

scholarly journals High Energy Neutron Activation Cross Sections

2002 ◽  
Vol 39 (sup2) ◽  
pp. 1392-1395 ◽  
Author(s):  
Takashi Nakamura ◽  
Eunjoo Kim ◽  
Yoshitomo Uwamino ◽  
Yoshitomo Uno ◽  
Noriaki Nakao
Keyword(s):  
Neutron Activation ◽  
Cross Sections ◽  
High Energy ◽  
High Energy Neutron ◽  
Energy Neutron ◽  
Activation Cross Sections

scholarly journals Comparative survey of evaluated nuclear data libraries for fusion-relevant neutron activation spectrometry

2020 ◽  
Vol 239 ◽  
pp. 21003
Author(s):  
Prasoon Raj ◽  
Ulrich Fischer ◽  
Axel Klix ◽  
JET Contributors
Keyword(s):  
Cross Section ◽  
Nuclear Physics ◽  
Nuclear Data ◽  
Reaction Rates ◽  
Neutron Field ◽  
Physics Institute ◽  
Section Data ◽  
Fusion Applications ◽  
Data Files ◽  
Data Libraries

The neutron flux-spectrum in a fusion device is frequently determined with activation foils and adjustment of a guess-spectrum in unfolding codes. Spectral-adjustment being a rather complex and uncertain procedure, we are carefully streamlining and evaluating it for upcoming experiments. Input nuclear cross-section data holds a vital position in this. This paper presents a survey of common dosimetry reactions and available data files relevant for fusion applications. While the IRDFF v1.05 library is the recommended source, many reactions of our interest are found missing in this. We investigated other standard sources: ENDF/B-VIII.0, EAF-2010, TENDL-2017, JENDL-4.0 etc. And, we analysed two experiments to ascertain the sensitivity of the spectral adjustment to the choice of nuclear data. One was performed with D-D (approx. 2.5 MeV peak) neutrons at the Joint European Torus (JET) machine and another with a white neutron field (approx. 33 MeV endpoint energy) at Nuclear Physics Institute (NPI) of Řež. Choice of cross-section source has affected the integral fluxes (<5%), reaction rates (<10%), total fluxes in some sensitive energy-regions (>20%) and individual group fluxes (<30%). Based on this experience, essential qualitative conclusions are made to improve the fusion activation-spectrometry.

High Energy Neutron Activation Cross Sections

2008 ◽  
pp. 393-393-8
Author(s):  
T Nakamura ◽  
E Kim ◽  
Y Uwamino ◽  
N Nakao ◽  
S Tanaka
Keyword(s):  
Neutron Activation ◽  
Cross Sections ◽  
High Energy ◽  
High Energy Neutron ◽  
Energy Neutron ◽  
Activation Cross Sections

Thermal and 14.4 MeV neutron activation cross sections of argon

1969 ◽  
Vol 128 (1) ◽  
pp. 333-338 ◽  
Author(s):  
N. Ranakumar ◽  
E. Karttunen ◽  
R.W. Fink
Keyword(s):  
Neutron Activation ◽  
Cross Sections ◽  
Activation Cross Sections

Some neutron activation cross-sections at 1478 MeV

1973 ◽  
Vol 27 (8) ◽  
pp. 531-541 ◽  
Author(s):  
J.C. Robertson ◽  
B. Audric ◽  
P. Kolkowski
Keyword(s):  
Neutron Activation ◽  
Cross Sections ◽  
Activation Cross Sections
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