Application of a Novel 14-Mev Neutron Activation Analysis System for Cross-Section Measurements with Short-Lived Nuclides

1983 ◽  
pp. 859-862 ◽  
Author(s):  
B. Anders ◽  
R. Pepelnik ◽  
H.-U. Fanger
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Cross Section ◽  
Analysis System

scholarly journals A new rapid neutron activation analysis system at Dalat nuclear research reactor

2014 ◽  
Vol 4 (1) ◽  
pp. 84-90
Author(s):  
V. Doanh H. ◽  
D. Vu C. ◽  
Q. Thien T. ◽  
N. Son P. ◽  
T. Sy N. ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Research Reactor ◽  
Vertical Channel ◽  
Nuclear Research ◽  
Selenium Concentration ◽  
Transfer System ◽  
Pneumatic Transfer System ◽  
Analysis System

An auto-pneumatic transfer system has been installed at the Dalat research reactor for rapid instrument neutron activation analysis based on very short-lived nuclides. This system can be used to perform short irradiations in seconds either in the vertical channel 13-2 or in the horizontal thermal column of the reactor. The transferring time of sample from irradiation to measurement position is approximately 3.2 seconds. A loss-free counting system using HPGE detector has been also setup in compacting with the pneumatic transfer system for measurement of sample’s activity, automatically starting for data acquisition at irradiated sample’s arrival. This new facility was tested and shown to have high potential for the determination of short-lived nuclides with half-lives from 10 ¸ 100 seconds. This work presents the results of timing parameter measurements, characterization of irradiation facilities, and application of this system to determining Selenium concentration in several biological reference materials.

scholarly journals A review of nuclear data for the k₀-based neutron activation analysis

2019 ◽  
Vol 9 (1) ◽  
pp. 28-33
Author(s):  
Manh Dung Ho ◽  
Lathdavong Phonesavanh
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Cross Section ◽  
Neutron Capture ◽  
Capture Cross Section ◽  
Nuclear Data ◽  
Thermal Neutron Capture ◽  
Capture Cross ◽  
Neutron Capture Cross Section

Nuclear data for the k0-based neutron activation analysis (k0-NAA) including: k0-factors – combination of nuclear constants (atomic mass, isotopic abundance, gamma-ray yield and thermal neutron capture cross section); Q0 – the ratio of the resonance integral to thermal neutron capture cross section; and Er – effective resonance energy, along with the related nuclear data are presented and evaluated in the presentation. Accuracy and capability of k0-NAA depends considerably on the reliability of the above mentioned nuclear data. In general, the evaluation of nuclear data is essential and necessary in the field of nuclear science and technology, and this work is conducted by the nuclear data centers on the world as well as the research institutions where the nuclear data are usedfor R&D. Therefore, the evaluation of the nuclear data used in k0-NAA should also be performed so that some of data may no longer be appropriate should be redetermined. The evaluation of nuclear data in k0-NAA would contribute to the improvement of accuracy and reliability of the method, moreover, it would also contribute to the establishment a nuclear database in Vietnam in the future.

scholarly journals Development of a transportable neutron activation analysis system to quantify manganese in bonein vivo: feasibility and methodology

2013 ◽  
Vol 34 (12) ◽  
pp. 1593-1609 ◽  
Author(s):  
Yingzi Liu ◽  
David Koltick ◽  
Patrick Byrne ◽  
Haoyu Wang ◽  
Wei Zheng ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Analysis System
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