scholarly journals Determination of the selenium content in biological samples by gamma - gamma coincidence method

2016 ◽  
Vol 19 (4) ◽  
pp. 154-161
Author(s):  
Minh Van Truong ◽  
Khang Dinh Pham ◽  
Hai Xuan Nguyen ◽  
Son An Nguyen ◽  
Chau Dac Nguyen
Keyword(s):  
Biological Sample ◽  
Research Reactor ◽  
Nuclear Research ◽  
Research Direction ◽  
Coincidence Method ◽  
Selenium Content ◽  
Biological And Environmental Samples ◽  
Gamma Coincidence ◽  
Nuclear Research Reactor

At Dalat nuclear research reactor, the gamma - gamma coincidence method is eficiently used in data nuclear research direction. By this method, some laboratories in the world test neutron activation analysis of geological, biological and environmental samples. In this paper, we present the determination of the selenium content in biological sample by gamma – gamma coincidence method. The results showed that the compton scattering was suppressed. The ratio of peak counts/back was improved up to 64.2 times. The detection limit for selenium in biological sample was enhanced to 8.9 times to compare to the method one detector system.

The decommissioning of the nuclear research reactor and associated facilities at the Scottish Universities Research and Reactor Centre

2005 ◽  
Vol 219 (1) ◽  
pp. 15-26
Author(s):  
H. M. Banford ◽  
R. D. Scott ◽  
I Robertson ◽  
T McCool
Keyword(s):  
Radiation Dose ◽  
Research Reactor ◽  
Nuclear Research ◽  
Remotely Operated Vehicles ◽  
Reactor Structure ◽  
Nuclear Research Reactor

The decommissioning of a 300 kW Argonaut type universities research reactor and associated facilities has been completed at the Scottish Universities Research and Reactor Centre. The strategy adopted for the demolition of the reactor and its ancillary plant and buildings is discussed. One of the principal areas of the work was the effort expended on the determination of the radioisotope abundance of the reactor structure and thereby its impact on the characterization of waste for disposal and the radiation dose budget for personnel. Extensive use was made of remotely operated vehicles to minimize this dose.

scholarly journals Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption onto γ-MnO2 Nanomaterial

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Van-Phuc Dinh ◽  
Ngoc-Chung Le ◽  
Ngoc-Tuan Nguyen ◽  
Quang-Thien Tran ◽  
Van-Dong Nguyen ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Research Reactor ◽  
Nuclear Research ◽  
Adsorption Efficiency ◽  
Experiment Data ◽  
Factors Affecting ◽  
Nuclear Research Reactor

The γ-MnO2 nanomaterial has been used to adsorb cobalt in the seawater at Phan Thiet City, Binh Thuan Province, Vietnam. Its concentration is determined by using the neutron activation analysis (NAA) method at the Dalat nuclear research reactor. Factors affecting the uptake of cobalt on the γ-MnO2 material such as the pH, adsorption time, and initial cobalt(II) concentration are investigated. The irradiated experiment data are calculated using the K0-Dalat program. The results obtained show that the trace dissolved cobalt in Phan Thiet seawater is found equal to 0.25 ± 0.04 μg/L (n=5, P=95%) with the adsorption efficiency being higher than 95% (n=4, P=95%).

Development and application of an analyte/matrix separation procedure for multi-element trace analysis of steel alloys by means of sector-field ICP-mass spectrometry

2014 ◽  
Vol 29 (6) ◽  
pp. 1073-1081 ◽  
Author(s):  
Tom Tindemans ◽  
Andrew Dobney ◽  
Dorine Wambeke ◽  
Frank Vanhaecke
Keyword(s):  
Research Reactor ◽  
Nuclear Research ◽  
Separation Procedure ◽  
High Alloy ◽  
Steel Alloys ◽  
Matrix Separation ◽  
Nuclear Research Reactor ◽  
Alloy Steels ◽  
Icp Mass Spectrometry

On the determination of trace elements in three high-alloy steels (T91, 316L and 15–15Ti), which are to be used as structural materials in a novel nuclear research reactor.

Determination of long-lived radionuclides in radioactive wastes from the IEA-R1 nuclear research reactor

2012 ◽  
Vol 295 (2) ◽  
pp. 951-957 ◽  
Author(s):  
M. H. T. Taddei ◽  
R. Vicente ◽  
J. T. Marumo ◽  
S. K. Sakata ◽  
L. A. A. Terremoto
Keyword(s):  
Research Reactor ◽  
Nuclear Research ◽  
Radioactive Wastes ◽  
Nuclear Research Reactor

scholarly journals MCNP model of L-54M nuclear research reactor: validation by preliminary graphite radiological characterization

2019 ◽  
Vol 322 (3) ◽  
pp. 1341-1350
Author(s):  
Eros Mossini ◽  
Luca Codispoti ◽  
Giorgio Parma ◽  
Filippo Maria Rossi ◽  
Elena Macerata ◽  
...  
Keyword(s):  
Research Reactor ◽  
Nuclear Research ◽  
Nuclear Research Reactor ◽  
Radiological Characterization

Determination of stable isotope ratios using nuclear reaction analysis coupled with a particle–gamma coincidence method

2021 ◽  
Author(s):  
Paula Rangel Pestana Allegro ◽  
Márcia de Almeida Rizzutto ◽  
Nemitala Added ◽  
Vitor Ângelo Paulino de Aguiar ◽  
Dennis Lozano Toufen ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Gamma Rays ◽  
Charged Particles ◽  
Isotope Ratios ◽  
Nuclear Reaction Analysis ◽  
Stable Isotope Ratios ◽  
Coincidence Method ◽  
Medium Energy ◽  
Gamma Coincidence

This study presents an alternative method to determine isotope ratios using a medium energy accelerator and simultaneously measuring the charged particles and gamma-rays produced in a nuclear reaction.

Sign in / Sign up

Export Citation Format

Share Document