Non-destructive Analysis of Selenium by Neutron Activation followed by Gamma-Ray Spectrometry

Nature ◽  
1960 ◽  
Vol 187 (4737) ◽  
pp. 594-595 ◽  
Author(s):  
MINORU OKADA
Keyword(s):  
Neutron Activation ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Destructive Analysis ◽  
Non Destructive

Facility for non-destructive analysis for major and trace elements using neutron-capture gamma-ray spectrometry

1981 ◽  
Vol 63 (1) ◽  
pp. 97-119 ◽  
Author(s):  
D. L. Anderson ◽  
M. P. Failey ◽  
W. H. Zoller ◽  
W. B. Walters ◽  
G. E. Gordon ◽  
...  
Keyword(s):  
Trace Elements ◽  
Neutron Capture ◽  
Gamma Ray ◽  
Major And Trace Elements ◽  
Gamma Ray Spectrometry ◽  
Destructive Analysis ◽  
Non Destructive

Gamma-Ray Spectrometric Analysis of Some Trace Elements in the Human Articular Disc of the Mandible

1963 ◽  
Vol 03 (02) ◽  
pp. 175-182 ◽  
Author(s):  
Bo Bergman ◽  
Rune Söremark
Keyword(s):  
Trace Elements ◽  
Neutron Activation ◽  
Quantitative Data ◽  
Thermal Neutron Flux ◽  
Gamma Ray ◽  
Dry Weight ◽  
Gamma Ray Spectrometry ◽  
Spectrometric Analysis ◽  
Articular Disc ◽  
Group Separation

SummaryBy means of neutron activation and gamma-ray spectrometry the concentrations in the human mandibular articular disc of the following elements have been determined: Na, Mn, Cu, Zn, Rb, Sr, Cd, W, and Au. The discs were obtained at necropsy from seven men and nine women, ranging in age from 56 to 71 years.The activation was carried out in a thermal neutron flux of about 1.7 XlO12 neutrons × cm−2 × sec.−1 for about 20 hours. A chemical group separationwas performed before the gamma-ray spectrometry. Quantitative data based on the dry weight of the cartilage samples were obtained by comparing the photo-peak area of the identified elements with those of appropriate standards.

scholarly journals The Potential of Photon Activation and Neutron Activation Techniques for Fast Soil Characterization

2020 ◽  
Vol 225 ◽  
pp. 09001
Author(s):  
Adrien Sari ◽  
Sara Garti ◽  
Frédéric Lainé ◽  
Frédérick Carrel ◽  
Jonathan Dumazert ◽  
...  
Keyword(s):  
Neutron Activation ◽  
Feasibility Study ◽  
Gamma Ray ◽  
Soil Analysis ◽  
Measurement Techniques ◽  
High Energy ◽  
Raw Material ◽  
Gamma Ray Spectrometry ◽  
Photon Activation ◽  
Secondary Target

In the frame of a partnership between CEA and VINCI, various measurement techniques are applied to soil analysis and tested in different laboratories located at CEA Saclay (France). This paper deals with two nuclear measurement techniques assessed in this project. More specifically, this paper presents the feasibility study carried out for two non-destructive active methods: photon activation and neutron activation. First, some atomic nuclides are activated either by photons or neutrons. Secondly, gamma-rays of specific energies are emitted by activated nuclides and gamma-ray spectrometry enables to identify these activated nuclides. Calibration of the full measurement system with reference samples would enable to quantify the mass of activated nuclides. Irradiations performed for photon activation measurements were conducted using a linear electron accelerator (linac) as the latter enables to generate high-energy photons by Bremsstrahlung thanks to its conversion target. Furthermore, irradiations performed for neutron activation measurements were also conducted with a linac. Indeed, photons may be converted to neutrons by photonuclear reactions using a secondary target. In the frame of this project, experiments were carried out at the SAPHIR platform (CEA Saclay) with a Linatron-M9 VARIAN linac. The electron energy was either 6 or 9 MeV. For neutron activation measurements, a secondary target made of heavy water has been used as neutron source and a polyethylene cell enabled to thermalize neutrons and increase the number of reactions of interest. In this paper, we present the different experimental setups and the measurement protocols established for this feasibility study. We show experimental results obtained with raw material samples coming from three construction sites.

Comparison of Adhesive Tapes by Neutron Activation Analysis

1967 ◽  
Vol 50 (2) ◽  
pp. 371-376
Author(s):  
J E Scott ◽  
C M Hoffman ◽  
M J Pro ◽  
H L Schlesinger
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Elemental Composition ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry

Abstract Adhesive tapes were compared by nondestructive gamma-ray spectrometry. Results show that neutron activation analysis can he used to characterize tapes through their elemental composition. Differences between manufacturers as well as hatch-tobatch and in-batch variations can be measured by neutron activation analysis.

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