Spectral projections for induced gamma emission from 178Hfm2

1999 ◽  
Author(s):  
Hilary E. Roberts
1999 ◽  
Author(s):  
Svjatoslav I. Bondarevskii ◽  
Boris E. Dzevitskii ◽  
Vjacheslav V. Eremin ◽  
German A. Skorobogatov

Author(s):  
S. M. Fahad ◽  
Shah Sultan Ashrafi ◽  
Md. Joynal Abedin ◽  
Mohammad Obaidur Rahman ◽  
F.A. Sabbir Ahamed ◽  
...  

Author(s):  
SUDEEP KUMAR KUMAR SAMANTA ◽  
Arijit Sengupta ◽  
S Ghorui ◽  
Raghunath Acharya ◽  
Pradeep Kumar Pujari

Coal is an important energy source and its quality evaluation in terms of ash content and other element like B and F is a necessity. An external (in air) Particle...


1990 ◽  
Vol 01 (02) ◽  
pp. 197-207 ◽  
Author(s):  
FLORENCE T. CUA

The objective of this research is to determine whether there is a difference in the Ca, P, Fe, F, Mg, and Sr concentrations in teeth from children with and without cystic fibrosis (CF) as a function of age, sex of the child, maternal smoking habit, maternal drinking habit, and fluoridation of water supply. The nuclear analytical methods used were Proton-Induced X-Ray Emission (PIXE) and Proton-Induced Gamma Emission (PIGE). The findings are: (1) the concentration of Mg is higher in the teeth of children with cystic fibrosis who took antibiotics other than tetracycline (CF+NT) than in non-cystic fibrosis (NCF) teeth for the “female” category; (2) P concentration is less in (CF+NT) teeth for the “age greater than ten” group; (3) Fe concentration is greater for females in the NCF group; (4) Ca and Fe concentrations are lower for CF than for NCF in the “mother smokes” group; (5) F and Sr concentrations for CF+NT are higher for the “mother drinks” group than for the “mother does not drink” group; (6) “mother smokes” shows a depletion of Ca and Fe compared to “mother does not smoke” for CF+NT. (7) “fluoridation of water supply” shows an increase in F, except for NCF teeth.


2003 ◽  
Vol 38 (5) ◽  
pp. 759-765 ◽  
Author(s):  
K. Noll ◽  
M. Döbeli ◽  
U. Krähenbühl ◽  
D. Grambole ◽  
F. Herrmann ◽  
...  

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Guilherme Soares Zahn ◽  
Regina Beck Ticianelli ◽  
Mitiko Saiki ◽  
Frederico Antonio Genezini

In IPEN’s Neutron Activation Laboratory (LAN/IPEN), thin stainless steel sample holders are used for gamma spectrometry in NAA measurements. This material is very practical, but its chemical composition may be troublesome, as it presents large amounts of elements with intermediate atomic number, with attenuation factors for low-energy gamma-rays that must not be neglected. In this study, count rates obtained using different sample holders were compared. To accomplish that, an Am-241 source, with 59-keV gamma emission, was used so that low-energy gamma attenuation differences can be determined. Moreover, in order to study the energy dependence of these differences, a Ho-166m source was also used. From these results, it was possible to analyze the experimental error associated to the variations between sample holders, with the aim of introducing an addictive term to the uncertainty analysis of comparative Neutron Activation Analysis results.


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