68 (Ge+Ga) activity standardization by 4πβ(LS)-γ(NaI(Tl)) anticoincidence counting measurements

2018 ◽  
Vol 134 ◽  
pp. 307-311 ◽  
Author(s):  
C.J. da Silva ◽  
P.A.L. da Cruz ◽  
A. Iwahara ◽  
E.M. de Oliveira ◽  
J. dos S. Loureiro ◽  
...  
2018 ◽  
Vol 134 ◽  
pp. 316-320 ◽  
Author(s):  
C.J. da Silva ◽  
Paulo A.L. da Cruz ◽  
A. Iwahara ◽  
J. dos S. Loureiro ◽  
R. dos S. Gomes ◽  
...  

2021 ◽  
pp. 109559
Author(s):  
R.F.P. Simões ◽  
C.J. da Silva ◽  
R.L. da Silva ◽  
L.V. de Sá ◽  
R. Poledna ◽  
...  

Radiocarbon ◽  
1992 ◽  
Vol 34 (3) ◽  
pp. 428-430 ◽  
Author(s):  
Páll Theodórsson ◽  
Lauri Kaihola ◽  
H. H. Loosli ◽  
José M. Rodríguez

An informal collaborative group of radiocarbon dating laboratories, the Low-Level Club, has been established to measure the gamma radiation flux and to test the efficiency of the anticoincidence counting system in laboratories with a NaI detector unit. The detector will record gamma radiation from cosmogenic nuclides, muons and secondary γ radiation formed in the passive shield by charged cosmic-ray particles. We present here the first phase of this work.


Radiocarbon ◽  
1976 ◽  
Vol 18 (2) ◽  
pp. 221-239 ◽  
Author(s):  
A W Fairhall ◽  
A W Young ◽  
J L Erickson

The dates reported in this list are for geologic and archaeologic samples only. During the interval since our last date list (R, 1966, v 8, p 498-506) most of our measurements have been on samples of sea water. These will be reported separately at a later time. The methods used are essentially those reported previously (R, 1963, v 5, p 80-81) but with the following notable changes and additions: We now prepare our methane counting gas as described in Buddemeier et al (1970). Our IL membrane counter has since been augmented by 3 additional counters. Two of these are IL quartz proportional counters inside geiger anticoincidence shields. Operating pressures are ca 1.5 to 4atm. Backgrounds of these 2 counters are in the neighborhood of 1.8 and 3cpm and the net counting rate of NBS oxalic acid ranges from 7 to 18.7cpm, depending on the pressure. The third counter (“minicounter”) is rather special: .IL quartz proportional counter inside a methane proportional anticoincidence counter. Sample and anticoincidence counting gases are introduced simultaneously with a differential pressure that never exceeds a few cm Hg. The sample filling side is constructed so as to minimize dead volume; over 80% of the sample gas is inside the active volume of the 14C counter. The range of filling pressures which are possible is ca 1 to 4atm.


2020 ◽  
Vol 1505 ◽  
pp. 012023
Author(s):  
Agung Agusbudiman ◽  
Nur Rahmah Hidayati ◽  
Martalena Ramli ◽  
Holnisar

2006 ◽  
Vol 64 (9) ◽  
pp. 1031-1035 ◽  
Author(s):  
K. Kossert ◽  
H. Janßen ◽  
R. Klein ◽  
M.K.H. Schneider ◽  
H. Schrader

2008 ◽  
Vol 66 (6-7) ◽  
pp. 865-871 ◽  
Author(s):  
O. Nähle ◽  
K. Kossert ◽  
R. Klein

2018 ◽  
Vol 13 (3) ◽  
pp. 116-122 ◽  
Author(s):  
L. Trišić

The subject of this work is to present forensic science standardization trends in the world and in Europe with special review of the application of ISO/IEC 17025:2005 standard, which is a condition for forensic laboratory accreditation. Through the analysis of needs and constant efforts to make the forensic area simpler for cooperation and more practical for use, as well as to improve the quality of forensic analysis results and their acceptance beyond the borders of a country, the author will try to point out the significance of implementing this international standard, in terms of economics and cost-effectiveness, as well as overall rationality. Accepting and exchanging the best professional and scientific experiences, professional help and cooperation in the form of international exchange of forensic data bases, and unreserved acceptance of valid forensic laboratory results ensure the quality the forensic science and profession are striving for, as shown in the EU document titled “Creating a common European space for the forensic sciences 2020”. We believe that forensic activity standardization in Bosnia and Herzegovina will help in fighting terrorism and organized crime more effectively. In other words, the process of forensic analysis will be more valid and practical, forensic laboratories more competent, and court proceedings more effective through norming the forensic handling of evidence. Thus an important obligation of Bosnia and Herzegovina on its way to European integration will be fulfilled, because once a forensic laboratory receives an affirmation for its results, it becomes a benchmark for forensic analyses and crime detection.


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