Standardisation of low-activity actinide solutions by alpha-particle counting at a defined solid angle

2004 ◽  
Vol 61 (2-3) ◽  
pp. 405-408 ◽  
Author(s):  
G Sibbens ◽  
S Pommé ◽  
T Altzitzoglou
Keyword(s):  
Alpha Particle ◽  
Solid Angle ◽  
Particle Counting ◽  
Low Activity

Precision Alpha-Particle Counting

Nature ◽  
1954 ◽  
Vol 173 (4412) ◽  
pp. 991-992 ◽  
Author(s):  
K. M. GLOVER ◽  
G. R. HALL
Keyword(s):  
Alpha Particle ◽  
Particle Counting

scholarly journals Detection of alpha particle contamination on ultra low activity-grade integrated circuits

2016 ◽  
Vol 12 ◽  
pp. 03004 ◽  
Author(s):  
Ana C. Fernandes ◽  
Tomoko A. Morlat ◽  
Miguel Felizardo ◽  
Andreas Kling ◽  
Raul C. Martins ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Alpha Particle ◽  
Activity Grade ◽  
Particle Contamination ◽  
Low Activity

Quantitative Alpha-Particle Counting by the Emulsion Technique

1947 ◽  
Vol 72 (4) ◽  
pp. 356-356 ◽  
Author(s):  
Herman Yagoda ◽  
Nathan Kaplan
Keyword(s):  
Alpha Particle ◽  
Emulsion Technique ◽  
Particle Counting

Thermoluminescence dating studies of glacial silts from Ontario

1984 ◽  
Vol 21 (12) ◽  
pp. 1393-1399 ◽  
Author(s):  
Glenn W. Berger
Keyword(s):  
Water Content ◽  
Pore Water ◽  
Alpha Particle ◽  
Growth Curves ◽  
The Other ◽  
Dry Powders ◽  
The Third ◽  
The Past ◽  
Thermoluminescence Dating ◽  
Particle Counting

To develop procedures for the direct dating of glacially related silts by thermoluminescence (TL), I have applied previously proposed techniques to three polymineralic 4–11 μm samples from the Toronto area. Furthermore, one of these samples was studied in detail by isolating some mineral fractions. The principal conclusion is that the TL of the lodgment Halton Till (from Woodbridge) was not significantly reset during deposition, whereas the TL of the waterlaid upper Thorncliffe silt (from the Scarborough Bluffs) was reset, as was the TL of the third sample (WC-ST), a massive silt from Woodbridge that has been generally correlated with the glaciolacustrine Sunnybrook diamict at the Bluffs. This conclusion follows from the observation of feldspar TL apparent ages of >140 ka for the ~12 ka BP Halton Till and of 36 and 66 ka for the upper Thorncliffe and WC-ST samples, respectively.The four laboratory factors that contributed most to inaccuracies in the TL apparent ages were: (1) anomalous fading in the feldspar-dominant fractions, (2) nonlinearity in TL growth curves, (3) "overbleaching" of the TL, and (4) radon loss during alpha particle counting of dry powders. The effects of each of these have been circumvented or minimized. As expected, uncertainty in the past pore-water content represented the single largest source of imprecision for such TL apparent ages after correction for the other effects.

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