The mathematical modeling of the experiment on the determination of correlation coefficients in neutron beta-decay

2018 ◽  
Author(s):  
A. P. Serebrov ◽  
O. M. Zherebtsov ◽  
G. N. Klyushnikov
Keyword(s):  
Mathematical Modeling ◽  
Beta Decay ◽  
Correlation Coefficients ◽  
Neutron Beta Decay

scholarly journals Determination of the Weak Axial Vector Couplingλ=gA/gVfrom a Measurement of theβ-Asymmetry ParameterAin Neutron Beta Decay

2013 ◽  
Vol 110 (17) ◽  
Author(s):  
D. Mund ◽  
B. Märkisch ◽  
M. Deissenroth ◽  
J. Krempel ◽  
M. Schumann ◽  
...  
Keyword(s):  
Beta Decay ◽  
Axial Vector ◽  
Neutron Beta Decay

scholarly journals Neutron beta decay and the current determination of Vud

2001 ◽  
Vol 500 (1-2) ◽  
pp. 66-74 ◽  
Author(s):  
A. Garcı́a ◽  
J.L. Garcı́a-Luna ◽  
G. López Castro
Keyword(s):  
Beta Decay ◽  
Neutron Beta Decay

scholarly journals Undetected electron backscattering in Perkeo III

2019 ◽  
Vol 219 ◽  
pp. 04005 ◽  
Author(s):  
Christoph Roick ◽  
Heiko Saul ◽  
Hartmut Abele ◽  
Bastian Märkisch
Keyword(s):  
Systematic Error ◽  
Beta Decay ◽  
Systematic Uncertainty ◽  
Electron Spectroscopy ◽  
Axial Vector ◽  
Vector Coupling ◽  
Neutron Beta Decay ◽  
Axial Vector Coupling ◽  
Electron Detection

The beta asymmetry in neutron beta decay is used to determine the ratio of axial-vector coupling to vector coupling most precisely. In electron spectroscopy, backscattering of electrons from detectors can be a major source of systematic error. We present the determination of the correction for undetected backscattering for electron detection with the instrument Perkeo III. For the electron asymmetry, undetected backscattering leads to a fractional correction of 5 × 10−4, i.e. a change by 40% of the total systematic uncertainty.

Determination of parameters of short circuit of power transformer by means of mathematical modeling

2017 ◽  
Vol 26 (102) ◽  
pp. 110-119
Author(s):  
D. S. Yarymbash, ◽  
◽  
S. T. Yarymbash, ◽  
T. E. Divchuk, ◽  
D. A. Litvinov
Keyword(s):  
Mathematical Modeling ◽  
Power Transformer ◽  
Short Circuit ◽  
Determination Of Parameters

Compartmental transfer of mercury released from amalgam

1997 ◽  
Vol 16 (11) ◽  
pp. 667-672 ◽  
Author(s):  
S. Halbach ◽  
L. Kremers ◽  
H. Willruth ◽  
A. Mehl ◽  
G. Welzl ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Urinary Excretion ◽  
Total Mercury ◽  
Excretion Rate ◽  
Absorbed Dose ◽  
Correlation Coefficients ◽  
Urinary Excretion Rate ◽  
Amalgam Fillings

The number of amalgam-covered surfaces and the occlusal area of the fillings, the concentrations of total mercury in plasma, erythrocytes and urine, the urinary excretion rate, and the absorbed daily doses estimated by two separate methods from intra-oral Hg emission were determined in 29 volunteers with a low amalgam load. The transfer ofHg from the fillings via the oral cavity and blood to urinary excretion was evaluated by multiple correla tions between these variables. In addition, the combina tion of variables most representative of the entire compartmental transfer of amalgam Hg was determined. Urinary excretion (1), Hg concentration in plasma (2) and absorbed dose (3) were most closely correlated to each other, followed by correlations with the variables of the fillings (4). Correlation coefficients were 0.75 for variables 1 vs 2 and 2 vs 3, and 0.49 for variables 3 vs 4. It was concluded that variables 1-3 best reflected the transfer of mercury from amalgam fillings throughout the organism and that they were relatively insensitive to dietary mercury. The determination of total mercury in plasma and of its urinary excretion rate appears, under practical aspects, most suitable for the investigation of Hg uptake from amalgam.

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