Correction of instrumental distortion by analytical deconvolution of data

1979 ◽  
Vol 70 (5) ◽  
pp. 2450-2454 ◽  
Author(s):  
D. C. Morton ◽  
Grayson H. Rayborn
1967 ◽  
Vol 45 (8) ◽  
pp. 2621-2637 ◽  
Author(s):  
J. J. H. Park ◽  
P. Christmas

The continuous beta spectrum and the K Auger-line spectrum in the decay of 204Tl were investigated using a high-resolution, iron-free, [Formula: see text] double-focusing spectrometer. Instrumental distortion of the beta spectrum was shown to be very small and a linear Fermi–Kurie plot was obtained using the generalized unique first forbidden shape factor bq2 + λ2p2, with b = 1.161 ± 0.005. The end-point energy was determined to be (763.24 ± 0.31) keV. Measured values for the energies and relative intensities of the K Auger lines were in broad agreement both with theory and with previous experimental work. The K fluorescence yield was estimated to be 0.97 ± 0.017.


The method used in these investigations is that which was described in papers communicated to the Royal Society in 1911 and 1912. The ionising rays are made to pass through moist air, or other gas, in which the water-vapour has been brought into the super-saturated state by sudden expansion of the gas. Each ion liberated becomes at once the nucleus for the condensation of a visible droplet of water; the clouds of drops thus formed are immediately photographed. Very sharply defined pictures of the tracks of ionising particles—α- or β-rays—may be obtained in this way. When the conditions are suitably arranged, the effects of diffusion of the ions before their mobility has been destroyed by condensation of water upon them, as well as that of subsequent disturbance of the cloud tracks by convection currents in the gas, are negligible: photographs of the path of the ionising particles, practically free from distortion, are obtained. The almost perfect straightness of the track of a very fast β-particle, when it occurs among a crowd of tracks of slower β-particles, gives very convincing evidence that the complicated forms of the latter are not due to instrumental distortion.


2006 ◽  
Vol 385-386 ◽  
pp. 1200-1202 ◽  
Author(s):  
Márton Markó ◽  
László Cser ◽  
Gerhard Krexner ◽  
Ivan Sharkov

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