1 / 6

Importance of X-ray Measurements in 186Re Decay Scheme Analysis

Understanding the significance of X-ray intensity measurements and electron capture probabilities in 186Re decay scheme analysis. Detailed explanation of measured values and their impact on activity measurement.

gretel
Télécharger la présentation

Importance of X-ray Measurements in 186Re Decay Scheme Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 186Re : importance of X-ray measurements M.M. Bé mmbe@cea.fr

  2. Simplified Decay Scheme 186Re EC1 1 122 keV 137 keV g122 EC0 g137 186W 0 186Os XK XK

  3. Available measured values Following the beta minus transition P1: Following the Electron Capture EC1: Absolute values : Absolute values : P+ce = (1+T)  I 137 = P1= 21,68 (38) % P+ce = (1+T)  I122 = PEC1= 1,694 (25) %

  4. Decay Scheme 186Re EC1 1 122 keV 137 keV g122 EC0 g137 186W 0 186Os XK P122 P137 P122 + P137 + PEC0 + P0= 100

  5. X-ray intensity measurements • We have : • Two measured values of the W K X-ray intensity given relatively to the Ig137 line • And one absolute value • Then using the formula : • I(W KX) = With I(W KX) = 6,02 (8)% (Schönfeld, 1994) PEC1 = 1,694 (25) % PK, K, T from Tables K = 0,954 (4) PEC0 = 5,83 (11) %  P0 = 70,86 (40) %

  6. X-ray intensity influence The difference between the higher and the lower value is 0.5 %, it can be noted that these values of the electron capture probabilities are of importance for some users of the decay scheme data, for example when activity measurement of a solution is made by the mean of liquid scintillation counting because the electron capture decay events are more susceptible to ionization quenching effects. This is to point out this influence and importance of some values in the result of activity measurement.

More Related